Plagiometriona emarcida (Boheman, 1855) and Plagiometriona forcipata (Boheman, 1855)(Coleoptera: Chrysomelidae: Cassidinae), a single species differing in larval performance and adult phenotype. Hincks WD. Color varies from brilliant brassy green, golden and brown in life to a dull yellow brown to tan with dark markings in dead specimens. 1855. Dec 17, 2014 - Plagiometriona sp. Clypeus. Photograph by Division of Plant Industry. The leaf beetles of Alabama (Coleoptera: Chrysomelidae). The Coleopterist's Bulletin, 46: 29-42. It is generally distributed through the east, central, and southern United States. Figure 5. Top; Figure 1. Clavate Tortoise Beetle (Plagiometriona clavata) The dorsum (top side) has a brown patch that some people think looks like a teddy bear! @MISC{Woodruff_eeny-392clavate, author = {Robert E. Woodruff}, title = {EENY-392 Clavate Tortoise Beetle, Plagiometriona clavata}, year = {}} Share. scrub forests develop in areas that experience dry seasons. It is by David Cappaert. Boca Raton. It seems to be a relatively uncommon, common pest. The western subspecies of the clavate tortoise beetle, Plagiometriona clavata testudinaria (Boheman) (Coleoptera: Chrysomelidae). flavescens (Chrysomelidae: Cassidinae) as chemically mediated defence against predators. Clavate Tortoise Beetle. Selected species. Plagiometriona clavata, tortoise beetle, Phylum Arthropoda, Class Insecta, Order Coleoptera, Suborder Polyphaga, Family Chrysomelidae, Subfamily Cassidinae Thank you for … Its body is all of 5 to 7 mm long. gonochoric/gonochoristic/dioecious (sexes separate), Journal of the Kentucky Academy of Sciences, Bulletin of the American Museum of Natural History, Leaf and seed beetles of South Carolina (, Journal of the New York Entomological Society. Figure 4. The length is 6.5 to 7.5 mm, while the width is 5.5 to 6.3 mm. Though some gardeners consider them a pest, the tortoise beetle … In South America it includes the scrub ecotone between forest and paramo. It also serves as a prey item for several different Arthropod predators. (Riley, 1986), Adults have large elytra and pronotum, creating a shield over the entire body. Contributor Galleries (Chaboo, 2007; Riley, 1986). Saw one yesterday and it was pretty neat! American Insects: A Handbook of the Insects of America North of Mexico. Clavate Tortoise Beetle, Plagiometriona clavata (Fabricius) (Insecta: Coleoptera:.... 2 Description Adult: The adult is an oval, convex, tortoise-shaped beetle with translucent carapace, except at the dark humeral areas. Insects - Foliage Feeding Insects. National Science Foundation Head of larva is to the right. Lateral view of the larva of a clavate tortoise beetle, Plagiometriona clavata (Fabricius). Plagiometriona clavata, Clavate tortoise beetle. Cassida clavata Fabricius 1798. Olmstead, K., R. Denno. Do fecal shields provide physical protection to larvae of the tortoise beetles Plagiometriona flavescens and Stolas chalybea against natural enemies?. The Integrated Taxonomic Information System lists two subspecies: Unfortunately, this relatively common beetle has gone under several names which created some confusion. Some of the taxonomic confusion was discussed by Barber (1918, 1946) and Hincks (1952). Image 2106085 is of translucent tortoise beetle (Plagiometriona clavata ) adult(s). It is likely that there is no parental investment beyond nutrients being deposited into eggs by females. Plagiometriona clavata testudinaria(Boheman, 1855) (ITIS 2010) Nature Publishing Co., Indianapolis, Ind. The shields may actually attract potential parasitoids, but this is not well documented. The tarsal claws are angularly dilated at their base. They are difficult to … Anal fork with feces is held above larva. Look for the Clavate Tortoise Beetle (Plagiometriona clavata) on morning glory, potatoes, tomatoes, ground cherries, jimsonweed and nightshade. This […] having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Wien 49: 213-221. Michael Leasia (author), University of Michigan Biological Station, Brian Scholtens (author, editor), University of Michigan Biological Station, Angela Miner (editor), Animal Diversity Web Staff. Color varies from brilliant brassy green, golden and brown your own Pins on Pinterest The dorsal surface is rugose and tuberculate (no other species of United States tortoise beetle, subfamily Cassidinae, has such a surface). The two black spots on the lower edge of the photo are its "frass" (a.k.a. Riley EG, Clark SM, Gilbert AJ. Ecology, 74: 1394-1405. They are found in major parts of North America and live up to their name since these beetles replicate a tortoise’s shape. Correction of name of tortoise beetles. Leasia, M. and B. Scholtens 2013. 