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Subfamily Lygaeinae

Seed bug - Lygaeus kalmii Milkweed Bug (immature?) - Oncopeltus fasciatus Large Milkweed Bug - Oncopeltus fasciatus Oncopeltus sexmaculatus - moult series - Oncopeltus sexmaculatus Ochrimnus? - Ochrostomus uhleri Hemipteran for ID - Ochrimnus mimulus Female, Melacoryphus rubicollis? - Melacoryphus rubicollis - female Oncopeltus sp., possibly sexmaculatus? - Oncopeltus sexmaculatus
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
Numbers
the most diverse lygaeid subfamily, with 45 spp. in 8 genera in our area(1), 640 spp. in ~60 genera worldwide(2)
Identification
Pronotum, scutellum, and hemelytra without punctations. Central area of scutellum separated from posterior edge of pronotum by a distinct transverse basal depression. Color usually black with red markings. Claval region of hemelytra forming a median commissure. Apical margin of corium striaght. Hemelytral membrane usually dark in color (3).

keys to genera, subgenera, and species (4).
Range
worldwide and throughout NA; most diverse in the tropics(2)
Food
often associated with species belonging to the Asclepiadaceae and Apocyanaceae, and some probably feed on cast seeds(2)
Remarks
Lygaeinae often have aposematic colouration and are probably associated with Müllerian mimicry complexes involving other pentatomomorphan taxa(2)
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.Zoological catalogue of Australia: Hemiptera: Heteroptera (Pentatomomorpha)
Cassis G., Gross G.F. 2002. CSIRO Publishing, 751 pp.
3.Seed Bugs of Virginia (Heteroptera: Lygaeidae)
Richard L. Hoffman. 1996. Virginia Museum of Natural History.
4.A Genus Level Revision of Western Hemisphere Lygaeinae (Heteroptera: Lygaeidae) with Keys to Species
Alex Slater. 1992. University of Kansas Science Bulletin.