Nephus, Mulsant, 1846

Key to species of the genus Nephus View in CoL from Pakistan

1. Elytra with single or two oval maculae on each elytron....................................................... 2

-. Elytra entirely or predominantly rufous without well-defined maculae........................................... 6

2. Elytron with a single macula in posterior part............................................................... 3

-. Elytron with two maculae, in anterior and posterior parts...................................................... 5

3. Elytral macula, yellowish, well defined, not touching posterior margin of elytron................................... 4

-. Elytral macula, dark reddish-brown, not well defined, touching posterior margin of elytron ( Fig. 1a)................................................................................................... N. ancyroides Pang & Pu

4. Pronotum with lateral sides reddish-brown, only discal area dark brown to black ( Figs 2a–b), apex of penis with long flagellum ( Fig. 2f)............................................................................ N. bielawskii (Fürsch)

-. Pronotum dark brown to black ( Figs 4a–c), apex of penis without flagellum ( Fig. 4g)............. N. eurypodus Yu & Lau

5. Antennae composed of 11 antennomeres, abdominal postcoxal lines not recurved laterally ( Fig. 5d), penis guide in lateral view very broad at basal half then narrowing toward apex ( Fig. 5g), penis flagellum on inner margin ( Fig. 5f)............................................................................................. N. quadrimaculatus (Herbst)

-. Antennae composed of 10 antennomeres ( Fig. 8e), abdominal postcoxal lines slightly recurved laterally ( Fig. 8f), penis guide almost sub-parallel sided, much narrower ( Fig. 8h), penis with flagellum on outer apical margin ( Fig. 8g).............................................................................................. N. similincludens Canepari

6. Pronotum unicolor, rufous or dark brown.................................................................. 7

-. Pronotum bicolor, rufous with dark brown to black macula at bases at base ( Figs 7a–b)............... N. roonwali Kapur

7. Pronotum dark brown to black, elytra with discal area light brown and base, lateral margin, and apex dark ( Figs 3a–b).................................................................................. N. caneparii Fürsch & Uygun

-. Pronotum and elytra entirely rufous ( Figs 6a–b)............................................. N. regularis (Sicard)