''Pachyonychis'' is a genus of

flea beetle The flea beetle is any small, jumping beetle of the leaf beetle family (Chrysomelidae) that is part of the tribe (biology), tribe Alticini, which is part of the subfamily Galerucinae. Historically the flea beetles were classified as their own ...

s in the family

Chrysomelidae The beetle family Chrysomelidae, commonly known as leaf beetles, includes over 37,000 (and probably at least 50,000) species in more than 2,500 genera, making it one of the largest and most commonly encountered of all beetle families. Numerous s ...

containing a single described species, ''P. paradoxa'', from the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

. The name is extremely similar to a different flea beetle, '' Pachyonychus paradoxus'', named in 1847, that occurs on the same host plant; Crotch, in 1873, erroneously thought that Clark's name was spelled the same as the other species, and replaced Clark's name.

References

Alticini Monotypic Chrysomelidae genera Articles created by Qbugbot Taxa named by Hamlet Clark {{Galerucinae-stub