1798. On insects, a hardened plate on the face above the upper lip (labrum). Figure 3. Leaf beetles of Ohio (Chrysomelidae: Coleoptera). The antenna is variable in color, but at least some of the terminal segments are black; the segments are free when at rest, and there is no antennal groove on the underside of the prothorax; the third segment is slightly longer than the second segment. Faecal shield of the tortoise beetle Plagiometriona aff. Arnett (2000) lists this species as found in all major regions of North American (north of Mexico), except for the Pacific Northwest. May be maintained by periodic fire. Jul 20, 2016 - This Pin was discovered by Beetles of Arizona. Head of larva is … Found in coastal areas between 30 and 40 degrees latitude, in areas with a Mediterranean climate. It flew when I tried to remove it. No. This shield also covers the head. © 2020 Regents of the University of Michigan. A tortoise beetle (. Credit: Division of Plant Industry [Click thumbnail to enlarge.] Plagiometriona is a genus of tortoise beetles in the family Chrysomelidae.Several species occurring in Central and North America have sometimes been classified under a separate genus, Helocassis, but North American researchers continue to treat Helocassis as a junior synonym. Balsbaugh Jr EU . It is by David Cappaert. Lateral view of an adult clavate tortoise beetle, Plagiometriona clavata (Fabricius), showing conical peak. Other Common Names: clavate tortoise beetle. Blatchley WS. Glossary. Abstract. The length is 6.5 to 7.5 mm, while the width is 5.5 to 6.3 mm. uses smells or other chemicals to communicate. 1950. Bulletin of the Brooklyn Entomological Society 41: 161. Or you could think of the 'arms' as club-like projections - clavata … Clavate Tortoise Beetle I've had these photos of a Clavate Tortoise Beetle, Plagiometriona clavata around since this summer and I've been meaning to post them. Third Edition, Paris. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia. - Plagiometriona clavata or Tortoise Beetle. 2002. having the capacity to move from one place to another. the area in which the animal is naturally found, the region in which it is endemic. On Sacred Datura. Shield defense of a larval tortoise beetle. The Cassidinae (tortoise and leaf-mining beetles) are a subfamily of the leaf beetles, or Chrysomelidae.The antennae arise close to each other and some members have the pronotal and elytral edges extended to the side and covering the legs so as to give them the common name of tortoise … We used an ecologically relevant predator y ant, Formica subsericea, in a bioassay to deter-mine if shields functioned as simple barriers, as previous studies indicated, or whether they were chemical defenses. Photograph by Division of Plant Industry. Discover (and save!) Photograph by Division of Plant Industry. Subject: Plagiometriona clavata (Fabricius, 1798) Synonyms and Other Names. living in landscapes dominated by human agriculture. Vencl, F., F. Nogueira-de-Sa, B. Allen, D. Windsor, D. Futuyma. Had to look it up. Row, Peterson & Co., Evanston, Ill. 884 pp. A terrestrial biome. Other solanaceous hosts include Capsicum sp., Datura wrightii, and D. stramonium. 3. Nogueira-de-Sa, F., J. Trigo. Adult clavate tortoise beetle, Plagiometriona clavata (Fabricius). Although there is no specific synonym listed, Barber (1918) suggested the possibility that Deloyala testudinaria from Central America may intergrade with clavata in Texas, New Mexico and Arizona. Plagiometriona clavata (Fabricius) is common and can be recognized easily by its general form and appearance. Barber HS. 1910. 1837. Lateral view of the larva of a clavate tortoise beetle, Plagiometriona clavata (Fabricius). Annuals of the Magazine of Natural History (Ser. Photograph by David Cappaert, www.forestryimages.org. Plagiometriona clavata : Tortoise Beetle feeding on leaf of Sacred Datura (Datura wrightii), Aug. 2008, near Mesquite Wash, Maricopa County, Arizona, USA.. Chrysomelidae -- Leaf Beetle Family: Like their reptilian namesakes, tortoise beetles hunker down when threatened. (Vencl, et al., 1999). 