INSECUTOR INSCITI^ MENSTRUUS 95 



Abdomen about equal in width to pterothorax, sides deeply 

 longitudinally rugoso-reticulate ; segment 10 divided above ; 

 all bristles minute and scarcely visible, a dorsal pair near apex 

 of segment 10 more conspicuous than the others, slightly ex- 

 panded and truncate at apex. 



Measurements of holotype (female): Length 1.3T mm.; 

 head, length 0.174 mm., width across eyes 0.211 mm.; eyes, 

 length 0.0T8 mm., width 0.054 mm., interval 0.106 mm., dis- 

 tance from posterior margin of head 0.070 mm.; prothorax, 

 length 0.169 mm., width 0.328 mm. ; pterothorax, width 0.341 

 mm. ; abdomen, greatest width 0.348 mm. ; fore wings, length 

 0.768 mm., width at middle 0.000 mm., near base 0.046 mm. 

 Antennal segments : 12 3 4 5 6 7 8 



Length (n) 30 54 75 63 50 48 17 50 



Width ([i) 28 39 26 25 25 20 12 6 



Total length of antenna, 0.387 mm. 



Male (macropteroiis). — Length about 1.1 mm. Color and 

 structure essentially as in female, except as follows : Pro- 

 thorax brown, concolorous with head. Abdomen bright yel- 

 low, sides with blood-red hypodermal pigmentation ; sternites 

 3-7 each with a sharply delimited circular area at base ; seg- 

 ment 4 with a small, lateral, toothlike projection ; segment 10 

 with the lateral bristles simple, not dilated in the form of a 

 broad V. 



Measurements of allotype (male) : Length 1.08 mm.; head, 

 length 0.166 mm., width across eyes 0.203 mm. ; eyes, length 

 0.072 mm., width 0.048 mm., interval 0.108 mm., distance from 

 posterior margin of head 0.072 mm.; prothorax, length 0.152 

 mm., width 0.208 mm. ; pterothorax, width 0.300 mm. ; abdo- 

 men, greatest width 0.293 mm. ; fore wings, length 0.672 mm., 

 width at middle 0.081 mm., near base 0.045 mm. 

 Antennal segments: 12 3 4 5 6 7 8 



Length (^i) 27 51 70 54 47 40 16 48 



Width (n) 27 36 24 23 24 20 11 7 



Total length of antenna, 0.353 mm. 



Described from 15 females and 7 males collected as fol- 

 lows : 



