132 I. AHMAD 



Key to Species 



i Entire propleuron and pronotum shining black ; apical antennal segments long, 



usually half as long again as third ......... 2 



- Propleuron and pronotum light brown, sometimes tinged with black ; apical antennal 



segments short, never half as long again as third ...... 5 



2 Venter of abdomen pale brown, unicolourous ; ocelli pale brown, unicoloured, 



minute, interocellar distance less than half the distance between an ocellus and an 

 eye. (Posterior margin of seventh abdominal tergum truncated, slightly medially 

 produced (Text-fig. 448) ; in aedeagus, second right lateral conjunctival appendage 

 partly membranous (Text-fig. 450)) ..... insularis (p. 138) 



- Venter of abdomen always with black spots or markings ; ocelli with conspicuous 



brownish black margins, large interocellar distance, usually more than half the 

 distance between an ocellus and an eye ........ 3 



3 Large and robust species (<J I3*5-I5*2 mm., <j> 15-2-16-0 mm.) ; venter of abdomen 



with four black transverse lines ; usually basal halves of apical antennal segments 

 pale. (Posterior margin of seventh abdominal tergum truncate (Text-fig. 451) ; 

 in aedeagus, frontal conjunctiva with bunches of spines (Text-fig. 452) ; in the $ 

 first gonocoxae triangular, with rounded apices (Text-fig. 457)) . papuensis (p. 140) 



- Small species (o* 12-4-13-2 mm., $ 12-8-13-6 mm.) ; black transverse lines on venter 



of abdomen absent ; only small basal portions of apical antennal segments pale 4 



4 A pair of black dots present anteriorly on venter of abdomen ; basal antennal seg- 



ments slightly shorter than third ; ocelli comparatively distant from each other, 

 interocellar distance about two-thirds of the distance between an ocellus and an eye. 

 (Claspers symmetrically placed (Text-fig. 461) ; in the aedeagus, second right lateral 

 conjunctival appendage only slightly notched near apex (Text-fig. 466) ; sperma- 

 theca elongated, with smooth curved neck (Text-fig. 465)) . . spinosus (p. 142) 



- Round black dots absent, but two black marks present on either side, being a con- 



tinuation of the connexival colour on to venter of abdomen ; basal antennal seg- 

 ments slightly longer than third ; ocelli comparatively close together, interocellar 

 distance about half the distance between an ocellus and an eye. (Claspers asym- 

 metrically placed (Text-fig. 440) ; second right lateral conjunctival appendage 

 distinctly bifid at apex (Text-fig. 441) ; spermatheca curved, with a transverse 

 neck (Text-fig. 443)) ....... erythrocephalus (p. 137) 



5 Species of very small size (8-4-10 mm. in length) ; basal antennal segments very 



short, subequal to second ; third rostral segment comparatively longer, more than 

 half of second. (In 5", backward lateral projections of seventh abdominal tergum 

 inconspicuous ; aedeagus with long and curved dorsal appendage, rounded at 

 apex ; in $, spermatheca almost tube-shaped, with thumb-like base (Text-fig. 434)) 



discopterus (p. 135) 



- Species larger (12-0-13-5 mm.) ; basal antennal segments distinctly longer than 



second ; third rostral segment comparatively short, distinctly half the length of 



the second ............. 6 



6 A pair of black dots present anteriorly on each side of venter of abdomen ; hemielytra 



usually pale, unicolourous. (Posterior margin of o* seventh abdominal tergum with 

 backward spine-like projections on either side (Text-fig. 421) ; in aedeagus, frontal 

 conjunctiva with usually two or three spines (Text-fig. 425) ; posterior margin of $ 

 seventh abdominal sternum deeply emarginate (Text-fig. 427)) . annulipes (p. 133) 



- Without black dots on venter of abdomen ; hemielytra tinged with black. (Back- 



ward spine-like processes of the posterior margin of the $ seventh abdominal 

 tergum absent (Text-fig. 469) ; in the aedeagus, frontal conjunctiva with a bunch 

 of spines (Text-fig. 472)) ........ timoris (p. 144) 



