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 sss= I II Ill IV TeV VI VE - Wai 
len ether eee 2.33 4 455 4 4,16 5,67 I 2 
AWIGGhY eee eee 3,6 3 2,33 2,33 2533 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 4/4 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 JI—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. 