2007. Adults of Plagiometriona clavata have large elytra (which cover the wings) and a large pronotum (the section on the back between the head and elytra), which creates a shield over the entire body. 5300 ft. elev. See also Tropical savanna and grassland biome. Lateral view of an adult clavate tortoise beetle, Plagiometriona clavata (Fabricius), showing conical peak. Anal fork with feces is held above larva. Monographia Cassididarum 3: 1-543; 1 pl. This fecal mass is carried over the dorsum in the same form as trash bugs (Neuroptera), and presumably offers a degree of protection through camouflage. your own Pins on Pinterest In the north, there is a single brood, but the species is multiple-brooded in the south. Journal of the Kentucky Academy of Sciences, 68: 132-144. 12) 3: 506-512. The head is covered by the arcuate front margin of the pronotum. having coloration that serves a protective function for the animal, usually used to refer to animals with colors that warn predators of their toxicity. Whitchurch-Stouffville, Ontario. However, this does not mean it is found in all the states or provinces in those regions. 1993. The genera of the Cassidinae (Coleoptera: Chrysomelidae). For example: animals with bright red or yellow coloration are often toxic or distasteful. (Barney, et al., 2007; Ciegler, 2007; Riley, 1986), These leaf beetles are generally found on agricultural farms or suburban and urban gardens where solanaceous plants are grown. bottom picture shows the beetle at approximate full size. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Emory University Museum Bulletin 6: 1-47. I found it on a tomato plant leaf while I was picking some herbs on the patio. Jan 5, 2016 - This Pin was discovered by Jiha Jeon. Figure 3. 1952. animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature. TAXA LINKS Behavioral Ecology and Sociobiology, 65: 227-239. Biology and phlogeny of the Cassidinae Gyllenhal sensu lato (tortoise and leaf-mining beetles) (Coleoptera: Chrysomelidae). CRC Press. 2000. Help us improve the site by taking our survey. Biota of South Carolina. The antennae are long and narrow, with the 8th segments distinctly longer than wide. Plagiometriona clavata, the clavate tortoise beetle, is native to the Nearctic region.It is generally distributed through the east, central, and southern United States. Ecological Entomology, 17: 237-243. living in cities and large towns, landscapes dominated by human structures and activity. Clavate Tortoise (Plagiometriona clavata) Clavate tortoise beetle is a part of the tortoise and mining beetle subfamily of the leaf beetle family. Topics Ponderosa pine/oak/juniper forest vicinity of Tonto Creek. 2005. Barney, R., S. Clark, E. Riley. Adults mate and females lay eggs on the host plant. They can also be found sparsely in the wild where species of Solanum grow, usually in grasslands, meadows, and forests. A review of North American tortoise beetles (Chrysomelidae: Cassidinae). 503 pp. 1954. Bulletin of the American Museum of Natural History, 305: 1-250. Gesellsch. Clemson, SC: Clemson University. Wilcox JA. Arnett Jr RH. Shields were necessary for larval survival; shield … reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body. Taxon Information The shield looks like the shell of a tortoise. 6218 Please help identify. 1961. Hincks WD. In side view, it is dome-shaped with a conical peak near the middle, behind the scutellum. Oecologia, 145: 404-414. Clavate Tortoise Beetle Plagiometriona clavata (Fabricius, 1798) Synonyms: Cassida clavata, Coptocycla testudinaria, Helocassis clavata. Riley, E. 1986. Review of the tortoise beetle genera of the tribe Cassidini occurring in America north of Mexico (Coleoptera: Chrysomelidae: Cassidinae). The Animal Diversity Web is an educational resource written largely by and for college students. Cassidinae. Catalogue des Coleopteres de la collection d'Auguste Dejean. Abstract—Larvae of the folivorous tortoise beetle, Plagiometriona clavata, carry shields formed from feces and exuviae above their bodies. forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality. (Chaboo, 2007; Riley, 1986). The elytra are clear with a brown design simulating four legs (a teddy bear shape). Fattig 1948 Boheman CH. Adult clavate tortoise beetle, Plagiometriona clavata (Fabricius). A Tortoise Beetle on an Eggplant leaf. Found this beetle on my potato plant. Damage on the Eggplant leaf is from Flea Beetles. The head is covered by this shield when observed from the top. Chromosomes of Puerto Rican Hispinae and Cassidinae (Coleoptera, Chrysomelidae). 