Tetragonoderus (Peronoscelis), Chaudoir

Shpeley, Danny & Ball, George E., 2008, Taxonomic review of the Neotropical Tetragonoderus quadriguttatus assemblage (Coleoptera: Carabidae: Cyclosomini) with description of T. deuvei, new species, and new West Indian and Nearctic locality records, Insecta Mundi 2008 (50), pp. 1-16 : 5

Key to Western Hemisphere genera of long-spurred lebiomorphs, and species groups of subgenus Peronoscelis Chaudoir (modified from Ball and Shpeley 2002: 274)

1. Labial mentum toothed. Tibial spurs of middle and hind legs fimbriate (Ball 1983: 523, cf. Fig. 6K-L). Mandible basally with dorsolateral and ventrolateral margins in line, or explanate, with lateroventral margin distinctly laterad laterodorsal margin ................................................... 2

- Labial mentum edentate. Tibial spurs with lateral margins smooth, not fimbriate. Mandible with laterodorsal margin extended laterad ventrolateral margin ....................................................... .................................................................................... Tribe Masoreini , Anaulacus MacLeay

2(1). Head posteriad eyes constricted in form of narrow neck. Tarsal claws prominently pectinate. Mandible basally explanate, lateroventral margin extended distinctly laterad dorsolateral margin ........................................................................................ Tribe Lebiini , Nemotarsus LeConte

- Head posteriad eyes not constricted in form of narrow neck. Tarsal claws smooth, or with very short denticulations. Mandible not explanate, laterodorsal and lateroventral margins in line. ............................................... Tribe Cyclosomini , Tetragonoderus ( Peronoscelis Chaudoir ) 3

3(2). Pronotum with posterior margin bisinuate medially. Labial paraglossae not connected apically by a transligular membrane ................................................................ figuratus species group - Pronotum with posterior margin approximately straight. Paraglossae joined apically by a transligular membrane ............................................................... intersectus species group