415 



each segment except the first, each band more or less roundly and 

 broadly notched at the middle part, this being mainly caused of the 

 extension of numerous dense short depressed pale brownish yellow or 

 reddish yellow pubescence on the bands ; pubescence on the rest short 

 thin and black, but on the seventh segment there are numerous longer 

 conspicuous pale brownish yellow somewhat bristly hairs and are no 

 black pubescence, while on the sixth segment there is a few black one 

 only at the middle of the anterior margin. 



Length : 25-30 mm. 



Male. As the female but much smaller, with the abdomen 

 shorter than the head and thorax (including the scutellum) together. 

 Head very large, broader than the thorax but shorter. Frontal triangle 

 comparatively small, orange yellow with the upper angle brown tinged 

 and prolonged narrowly a short distance between the eyes, the median 

 longitudinal sulcus fine though conspicuous and entire throughout, on 

 each lateral division there are one or two or more unwell-defined irregular 

 transverse furrows which often are hardly recongisable. Face longer 

 than its widest lower part, greyish yellow or orange yellow ; epistoma 

 deeply sunken, elongate triangular with the tip cut transversely, more 

 tinged with yellow above and quite bare ; cheeks moderately inflated, 

 parallel-sided with the oblique upper margin, obscured by rather short 

 but dense soft pale brownish yellow pubescence which grows rather 

 suddenly longer about the jowls ; back of the head hollowed out but 

 slightly on the lower part, greyish yellow or yellow, covered with 

 numerous yellowish soft hairs which become much sparser above, with 

 the pale brownish yellow posotcular bare rim very narrow and gradually 

 but slightly broadened from the top angle to the jowls, behind this 

 rim very short but dense yellowish brown or brown ciliation which 

 never enters into the vertex but extends below to the jowls at where 

 it becomes slightly longer though rather sparse ; vertex very narrow, 

 elongate-eliptical, slightly raised from the eye-level, with a more or 

 less distinct longitudinal sulcus and with a few short yellowish brown 



