Tetragonoderus Dejean, 1829

Pandolfi, Alessandra & Schnepp, Kyle E., 2024, New distributional records of the genus Tetragonoderus Dejean, 1829 from the United States of America, including an updated key to species (Coleoptera: Carabidae), Fragmenta entomologica 56 (1), pp. 65-72 : 70

Key to Tetragonoderus Dejean, 1829 s pecies of the United States of America

Adapted from Lindroth (1969) and Choate (2001).

1. Elytra unicolored; entire body pale, rufo-testaceous .... ..................................... Tetragonoderus pallidus Horn

- Bicolored with spotted or maculate elytra; body dark ...... 2

2. Elytra with 4 spots (two apical and 2 basal), rarely uniformly black; exotic ..................................................... ........................... Tetragonoderus laevigatus Chaudoir

- Elytra mottled with brown and pale maculae ….…… 3

3. Bicolored elytra, piceous with pale striae present in front of the apex that can appear rudimentary and transverse pale makings that may appear as spots on the basal half of the elytra, elytral disc around suture dark; at least palpi, antennae from 2nd or 3rd segment and apex of tibiae infuscated ........................................ .......................... Tetragonoderus intersectus (Germar)

- Bicolored elytra, mottled with brown about the middle and pale striae present along the entire elytra, elytral disc around suture pale or with pale maculations; legs testaceous, pale brown… 4

4. Head and prothorax black with a tinge of greenish, shining; prothorax not granulate on center; elytral microsculpture transverse; elytra mottled with brown about the middle and incoherent transverse fascia at middle, dark at the middle basal apically; absence of darker punctures on the 3rd and 8th interstriae; claws serrate internally; 4.5 mm long ..................................... ......................... Tetragonoderus fasciatus (Haldeman)

- Head and prothorax black with a tinge of greenish bronze, opaque; prothorax quite dull, granulate all over; elytral microscultpure isodiametric; elytra mottled with brown about the middle, transverse pale striae, with small dark apical band and a broad basal spot extended a short distance along the suture; some punctures on the 3 rd and 8 th interstriae are darker; claws smooth; 5–6 mm long ................................................... ............................. Tetragonoderus latipennis LeConte