Aphotaenius, Cartwright, Martineziana Chalumeau and Ozdikmen, 1952

KEY TO THE SPECIES OF APHOTAENIUS View in CoL

1. Metaventrite with distinct, large punctures medially, becoming foveate laterally ( Figs. 21 View Figs , 45 View Figs ); clypeus always sharply toothed on each side ( Figs. 6–7 View Figs , 20 View Figs , 44 View Figs ); Nearctic ( Mexico-USA) ................................................. 2

1ʹ. Metaventrite lacking distinct punctures, when present fine to minute ( Figs. 15 View Figs , 27 View Figs , 33 View Figs ); clypeus angulate or broadly rounded on each side ( Figs. 8–13 View Figs View Figs ); South America ............ 3

2. Elytral striae with smaller punctures, punctures near base weakly encroach upon intervals, similar in size to coarse pronotal punctures ( Figs. 4 View Figs , 6, 20 View Figs ); elytra with lateral and apical intervals distinctly convex, but not cariniform; eastern USA.......................... ......................... A. carolinus (Van Dyke)

2ʹ. Elytral striae with larger punctures, punctures near base encroach upon interval, larger than coarse pronotal punctures ( Figs. 7 View Figs , 44 View Figs ); elytra with lateral and apical intervals nearly cariniform between striae; Mexico ( Nuevo León, Tamaulipas) .......... A. howdeni Cartwright

3. Head posteriorly with band of punctures distinctly larger than on upper clypeus ( Figs. 8–10 View Figs View Figs ) ................................................. 4

3ʹ. Head posteriorly with punctures similar in size and distribution as on upper clypeus ( Figs. 11–13 View Figs ) ............................................... 6

4. Clypeal margin broadly to narrowly rounded on each side ( Figs. 9–10 View Figs View Figs ); elytral intervals with scattered punctures, lacking carinate appearance ( Figs. 14 View Figs , 26 View Figs ), rarely appearing carinate on declivity ............................................... 5

4ʹ. Clypeal margin with distinct angulation or tooth on each side ( Figs. 8 View Figs , 32 View Figs ); elytral intervals on most of disc and declivity with row of punctures on each side of middle, eroding sides, giving a carinate appearance ( Figs. 5 View Figs , 32 View Figs ); Bolivia ( Santa Cruz), Brazil ( Minas Gerais) ...................................... A.elegans Skelley and Vaz-de-Mello,new species

5. Larger, length> 3 mm; posterior margin of pronotum more angular, weakly lobe-like ( Fig. 26 View Figs ); clypeus smooth, glossy ( Fig. 9 View Figs ); Colombia (Antioquia, Boyacá, Cundinamarca, Magdalena, Norte de Santander), Venezuela ( Táchira) ................. A. convexus (Harold)

5ʹ. Smaller, length < 3 mm; posterior margin of pronotum bluntly rounded, not lobe-like ( Fig. 14 View Figs ); clypeus alutaceous, dull ( Fig. 10 View Figs ); Bolivia ( Santa Cruz) ................... A. cambeforti Chalumeau

6. Coarse pronotal punctation restricted to posterior third of disc ( Figs. 11 View Figs , 50); Brazil ( Rio Grande do Sul, Santa Catarina) ................. ....................... A. plaumanni Cartwright

6ʹ. Coarse pronotal punctation evenly distributed over disc ( Figs. 12–13 View Figs ) ......................... 7

7. Clypeal margin angulate on each side ( Figs. 12 View Figs , 41 View Figs ); Bolivia ( Santa Cruz) .................... .......................... A. hamelae Skelley and Vaz-de-Mello , new species

7ʹ. Clypeal margin rounded on each side ( Figs. 13 View Figs , 38); Brazil ( Rio Grande do Sul) ........... ........................... A. gaucho Skelley and Vaz-de-Mello , new species