64 



Pipunculidae. 



Fig. 33. Verrallia 



aucta (J . 



Head in profile. 



bristles smaller. Eyes practically bare, in the male the facets a little 

 enlarged, decreasing evenly in size towards the hind margin, in the 

 female they are more enlarged just in front, around the antennæ. 

 Antennæ (fig. 36) inserted in the middle of the 

 head near to each other, the third joint irregularly 

 oval, rounded below, the second with numerous 

 long hairs above and below, longest below. Epi- 

 stoma as in Chalarus but longer, and likewise 

 raised above the level of the eyes. The mouth 

 parts I have not been able to examine, but no 

 doubt they are mainly as in Pipunciilus. Thorax 

 quadratic, a little arched above, the humeral 

 knob slightly visible as it is lying on the front 

 side; the disc with longish hairs, shorter in the 

 female; among the hairs two posthumeral, a 

 notopleural, a supraalar and two postalar bristles are visible, as also 

 a pair of dorsocentral bristles behind; at the margin of scutellum 

 four or more bristles or strong hairs; on account of the shorter hairs 

 the bristles are more conspicuous in the female than in the male; 

 propleura with some small hairs and mesopleura with dense, longish 

 hairs behind the suture. Abdomen (fig. 34) 

 somewhat flattened, a little narrowed behind; 

 in the male there are six not transformed 

 dorsal segments, the sixth being small, and 

 there are five not transformed ventral seg- 

 ments, the sixth ventrite being unsymme- 

 trical, only developed on the left side. The 

 genitalia are otherwise constructed mainly 

 as in Pipunculus or especially as in Chalarus; 

 on the left side the seventh segment is 

 present, but of this only the tergite is seen, 

 bending down on the ventral side and only 

 occupying the left half part of the breadth; 

 the eighth segment, whicli is formed quite 

 as in Chalarus^ has no apical impression; it 

 consists, seen from above, of a somewhat 

 triangular piece on the left side and a somewhat elliptical, longitud- 

 inally compressed part on the right side, stretching more forwards 

 up along the right side of the seventh segment; the two parts are 

 separated by a longitudinal furrow or split; on the right side below 



Fig. 34. W. aucta ^ ; 

 abdomen from above; 7 

 and 8 seventh and eighth 

 segment. 



