these teeth separated by space with a third blunt, short tooth. Outer setae 

 of mandibles almost of same length; basal seta slightly curved and brown, 

 second seta situated further apically, yellowish, light and strongly curved. 



(391 



FIGURES 539 and 540. Stenopsyche bergeri Mart, (after Lepneva and Levanidova): 

 539 — labrum; 540 — left mandible, ventral. 



Maxillolabium as in S. griseipennis; black and dark brown sclerites 

 more distinct on background of white or yellow membranous areas. Sub- 

 mentum brown at the base and laterally; other part of sclerite, including 

 anterior rounded process, brownish black; setae reddish brown; sclerites of 

 cardo, stipes and palpifer shining black in their greater part; their setae 

 blackish brown; hairs of galea yellow and reddish yellow. Sclerite of first 

 palp segment yellowish brown; sclerites of other segments dark brown. 

 Mentum dark brown. Ventral sclerites, sclerites of labial palpifer and labial 

 palps distinct, light brown. 



Pronotum (Figure 54 1) light yellow, with broad black posterior margin 

 and large black spot in the middle of the lateral margin; anterior angle with 

 a narrow dark brown stripe; posterior angle of sclerite as in S. grisei- 

 pennis, curved vent rally. Dots shown in Figure 541. Setae as in 

 S. griseipennis but darker; long anterior -margin setae blackish brown; 

 thick surface setae black. 



Propleuron light yellow, of the same form as in S. griseipennis, with 

 a narrower median and posterior margin in the ventral part; horn-shaped 

 process of trochantin light yellow, brownish at the base, with 2 small, thin, 

 light subapical setules; a small brownish seta further basally; epimeral 

 seta short and brown; pleural suture narrow, blackish brown. 



Sternite of prothorax as in S. griseipennis, black, its median part 

 narrower and divided near the anterior margin; posterior -angle processes 

 more strongly curved. 



Form and coloration of meso- and metathorax and their setae similar 

 in both species. The black rodlike sclerites of the pleuron, which are 

 bordered with brown, and their setae also similar; episternal part slightly 

 longer and narrower in S. bergeri than in S. griseipennis. 



437 



