Drosophila montium

Key to males of Australian Drosophila montium subgroup species

Keys to the Australian genera of Drosophilidae and many species have been given by Bock (1976, 1982). Australian species of the montium subgroup key to Bock’s (1982) couplet 27.

1 Abdomen blackened apically .............................................................. sp cf. jambulina

- Abdomen tan apically, not distinctly blackened .......................................................... 2

2 Secondary clasper of male external genitalia with 3 medial black bristles .................... ....................................................................................................... birchii, dominicana *

- Secondary clasper of male external genitalia with 2 medial black bristles ................. 3

3 Ventral medial bristle on secondary clasper appreciably smaller than dorsal bristle; caudal margin of novasternum strongly convex, with a pair of long, close submedian spines; basal teeth of the proximal sex comb not tightly appressed ................ kikkawai

- Medial bristles on secondary clasper subequal; caudal margin of novasternum not strongly convex, with a pair of short, close submedian spines; basal teeth of the proximal sex comb tightly appressed (Figs. 3, 10) .............................................................. 4

4 Primary clasper (surstylus) with short stout bristles (Fig. 1). Cercus entirely light tan. ............................................................................................................................. serrata

- Primary clasper with robust coarse bristles (Fig. 7). Cercus light tan ventrally and dark tan along dorsomedial margin ................................................................... bunnanda **