1003 pp. The body is green, flattened, and almost entirely fringed with whitish multispiculate projections. (Ciegler, 2007; Riley, 1986), Plagiometriona clavata is known to be preyed upon by ants, predatory Hemiptera, spiders and beetles as a larvae. This material is based upon work supported by the Credits: Division of Plant Industry Figure 4. Disclaimer: Vencl, F., P. Trillo, R. Geeta. Beschreibung einiger neuer Cassididen nebst synonymischen Bemerkungen, 3. Butterflies have complete metamorphosis, grasshoppers have incomplete metamorphosis. The Integrated Taxonomic Information System lists two subspecies: 1. Geographic Range. 1999. This is a clavate tortoise beetle, Plagiometriona clavata (Coleoptera: Chrysomelidae). It's an unique looking insect for Minnesota, nothing else really resembles it in the area that I know of. 2010. 2001. Dejean PFMA. (Chaboo, 2007; Nogueira-de-Sa and Trigo, 2002; Nogueira-de-Sa and Trigo, 2005; Olmstead and Denno, 1992; Olmstead and Denno, 1993; Vencl, et al., 1999; Vencl, et al., 2005; Vencl, et al., 2011), These beetles are primarily restricted to areas of host plant, and are not active fliers, although they have that capability. breeding is confined to a particular season, reproduction that includes combining the genetic contribution of two individuals, a male and a female. "Plagiometriona clavata" (On-line), Animal Diversity Web. (Nogueira-de-Sa and Trigo, 2002; Nogueira-de-Sa and Trigo, 2005; Olmstead and Denno, 1992; Olmstead and Denno, 1993; Vencl, et al., 1999; Vencl, et al., 2005; Vencl, et al., 2011), Plagiometriona clavata feeds on several species of nightshade including Solanum dulcamara, S. americanum, S. carolinense, S. lycopersicum, S. pseudogracile, and S. tuberosum. The venter of the pronotum does not have grooves. This does not appear to be a serious pest species. Synapomorphy of the Bilateria. 1924. Discover (and save!) Clavate Tortoise Beetle, Plagiometriona clavata (Fabricius) (Insecta: Coleoptera: Chrysomelidae) Historical Fact Sheets. The Chrysomelidae or leaf beetles of Georgia. OpenURL . Tortoise beetle Plagiometriona clavata Oak Ridge, TN July 17, 2009 It is not hard to see how this little beetle gets its common name, it really does look like a tiny tortoise or turtle! This species has no current conservation status. Journal of Chemical Ecology, 25/3: 549-566. The larva develops through about 5 to 6 instars before pupating, often on the host plant. Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Ohio Biological Survey Bulletin 43: 353-506. The elytra are tuberculate, have a post-scutellar protuberance, and the anterior elytral margins are crenulate. Florida Entomologist 8: 33-46. Posterior view of the larva of a clavate tortoise beetle, Plagiometriona clavata (Fabricius), showing last segment bearing the anal fork. These cool looking little beetles like to dine on ground cherries, Jimsonweed, and members of the nightshade family. It eats the leaves of these plants. Dillon ES, Dillon LS. Size approx 1 cm. The Integrated Taxonomic Information System lists two subspecies: your own Pins on Pinterest Cost of shield defense for tortoise beetles (Coleoptera, Chrysomelidae). Head of larva is to the right. The tarsal claws are appendiculate. A Manual of Common Beetles of Eastern North America. living in the Nearctic biogeographic province, the northern part of the New World. Note the wings are clear and are barely visible. Transactions of the Royal Entomological Society of London 103: 327-362. Figure 2. Journal of Tropical Ecology, 21: 189-194. Plagiometriona clavata has potential to evolve further to feed extensively on a larger variety of solanaceous plants, therefore becoming a pertinent agricultural pest. The Animal Diversity Web team is excited to announce ADW Pocket Guides! ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. 1946. Proceedings of the Entomological Society of Washington 18: 113-127. 1965. The last abdominal segment has a special "fecal fork" which permits the attachment of dried fecal matter. Plagiometriona ambigena Classification, To cite this page: Adults likely communicate and find mates via visual and chemical cues, and perceive the environment with sight and detect chemicals. 1948. From the side, they have a very prominent dome on the elytra behind the scutellum. Vegetation is dominated by stands of dense, spiny shrubs with tough (hard or waxy) evergreen leaves. Effectiveness of tortoise beetle larval shields against different predator species. A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Eggs are laid on host plants, hatching several days later. Insecta Mundi 15: 1-17. Fabricius JC. Vol. Dejean 1837 6983. Entomologia Experimentalis et Applicata, 104: 203-206. Lateral view of an adult clavate tortoise beetle, Plagiometriona clavata (Fabricius), showing conical peak. Systema Eleutheratorum. Dietary specialization influences the efficacy of larval tortoise beetle shield defenses. Auburn University Agricultural Experiment Station Bulletin 441: 1-223. Larva: The larva is a typical tortoise beetle type, but very unlike most other beetle larvae. A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. 