272 OLOF AHLBERG 



palpi 3-segmented; segments II and III nearly equally long and together 

 somewhat longer than I. 



Antennae (fig. i c) 8-segmented, a little more than twice as long as the 

 head, inserted as mentioned above; relative measurements of segments: 



segment I II III IV V VI VII VIII 



length 2.33 4 4,5 4 4.16 5.67 I 2 



width .. ..._ 3.6 3 2,33 2,33 2,33 2,33 I 0,67 



Segment I nearly cylindrical; the other segments, except the 2 terminal ones, 

 pedunculate; III, IV and V constricted at the top; VI gradually tapering from 

 the middle. Segment II lightest in colour; II — V becoming gradually darker 

 brown; I almost as dark as IV; VI, VII and VIII nearly quite as dark as V. 



Pronotum wider than long (11:7), a little wider posteriorly, wider and 

 somewhat longer than the head; sides arched; posterior angles broadly rounded; 

 bristles minute and somewhat irregularly placed, each angle, however, with a 

 stouter bristle, curved inwards, and in the middle of each side 2 such similar ones. 



Meso- and metanotum distinctly separated from each other, provided with 

 small transverse wrinkles. Mesonotum wider posteriorly, as wide as pronotum, 

 but only '^U as long; along the posterior edge 10 short bristles, the lateral of 

 which is stout and placed at the posterior angle. Metanotum twice as long as 

 the mesonotum, anteriorly as wide as this, but posteriorly about ^/4 wider; 

 along the posterior edge 8 small bristles. Meso- and metasternum provided 

 with several very small hairs and one minute bristle immediately before each coxa. 



Wings or wing-rudiments quite absent. • 



Legs stout, unarmed. Femora and tibiae provided with longitudinal rows 

 of small bristles. Colour brown; trochanters, tibiae, especially the anterior 

 ones at base and top, and tarsi yellow. 



Abdomen as mentioned, very wide, increasing from base, which is as wide 

 as the mesonotum, to segment V, and after that tapering to tip. The first 8 

 tergites are provided with transverse rows of 10 — 12 bristles, which curve 

 inwards and become a little longer and stouter backwards. On the first tergite 

 the row consists of only 10 bristles near the posterior edge; on the other 

 tergites the row is placed near the middle and consists of 12 bristles, except 

 on the eighth tergite, where there are only 10 bristles. The lateral bristle is 

 always inserted in front of the other ones. Between the first and second 

 bristle from the median line there is on each tergite a little circular, quite 

 hairless, point shaped, light spot. 



First sternite without bristles, second sternite with only 2 bristles in the 

 middle of the posterior edge; sternites II — VI with transverse rows of 6 bristles 

 each, along the posterior edge. The lateral bristle in each row stands at the 

 posterior angle; a similar bristle is to be found in the upper posterior angle of 

 each ventral pleurite, except in the two first ones. The eighth sternite with 2 

 bristles on both sides of the ovipositor. • 



The ninth tergite provided with 4 stout and prominent spines; the sternite 

 with several shorter and weaker ones, 3 of which, however, are nearly as stout 

 as those of the tergite and also standing on each side along the posterior edge. 



