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Family Thyreocoridae - Negro Bugs

Negro Bug - Galgupha nitiduloides Bug on Brittle Bush beetle? Small Black Bug with red or white edges Galgupha Small black button like beetle - Galgupha Shieldbackbug nymphs on Collomia grandiflora - Corimelaena Cydninae?
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 Pentatomoidea
Family Thyreocoridae (Negro Bugs)
Other Common Names
Ebony Bugs, Black Bugs
Synonyms and other taxonomic changes
Cormelaenidae
often treated as part of Cydnidae (Thyreocorinae and Corymelaeninae)(1)
Explanation of Names
Thyreocoridae Amyot & Serville 1843
Numbers
>40 spp. in 4 genera in our area (all in the Corimelaeninae)(2), TBA spp. in genera worldwide
Size
3-6 mm(3)
Identification
Shiny black, broad oval, convex shape. Tibiae have no spines or slender ones. Large scutellum covers most of abdomen and wings. Look like beetles but have 5-segmented antennae and 4-segmented beak.(3)
Habitat
on short vegetation(4)
Food
feed on flowers and developing seeds(4)
Internet References
Key to FL spp. (Andersen et al. 2002)
Works Cited
1.Biodiversity of the Heteroptera
Henry T.J. 2009. In: Foottit R.G., Adler P.H., eds. Insect biodiversity: Science and society. Oxford: Wiley-Blackwell: 223-263.
2.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
3.A Field Guide to Insects
Richard E. White, Donald J. Borror, Roger Tory Peterson. 1998. Houghton Mifflin Co.
4.An updated synopsis of the Pentatomoidea (Heteroptera) of Michigan
Swanson D.R. 2012. Great Lakes Entomologist 45: 263-311.