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Genus Oncopeltus

Oncopeltus fasciatus_first instar - Oncopeltus fasciatus Bug Nymphs - Oncopeltus fasciatus Smallest large milkweed bugs I've ever seen - Oncopeltus fasciatus Blood-colored Milkweed Bug - Oncopeltus sanguineolentus Milkweed bug - Oncopeltus fasciatus Large Milkweed Bug - Oncopeltus fasciatus Oncopeltus fasciatus  ? - Oncopeltus fasciatus Large Milkweed Bug - Oncopeltus fasciatus
Classification
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
Numbers
2 subgenera, with 7-8 spp. in our area(1)(2), 19 spp. in the New World(3), and 42 spp. total(2)
Size
8-16 mm(3)
Range
pantropical genus, ranging into US (O. fasciatus also into ON); in our area much more diverse in the deep south(3)
Food
They feed primarily on species of milkweeds.
Remarks
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.