88 



and whitish pubescence which becomes slightly longer and suberect 

 and pale yellowish grey or blackish on the rather broad middle part ; 

 the seventh segment furnished with abundant long erect and covered 

 with black bristly hairs. 



Length : 16-19 mm - 



Male. Almost like the female. Head much larger than that 

 of the female ; frontal triangle narrow with a sharp pointed expansion 

 above, yellowish grey but dull brown about the upper third, flat, with 

 a narrow distinct longitudinal median sulcus which becomes very faint 

 or is sometimes altered by a faint carina on the dark portion, and with. 

 two or four oblique or transverse very vague furrows on the greyish. 

 portion ; face uniformly dusted with yellowish grey, bare on the small 

 triangular sunken epistoma but with long (though comparatively short) 

 fairly dense and fine greyish yellow pubescence on the inflated cheeks; 

 pubescence on the lower part of the cheeks, at the back of the mouth, 

 and on the jowls much longer and pale greyish yellow (almost whitish); 

 back of the head conspicuously hollowed out and covered with nume- 

 rous but scattered whitish pubescence, with a very narrow yellowish 

 grey postocular rim which at the temple region is practically sunk 

 behind the eyes, and behind which is a very short very inconspicuous 

 brownish yellow ciliation which hardly grows longer near the top 

 angle of the eyes and which has absolutely no long overhanging or 

 outstanding hairs, but in some lights the short ciliation on the temple 

 regions is almost whitish ; vertex slightly raised, very small, hardly 

 extending lower down between the eyes, brown or dark brown, and 

 behind which is some rather dense short yellowish brown pubescence 

 which is longer than that of the postocular ciliation. Proboscis nar- 

 rower than that in the female, on the posterior side the stalk covered 

 with numerous long pale yellowish white pubescence which becomes 

 more yellowish on the apex of the stalk, the sucker-flaps about half as long 

 as the whole length of the proboscis and furnished with some short 

 (less conspicuous than in the female) brownish pubescence. Palpi pale 