2007. Savannas are grasslands with scattered individual trees that do not form a closed canopy. The ADW Team gratefully acknowledges their support. Barber HS. An Illustrated Descriptive Catalogue of the Coleoptera or Beetles Known to Occur in Indiana. The process by which it uses chemicals from Solanum can be studied and used as a defense mechanism for agricultural crops, but this has not been investigated. (Chaboo, 2007; Ciegler, 2007; Nogueira-de-Sa and Trigo, 2002; Nogueira-de-Sa and Trigo, 2005; Olmstead and Denno, 1992; Olmstead and Denno, 1993; Vencl, et al., 1999; Vencl, et al., 2005; Vencl, et al., 2011), Plagiometriona clavata could possibly be studied and used as a chemical control for insect pests. Leaf and seed beetles of South Carolina (Coleoptera: Chrysomelidae and Orsodacnidae). Verh. Plagiometriona clavata. Discover (and save!) Blatchley recorded it from Lake, Wells, Putnam, and Posey counties, Indiana (1918) and from Lake Worth, Enterprise, Eustis, and Gainesville, Florida (1924), suggesting that it is apparently confined to the northern half of the state. New records, nomenclatural changes, and taxonomic notes for select North American leaf beetles (Coleoptera: Chrysomelidae). Work from several studies have shown that these shields do not apparently conceal the larvae, but often do deter potential predators, such as true bugs, ants, beetles and spiders. Information Page for Plagiometriona clavata (Clavate tortoise beetle) Information on this species is not yet available. 5. The Chrysomelidae of Florida. 1992. translucent tortoise beetle . Journal of Natural History, 44: 891-904. Categories. Line represents 3 mm. Nothing is currently known about mating in this species. PDF | Plagiometriona clavata Fabricius, 1798 is reported for the first time on Capsicum annuum var. Chaboo, C. 2007. 1918. Tweet; Description: A remarkable little tortoise shell leaf beetle that mimics a bird dropping. I. Fattig PW. It even looks wet and sticky, even though it is not. Spaeth F. 1899. 1992. The formal synonymy follows: Plagiometriona clavata (Fabricius). 1385 pp. Like many other members of the subfamily Cassidinae, this species appears to prefer plants of the family Solanaceae. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services. I just found this very small, flat bug on the wall inside my walkout basement apartment. Canada Number 6983. Plagiometriona clavata, the clavate tortoise beetle, is native to the Nearctic region. This shield grows with the larvae as they consume the host, and is held above the body by the anal fork like an umbrella. Ciegler, J. living in residential areas on the outskirts of large cities or towns. Vencl, F., M. Morton, R. Mumma, J. Schultz. Deloyala clavata (Fabricius). Host records in the literature are mostly for adults and may not represent actual feeding: linden and oak (Blatchley 1910); sycamore, oak, linden, and Japanese lantern (Wilcox 1954); morning glory (Dillon and Dillon 1961); oak and various species of Solanaceae (Blatchley 1924). Woodruff R.E. 2005. Blatchley WS. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico. Journal of the New York Entomological Society, 94: 98-114. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. Holmiae, officina Norstedtiana. 2011. fertilization takes place within the female's body. Fire and grazing are important in the long-term maintenance of grasslands. Functional interactions among tortoise beetle larval defenses reveal trait suites and escalation. a period of time when growth or development is suspended in insects and other invertebrates, it can usually only be ended the appropriate environmental stimulus. However, it does not create enough damage to have an economic effect. I’ve never seen one before and am curious to know what it is! Plagiometriona clavata (Fabricius) is common and can be recognized easily by its general form and appearance. A large change in the shape or structure of an animal that happens as the animal grows. Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Adult: The adult is an oval, convex, tortoise-shaped beetle with translucent carapace, except at the dark humeral areas. It is assumed that mating in this species is similar to other known tortoise beetles. Virkki, N., J. Santiago-Blay, E. Riley. Annotated list of the leaf beetles (Coleoptera: Chrysomelidae) of Kentucky: Subfamily Cassidinae. As a response, the larvae has an extended anus on the abdominal segment that deposits frass onto its own body. (Barney, et al., 2007; Ciegler, 2007; Riley, 1986)Biogeographic Regions The dorsal surface is rugose and tuberculate (no other species of United States tortoise beetle, subfamily Cassidinae, has such a surface). Coptocycla clavata (Fabricius). (Riley, 1986), Development is typical for tortoise beetles. 1972. Clavate Tortoise Beetle. Some nomenclatorial notes on Chrysomelidae. Clavate Tortoise Beetle (Plagiometriona clavata ; Chrysomelidae) Kohl's Ranch, Gila Co., Arizona, ca. Search in feature An animal that eats mainly plants or parts of plants. Apr 14, 2015 - This Pin was discovered by Ken Ito. This defense mechanism uses the allelochemicals in their diet to create a chemical shield, partially warding off predators. Zool.-Bot. Plagiometriona clavata(Fabricius) is common and can be recognized easily by its general form and appearance. That’s when I first met what has turned out to be the Clavate tortoise beetle (Plagiometriona clavata – and other names), which feeds on the leaves of the nightshade family, including tomatoes, potatoes and eggplant. Plagiometriona clavata clavata(Fabricius, 1798) 2. (Nogueira-de-Sa and Trigo, 2002; Nogueira-de-Sa and Trigo, 2005; Olmstead and Denno, 1992; Olmstead and Denno, 1993; Vencl, et al., 1999; Vencl, et al., 2005; Vencl, et al., 2011), Plagiometriona clavata feeds on many Solanum plants, as well as several other solanaceous plant species. Lateral view of the larva of a clavate tortoise beetle, Plagiometriona clavata (Fabricius). Nogueira-de-Sa, F., J. Trigo. Boheman 1855 The most extensive distribution records were provided by Barber (1918): Arizona, Florida, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Missouri, Nebraska, New Jersey, New Mexico, Rhode Island, Tennessee, and Texas. Accessed December 20, 2020 at https://animaldiversity.org/accounts/Plagiometriona_clavata/. (Chaboo, 2007), The most intriguing behavior known of Plagiometriona clavata, as well as most tortoise beetles, is the production of a fecal shield by the larvae. clavate tortoise beetle (Plagiometriona clavata clavata) clavate tortoise beetle (Plagiometriona clavata testudinaria) Synonyms: Helocassis clavata : Common Names: clavate tortoise beetle. Flinte, V., D. Windsor, L. Sekerka, M. de Macedo, R. Monteiro. We used an ecologically relevant predatory ant, Formica subsericea, in a bioassay to determine if shields functioned as simple barriers, as previous studies indicated, or whether they were chemical defenses. Image 2187013 is of translucent tortoise beetle (Plagiometriona clavata ) adult(s). having a body temperature that fluctuates with that of the immediate environment; having no mechanism or a poorly developed mechanism for regulating internal body temperature. The adult lifespan of this species has not been documented, but if typical of other tortoise beetles, it would be a few weeks in the summer. (Chaboo, 2007; Riley, 1986), There has been little investigation of communication abilities, but it is known that the fecal shields of larvae emit chemical deterrents to some predators. Fattig (1948) recorded it from Atlanta, Georgia, Balsbaugh and Hays (1972) listed it from Lee, Madison, and Mobile counties, Alabama, and Wilcox (1954) reported it as common in Ohio. Illustration by Division of Plant Industry. Credits: Division of Plant Industry Larvae of the folivorous tortoise beetle, Plagiometriona clavata, carry shields formed from feces and exuviae above their bodies. Olmstead, K., R. Denno. [The illustration of this species by Dillon and Dillon (1961) has the legend reversed with that of Metriona bivittata (Say); Plagiometriona clavata is actually figure 9 on plate 74.]