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Genus Oncopeltus

Orange and Black Beetle - Oncopeltus fasciatus red bug - Oncopeltus sanguineolentus Large Milkweed Bug - Oncopeltus fasciatus Unknown nymph - Oncopeltus fasciatus ? - Oncopeltus cayensis True Bug - Oncopeltus fasciatus Beetle on flower - Oncopeltus fasciatus Male, Oncopeltus fasciatus - Oncopeltus fasciatus - male
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.