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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

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Genus Oncopeltus

spotted orange beetles on butterfly weed - Oncopeltus fasciatus Large Milkweed Bugs - Oncopeltus fasciatus Bug on Asclepias welshii - Oncopeltus fasciatus Large Milkweed Bug - Oncopeltus fasciatus Oncopeltus sexmaculatus Unknown beetle - Oncopeltus sexmaculatus Oncopeltus fasciatus nectaring on passiflora - Oncopeltus fasciatus Oncopeltus fasciatus grooming - Oncopeltus fasciatus - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Pentatomomorpha
Superfamily Lygaeoidea
Family Lygaeidae (Seed Bugs)
Subfamily Lygaeinae
Genus Oncopeltus
Explanation of Names
Oncopeltus Stål 1868
2 subgenera, with 7-8 spp. in our area(1)(2), 19 spp. in the New World(3), and 42 spp. total(2)
8-16 mm(3)
pantropical genus, ranging into US (O. fasciatus also into ON); in our area much more diverse in the deep south(3)
They feed primarily on species of milkweeds.
Life Cycle
General life cycle and care information here.
more communal than Lygaeus, particularly in the nymphal stage
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.The Lygaeidae of Florida (Hemiptera: Lygaeidae).
Slater & Baranowski. 1990. Florida Dept. of Ag. and Consumer Services, Gainesville. xv + 211 pp.
3.A Genus Level Revision of Western Hemisphere Lygaeinae (Heteroptera: Lygaeidae) with Keys to Species
Alex Slater. 1992. University of Kansas Science Bulletin.