Nothopleurus

Santos-Silva, Antonio, Swift, Ian P. & Nearns, Eugenio H., 2010, Division of the genus Nothopleurus Lacordaire, 1869 (Coleoptera: Cerambycidae: Prioninae), Zootaxa 2643, pp. 1-44 : 10-11

Key to the species of Nothopleurus

1. Length of ventrite V less than 0.3 times the basal width. Male.................................................................................. 2

- Length of ventrite V greater than 0.4 times the basal width. Female.......................................................................... 5

2 ( 1). Dorsal carina of mandible strongly elevated at basal half, forming a subacute tooth............................ N. subsulcatus

- Dorsal carina not forming a subacute tooth at basal half ............................................................................................ 3

3 ( 2). Mandibles shorter than head; lateral outer face of mandible strongly tumid; hypostomal area with a plate, parallel to the hypostomal carina............................................................................................................................... N. madericus

- Mandibles, usually, longer than head; lateral outer face of mandible not strongly tumid; hypostomal area without plate parallel to the hypostomal carina ........................................................................................................................ 4

4 ( 3). Mandible of major male (usually longer than 40 mm) not notably narrowed at apical fourth ( Fig. 36), inner face dis- tinctly oblique, in general, more or less concave; outer face of mandible of minor male distinctly tumid...................................................................................................................................................................................... N. castaneus

- Mandible of major male (usually longer than 40 mm) notably narrowed at apical fourth ( Fig. 38), inner face almost vertical; outer face of mandible of minor male not notably narrowed....................................................... N. lobigenis

5 ( 1). Dorsal carina of mandible strongly elevated at basal half ( Fig. 42)............................................................................. 6

- Dorsal carina of mandible not strongly elevated at basal half ( Figs. 37, 39) .............................................................. 7

6 ( 5). Hypostomal area with a plate parallel to the hypostomal carina.............................................................. N. madericus

- Hypostomal area without plate parallel to the hypostomal carina.......................................................... N. subsulcatus

7 ( 5). Outer face of mandible tumid with the general appearance of dorsal carina, in dorsal view, wide .......... N. castaneus

- Outer face of mandible more straight with the general appearance of dorsal carina, in dorsal view, not wide ................................................................................................................................................................................ N. lobigenis