Laboratory techniques for screening cowpeas for resistance to Callosobruchus maculatus F. Environmental Entomology 4: 415â419. Larvae typically develop inside the dried peas. Typical of the bean weevils the elytra are short and leave the last few segments of the abdomen exposed from above. For additional information, contact your local Texas A&M AgriLife Extension Service agent or search for other state Extension offices. All transactions involving this Product(s) are subject to ES OpCo USA LLC Standard Terms and Conditions, available at https://www.veseris.com/sales-terms or upon request. The larva is whitish and somewhat C-shaped with a small head. Gustafsson, B. Our website has detected that you are using an outdated insecure browser that will prevent you from using the site. Professor Shalom Applebaum This last abdominal segment also has two black spots visible. 1962; Swan & Papp 1972. Literature: Ebling 1978; Metcalf et al. Scientific Name: Callosobruchus maculatus (Fabricius) These spines do not increase reproductive success for either sex, and their evolutionary significance is not clear. Common Name: Cowpea weevils A complete life cycle takes 4-5 weeks and there may be 6-7 overlapping annual generations. The females are sometimes larger and darker than the males. The larvae burrow into the seeds where their entire development (four instars plus pupal stadium) is completed. [Full text] [PubMed], Translation table 5 (Invertebrate Mitochondrial), Callosobruchus maculatus (Fabricius, 1775), WebScipio - eukaryotic gene identification, diArk - a resource for eukaryotic genome research. Callosobruchus maculatus (Fabricius, 1775) Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Callosobruchus > Callosobruchus maculatus. B) Rice. Case: Why are there two subtypes of C. maculatus?What contributed to the divergence in their traits? Callosobruchus maculatus (Fabricius, 1775) Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Callosobruchus > Callosobruchus maculatus. {The genus Callosobruchus was formerly in the family Bruchidae}.. Common name: Cowpea weevil.. Geographical distribution: Cosmopolitan, probably of West Africa origin, whence it was distributed around the globe with the trade in legumes. Habitat and Food Source(s): Mouthparts are for chewing. Soundarajan, R. P., Chitra, N., Geetha, S. and Poorani, J. Callosobruchus maculatus on … 2020: baaa062. International Journal of Pest Management 50: 251-258. The adult beetle is only about 1/8 inch long, and reddish brown with a large dark spot in the middle of each wing cover. Reference: How to cite this resource - Schoch CL, et al. Other bruchids that feed on stored products include: the pea weevil, Bruchus pisorum (Linnaeus), which feeds primarily on green peas; the broadbean weevil, B. rufimanus Boheman, which prefers kidney beans and lima beans; and the common bean weevil, Acantoscelides obtectus (Say). ES OpCo USA LLC is not liable for any damages resulting from the use or non-use of the information and each ES OpCo USA LLC affiliate is responsible for its own actions. Damage appears as round holes in the peas. and,Horber, E. 1975. The 3-parameter Gaussian model, y = aexp {–0.5 [(x – b)/c] 2}, was the one that best fit daily emergence data of C. maculatus and Z. subfasciatus adults (P < 0.0001; R 2 > 0.95; Fig. style based on spf13 Terminal (leaf) node. The larva is whitish. Steve Francia, Texas A&M Veterinary Medical Diagnostics Laboratory, Texas A&M College of Agrculture and Life Sciences, For additional information, contact your local. Although it is commonly known as the adzuki bean weevil it is in fact not a true weevil, belonging instead to the leaf beetle family, Chrysomelidae.Other common names include the pulse beetle, Chinese bruchid and cowpea bruchid. Larvae typically feed inside the cowpea, taking from 2 weeks to 6 months to develop before pupating there. The last segment of the abdomen extends out from under the short elytra, and also with black spots. and Sukprakarn, C. 1997. ©Georg Goergen/IITA Insect Museum, Cotonou, Benin: Identity Top of page Preferred Scientific Name. Taxonomy and etymology. C) Mazie. The beetles live only for 1-2 weeks. Why do male Callosobruchus maculatus harm their mates? Callosobruchus maculatus dorsal.jpg 720 × 540; 56 KB. Web site: https://www.google.co.il/search?q=callosobruchus+maculatus&noj=1&tbm=isch&tbo=u&source=univ&sa=X&ved=0CBwQsARqFQoTCIuJmfuMv8gCFYpAFAod5hAJpw&biw=1024&bih=695 http://en.wikipedia.org/wiki/Callosobruchus_maculatus, Uri Gerson Life Cycle: Adults may be found outdoors in flowers in early spring. Morphology: The body of the adult is 3-4.5 mm long, reddish-brown, with black spots on the prothorax and elytra. Journal of Stored Products Research 31: 335-41. Some rights reserved, This site is Common Name: Cowpea weevils Scientific Name: Callosobruchus maculatus (Fabricius) Order: Coleoptera Description: Adult weevils are 1/8-inch long, reddish-brown slightly elongate beetles compared to the typical rounded appearance of other members of this family (bruchids). Callosobruchus maculatus lateral.jpg 720 × 540; 57 KB. Shalom Applebaum, The Robert H. Smith Faculty of Agriculture, Food and Environment The Veseris mark, logo, and other identified trademarks are the property of ES OpCo USA LLC or its affiliates. Powered by Hugo by The correct answer is D. Explanation: Callosobruchus maculatus is a species of beetles known commonly as the cowpea weevil or … Adults move about readily and can infest seeds in the field, but can also breed continuously in stored dry cowpeas. Callosobruchus maculatus (cowpea weevil); flight form male. They pupate there, emerging as reproductively mature adults that are well adapted to storage conditions, requiring neither food nor water to reproduce. 1996 Protective mechanism of the Mexican bean weevil against high levels of alpha-amylase inhibitor in the common bean. Order: Coleoptera. 2012. Later the adult emerges from the “window.”. relevant scientific literature for the most reliable information. Adzuki beans have been genetically modified to express alpha-amylase inhibitors (alphaAI), making them resistant to the pest. They prefer dried cowpeas but will attack other beans and peas in storage. Biological control: Several hymenopterous parasitoids, such as Anisopteromalus calandrae, Uscana mukerjii and Dinarmus spp. Adult bruchids sometimes can be quite common on flowers in the springtime. Nwanze, K.F. The elytra are short, leaving the last segment of the abdomen exposed. Economic importance: Damage to lentils, especially if stored for extended periods, may reduce their germination capacity by up to 80%. Kapila, R. and H. C. Agarwal 1995. The Hebrew University of Jerusalem, This site is Common name: Cowpea Seed Beetle. Callosobruchus maculatus Taxonomy ID: 64391 (for references in articles please use NCBI:txid64391) current name. Six or seven generations may occur per year. Size: 2.7-3.8mm Basic colour: Brownish to blackish Pattern colour: Pale patches and bands of pubescence Preferred name: Callosobruchus maculatus ; Authority: (Fabricius) Other scientific names. Differences were observed in the population development patterns of C. maculatus in cowpea and Z. subfasciatus in common bean. 1; Table 1), where a = maximum peak of daily emergence of … This is a common species of the bean "weevils", preferring cowpeas over other legumes but also infesting any other dried beans or peas in storage. Host plants: Many stored legumes, such as cowpea, soybean, gram and peas. {The genus Callosobruchus was formerly in the family Bruchidae}. This species may be native to North America, but now is found throughout the world as a pest of stored dry legumes.