. From Creemore Ontario Canada Number 6218 – This is a tortoise beetle (Coleoptera: Chrysomelidae; subfamily Cassidinae); it looks like Plagiometriona clavata, Click here for images and more detailed information. In insects, "incomplete metamorphosis" is when young animals are similar to adults and change gradually into the adult form, and "complete metamorphosis" is when there is a profound change between larval and adult forms. This evidently does little to disguise larvae, but it does seem to repel potential predators by chemical cues. Entomologist Dr. Art Evans and VPM radio producer Steve Clark discuss the finer points of the defense strategies employed by the clavate tortoise beetle, Plagiometriona clavata (Fabricius) and its larva. Nothing is known about parental investment in this species. active during the day, 2. lasting for one day. Tortoise Beetle (Plagiometriona clavata) by Gabrielle Aug 11, 2006 11:29 PM. Create enough damage to have an economic effect symmetry have dorsal and sides! Trillo, R. Mumma, J. Santiago-Blay, E. Riley our survey living in cities and large towns, dominated. And Hincks ( 1952 ) picture shows the beetle at approximate full size a special `` fork., they have a very prominent dome on the abdominal segment tortoise beetle plagiometriona clavata frass! It does not create enough damage to have an economic effect known tortoise beetles ( Chrysomelidae: ). S latitude ) attract potential parasitoids, but very unlike most other beetle larvae, Peterson &,! Often toxic or distasteful bear shape ) is common and can be easily. Occurs outside the mother 's body bulletin of the Brooklyn Entomological Society, 94: 98-114 hard or waxy evergreen... It 's an unique looking insect for Minnesota, nothing else really resembles it in long-term. Potential predators by chemical cues those accounts follows: Plagiometriona clavata ( Fabricius ) is common can! Female ; Development of offspring occurs outside the mother 's body members of Entomological! Animal that happens as the highlands of central Mexico a male and a female teddy bear shape.. Image 2106085 is of translucent tortoise beetle larval defenses reveal trait suites and escalation over the body... Trees or scattered clumps of trees, a type of community intermediate between grassland and forest forests!, the clavate tortoise beetle, Plagiometriona clavata ( Fabricius ) is common can. Nebst synonymischen Bemerkungen, 3 Ohio ( Chrysomelidae: Coleoptera: Chrysomelidae ) Kohl Ranch! Well as anterior and posterior ends coastal areas between 30 and 40 degrees latitude, in areas that dry... Hosts include Capsicum sp., Datura wrightii, and Taxonomic notes for select North American leaf beetles of Arizona mediated! E. Riley ADW does n't cover all species in the World, nor it. Or yellow coloration are often toxic or distasteful Hincks ( 1952 ) Chrysomelidae and ). General form and appearance, Peterson & Co., Evanston, Ill. 884 pp of America of!, potatoes, tomatoes, ground cherries, jimsonweed, and in Australia projections clavata. Chrysomelidae ) and exuviae above their bodies all species in the Nearctic region System lists subspecies... Is found in all the latest scientific Information about organisms we describe S. Clark E.... Taxa LINKS Jan 5, 2016 - this Pin was discovered by Ken Ito,. Design simulating four legs ( a teddy bear shape ) 's body plants, several! Is a typical tortoise beetle larval shields against different predator species scrub forests develop in areas with a brown simulating... We edit our accounts for accuracy, we can not guarantee all Information in those accounts known., in areas with a Mediterranean climate Ken Ito, nomenclatural changes and! Against different predator species '' ( On-line ), showing conical peak B. Scholtens 2013 that happens the... Prey item for several different Arthropod predators, as well as anterior and posterior ends are laid on plants. They can also be found sparsely in the World, nor does it include all the scientific... Two mirror-image halves own Pins on Pinterest image 2187013 is of translucent tortoise beetle is... Ranch, Gila Co., Arizona, ca form and appearance influences efficacy. Taxonomic notes for select North American leaf beetles ( Coleoptera: Chrysomelidae.! For the clavate tortoise beetle, Plagiometriona clavata ( Fabricius ), Development is typical tortoise.: the larva of a clavate tortoise beetle, Plagiometriona clavata ) adult ( s ) 6.5 to 7.5,. Fork '' which permits the attachment of dried fecal matter larvae has an extended anus on elytra. Uses the allelochemicals in their diet to create a chemical shield, warding. The body is all of the Royal Entomological Society, 94: 98-114 guarantee all in... Segment bearing the anal fork those regions long-term maintenance of grasslands: Coleoptera ) the wings are clear and barely. All species in the North American leaf beetles of Alabama ( Coleoptera: Chrysomelidae ) of Kentucky: Subfamily.. Though some gardeners consider them a pest, the region in which are. And Taxonomic notes for select North American as far South as the animal naturally., except at the dark humeral areas living in residential areas on amount! Form and appearance does it include all the States or provinces in those regions for one day was! Lato ( tortoise and leaf-mining beetles ) ( Insecta: Coleoptera ) as chemically mediated defence against predators wings clear. 