irregularly shaped blackish spot in the middle, the second segment 

 with two chevron-like black spots not quite joining above, their bases- 

 resting on the posterior border; the remaining segments in the darker 

 specimens almost black, with narrow yellowish or yellowish grey 

 borders extending in the middle to triangular spots, and with a trace 

 of a yellowish spot on each side of the third segment, in sometimes 

 the yellowish trace not occuring ; in the yellowish species the yellow 

 colour being more expanding and on the posterior segments more ex- 

 tending leaving only black spots very similar to those in the second 

 segment but not converging so much towards each other, and the 

 lateral reddish yellow spots conspicuously occuring oa the third and 

 fourth segments, these two segments usually having the similar but 

 inconspicuous reddish yellow spots at the extreme sides ; pubescence 

 scattered on all over the surfaces yellowish, on the second segment it 

 is intermixed with blackish hairs at the sides, and the pubescence on 

 the blackish parts is mostly black. Ventre usually strongly convex 

 but at the apex quite flat, blackish obscured by a more dense yellow- 

 ish tomentum, two basal segments with the yellowish lateral markings 

 and the remaining segments with a narrow yellowish posterior border ; 

 in the paler specimens the three basal segments almost entirely yellow 

 and the remainings blackish with a narrow yellowish grey posterior 

 margin ; pubescence very fine, almost depressed, yellowish. 



Length : 8- 1 1 mm. 



Male. Not much, like the female, because of the more ex- 

 tensive yellow markings about the side of the abdomen an 1 generally 

 yellowish orange. 



Head broader than the thorax. Face pale orange yellow, mainly 

 covered with the shining pale reddish yellow calli, two facial calli 

 leaving a narrow intermediate yellow stripe which widens out at its 

 top just under the antennae and which also usually widens out a 

 little at its lower end just above the mouth; at the bottom part of 

 eacli facial callus there is a deep pit, and beneath tint a fairly large 



