Cercopeus

O’Brien, Charles W., Ciegler, Janet C. & Girón, Jennifer C., 2010, Weevils of the genus Cercopeus Schoenherr from South Carolina, USA (Coleoptera: Curculionidae: Entiminae), Insecta Mundi 2010 (141), pp. 1-29 : 3

Key to known males of Cercopeus

1. Foretibia straight on outer margin (may be sinuate or toothed on inner margin) ..................... 2

– Foretibia slightly to markedly curved or bent ............................................................................ 4

2(1). Midfemur enlarged, with two (or one) rounded knob-like processes at apical third ( Fig. 16 ); pronotum striate; length 3.8-4.5 mm ....................................................................... C. femoratus n. sp.

– Midfemur unmodified; pronotum punctate; length 2.3-3.0 mm ................................................. 3

3(2). Pronotum subquadrate, widest at basal third, sides straight, scales contiguous with wide median and lateral pale vittae; length 2.3-2.7 mm; TX ........................................ C. isquitus Sleepe r

– Pronotum rounded, widest at middle, sides evenly curved, scales not contiguous, integument apparent, most specimens lacking pale vittae; length 2.4-3.0 mm; SC ......... C. paulus n. sp.

4(1). Foretibia markedly curved ( Fig. 17 ); forefemur greatly enlarged, some specimens with ventral tooth at apical third; midfemur with one or two blunt teeth ventrally near apex .................. 5

– Foretibia slightly curved; forefemur enlarged or not but without ventral tooth; midfemur unmodified .................................................................................................................................................. 6

5(4). Inner margin of foretibia with two spines enclosing circular notch ( Fig.18 ); pronotum striate ... ....................................................................................................................... C. tibialis n. sp.

– Inner margin of foretibia sinuate, denticulate, with apicoventral tooth; pronotum punctate, most specimens with median longitudinal glabrous area .......................................... C. alexi n. sp.

6(4). Inner margin of foretibia with large triangular tooth at basal third ( Fig. 19 ); lateral margins of prothorax narrowly rounded (Fig. 26); length 4.0- 4.4 mm .......................... C. cornelli n. sp.

– Inner margin of foretibia slightly to moderately sinuate, without tooth; lateral margins of prothorax broadly rounded; length 2.7-3.9 mm ........................................................................................ 7

7(6). Pronotum slightly wider than long; integument reddish brown; length 2.7-3.0 mm; north FL, south GA .............................................................................................. C. komarecki O’Brien

– Pronotum slightly longer than wide; integument dark brown; length 3.2-4.3 mm; SC ............... ....................................................................................................................... C. skelleyi n. sp.

Figures

Figure 16-23. Legs of Cercopeus species. 16) Left midfemur, C. femoratus, male, ventral view. 17) Left foretibia, C. alexi, male, lateral view. 18) Left foretibia, C. tibialis, male, lateral view. 19) Right foretibia, C. cornelli, male, ventral view. 20) Right foretibia, C. chrysorrhoeus, female, dorsal view. 21) Left foretibia, C. maspavancus, female, dorsal view. 22) Right foretibia, C. femoratus, female, dorsal view. 23) Left foretibia, C. tibialis, female, lateral view.