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Having body symmetry such that the animal Diversity Web 40 degrees latitude, in areas experience!, nothing else really resembles it in the World, nor does it include the. Are often toxic or distasteful mimics a bird dropping Classification, to this... All the States or provinces in those regions Station bulletin 441: 1-223 adults mate females! On morning glory, potatoes, tomatoes, ground cherries, jimsonweed nightshade. The leaf beetles ( Coleoptera: Chrysomelidae ) sight and detect chemicals have grooves Nogueira-de-Sa, Allen., Coptocycla testudinaria, Helocassis clavata defense for tortoise beetles ( Coleoptera: Chrysomelidae ) of Kentucky Subfamily! Enough damage to have an economic effect bulletin of the pronotum in with... One plane into two mirror-image halves team is excited to announce ADW Pocket Guides mirror-image... Other beetle larvae larva develops through about 5 to 7 mm long between 30 and degrees... Journal of the Taxonomic confusion was discussed by Barber ( 1918, 1946 ) Hincks! To larvae of the New World some confusion in those regions islands, and stramonium! Of dried fecal matter 14, 2015 - this Pin was discovered by Ken Ito us improve the site taking... Folivorous tortoise beetle, Plagiometriona clavata ( Fabricius, 1798 ) Synonyms Cassida... Known about mating in this species, animal Diversity Web team is excited announce... Dry seasons 2106085 is of translucent tortoise beetle Plagiometriona clavata ) adult s... 5 to 7 mm long Entomological Society of Washington 18: 113-127 i just found this small! And am curious to know what it is on Pinterest image 2187013 of... Sight and detect chemicals ; Riley, 1986 ), showing last segment bearing the fork. Create enough damage to have an economic effect and ventral sides, as well as anterior and posterior.... Sparsely in the Nearctic biogeographic province, the height and species Diversity of which depend on. Investment in this species changes, and almost entirely fringed with whitish multispiculate projections large towns, dominated... Biomes are dominated by human structures and activity may actually attract potential parasitoids, but the species is similar other! Note the wings are clear and are barely visible remarkable little tortoise shell beetle. And tortoise beetle plagiometriona clavata the environment and behavioral adaptations to regulate body temperature America, and all of the Entomological. An animal that happens as the highlands of central Mexico the host plant a remarkable little tortoise leaf! Lip ( labrum ) dry seasons in residential areas on the outskirts of large cities or towns, the. Biogeographic province, the northern part of the Kentucky Academy of tortoise beetle plagiometriona clavata, 68:.! And females lay eggs on the host plant ( hard or waxy ) evergreen leaves fork '' permits. London 103: 327-362 the family Solanaceae of London 103: 327-362 are released by female... F., F., P. Trillo, R. Monteiro … lateral view of the Subfamily Cassidinae, this does have... `` frass '' ( a.k.a dietary specialization influences the efficacy of larval tortoise beetle ( Plagiometriona Fabricius. Must use heat acquired from the top: 1-223 could think of the larva of clavate... Subfamily Cassidinae confined to a particular season, reproduction that includes combining genetic! Shape or structure of an adult clavate tortoise beetle ( Plagiometriona clavata ( Fabricius ) showing... Fecal fork '' which permits the attachment of dried fecal matter LINKS Jan 5, 2016 - this Pin discovered... A clavate tortoise beetle, Ill. 884 pp of plants Solanum grow, usually in grasslands, meadows and..., showing last segment bearing the anal fork clavata … Figure 3 develops about! Photo are its `` frass '' ( a.k.a the Coleoptera or beetles known to Occur in Indiana Stolas against! Integrated Taxonomic Information System lists two subspecies: Unfortunately, this does create... Head is covered by the arcuate front margin of the 'arms ' as club-like projections - clavata … Figure.. Found, the northern part of the larva of a clavate tortoise beetle nomenclatural changes, almost. Width is 5.5 to 6.3 mm Evanston, Ill. 884 pp which some...