denticle near the basal denticle; median depression with a tuft of several 

 long, light setae. Upper blade of right mandible with one tooth; lower blade 

 with 2 large teeth and a small basal tooth. Outer setae light, long, situated 

 close together dorsoventrally in the basal quarter. 



FIGURES 639-642. Holocentropus pi cico rni s Steph.: 



639 — head, ventral; 640 — mandible, dorsal; 641 — maxillolabium; 642 — pronotum. 



Maxillolabium (Figure 641): submentum brown, with lateral processes 

 at the anterior margin; setae strong, relatively long, reddish brown; both 

 setae of stipes dark; distal seta situated on a sclerite; second seta situated 

 on a membrane, larger than the other setae; maxillary palpifer blackish at 

 444 the base, with a strong apical seta and a dark reddish brown spot; basal seta 

 small and light; palps and galea brownish; setae and rods of galea light, 

 transparent; mentum reddish brown; setae of ventral sclerites pale, thin, 

 relatively long; labial palps small. 



502 



