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Genus Pachyonychus

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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Galerucinae (Skeletonizing Leaf Beetles and Flea Beetles)
Tribe Alticini (Flea Beetles)
No Taxon (Sphaeronychus Genus Group)
Genus Pachyonychus
Synonyms and other taxonomic changes
Pachyonychus Melsheimer 1847
=Clarkaltica Weise
NB: Not to be confused with Pachyonychis H. Clark 1860, another member of the same tribe
Monotypic genus(1)
e.US (PA-MO-AL-FL); more common in the northern part of the range(1)
adults feel on Smilax (Liliaceae)(1)
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.