Temnostoma. 



555 



lines; above the wing-root are some long, a little stronger hairs. 

 Scutellum bluish black, shining, dull on the basal part, with long, 

 yellow hairs. Pleura with an elongated, yellow pruinose spot down 

 along the mesopleura, and with long, yellow hairs. Abdomen dull 

 black with six yellow pruinose bands on second, third and fourth 

 segments; the bands lie near the front margin and at the hind margin 

 of each segment; the bands are, except the second, rather broad, 

 considerably broader than the interjacent black bands; the first band 

 is placed at some distance from the front margin, it is slightly attenuated 

 towards the middle and exceedingly narrowly interrupted in the middle; 

 the second band is somewhat narrow and attenuated and quite thin 

 in the middle and leaves here the black hind margin free; the third 

 band is quite near the front margin, it is generally produced triangularly 

 backwards in the middle or connected with the fourth band by a 

 narrow, yellow middle line; the fifth band is still nearer the front 

 margin and is always connected by a yellow middle line with the 

 yellow apical band; the two bands on each segment are connected 

 at the sides; the bands are all caused by pruinosity. Abdomen is 

 clothed with short, all yellow hairs ; it looks as they are a little darker 

 on the black bands, and I think there are some black hairs inter- 

 mingled but they are not easy to detect. Genitalia yellowish red with 

 yellow hairs. Venter with first and second segments black, the latter 

 with traces of a yellow front and hind margin; third and fourth seg- 

 ments black with all the margins broadly yellow ; the hairs on venter 

 long and pale. Legs yellow and black, front legs black except the 

 knees, the yellow colour stretching more or less inwards below the 

 femora; posterior legs yellow, the femora more or less black on the 

 basal half or more, the hind femora only below and behind; the last 

 tarsal joint also generally more or less darkened or with a dark spot ; 



Fig. 185. Wing of T. vespi forme d". 



the legs somewhat short-haired but on the femora the hairs longer, 

 especially behind the anterior femora; the hairs are yellow but all 

 black on front tibiæ and tarsi, and likewise the short hairs at the 



