Anillinus, Casey, 1918

Sokolov, Igor M., Carlton, Christopher & Cornell, James F., 2004, Review of Anillinus, with Descriptions of 17 New Species and a Key to Soil and Litter Species (Coleoptera: Carabidae: Trechinae: Bembidiini), The Coleopterists Bulletin 58 (2), pp. 185-233 : 191

Key to Soil and Litter Species of Anillinus

The following identification key for non-troglobitic Anillinus includes all described species except A. dohrni (whereabouts of type unknown). The key makes use of distributional information that may prove to be incomplete with additional sampling. Therefore, dissection and examination of male genitalia should be used for confirmation when possible.

1 Microsculpture indistinct or absent from pronotal disc ( Figs. 6–7, 9 ) - - - - - - - - - - - - - 2

19 Microsculpture of pronotum pronounced or fine but evident across disc as a network of isodiametric polygonal meshes ( Fig. 8 ). - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12

2 Beetles from states outside Appalachian Mountains (Arkansas, Florida). Larger (. 1.8 mm); elytral interneurs obvious laterad discal setae; male metafemora bearing a denticulate expansion in apical third (as in Figs. 10, 12) - - - - - - - - - - - - - - - - 3

29 Beetles from Appalachian Mountains of Georgia, North and South Carolina, Tennessee, and Virginia (including piedmont region). Smaller (, 2.1 mm); elytral interneurs obvious only mediad discal setae; male metafemora simple (as in Figs. 11, 13) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

3 Body robust; pronotum with margins more or less rectilinearly convergent posteriad (ratio of pronotal maximum width/width of pronotal base 1.26), not

Figures

Figs. 6–9. Pronota of Anillinus spp., scale ¼ 0.3 mm. 6) Anillinus erwini n. sp.; 7) A. fortis