serrated; a wide, rounded process present instead of molar tooth. In 

 addition to the apical tooth, right mandible with 1 tooth on upper blade and 

 2 teeth on lower blade; a rounded process basal to these teeth. Outer side 

 of mandibles with numerous setae; 2 primary setae long and thicker than 

 others on left mandible; 4 or 5 thick, long setae on the right mandible. 



Gula triangular, fused with pregula. Submentum (Figure 765, B) rounded 

 laterally with 2 dark tubercles anteriorly and 9—11 strong, long setae, 

 including a primary seta, which is indistinguishable from others near the 

 margin. Cardo yellowish, with 2 small setae near base. Stipes in form of 

 a thin yellowish plate; tufts of numerous, thin setae basally and apically on 

 a membrane near plate. Palpifer light yellow; 1 small seta distally and in 

 the middle; palpal segments short; 3rd segment longer than others; galea 

 short, narrower apically, with relatively large rods and setae. Mentum in 

 form of narrow, dark band. Labium conical; ventral sclerites in form of 

 dots with a small seta; palps rudimentary. 



[544) 



FIGURES 766-768. Aethaloptera rossica Mart.: 



766 — dorsal setae of thorax: pronotum (A), mesonotum (B), metanotum (C); 767 - pleu- 

 ron of prothorax; 768 — sternite of prothorax. 



543 Nota of thorax light, without pattern. Pronotum (Figure 766, A) yellow, 

 shorter than meso- and metanotum, with narrow, brownish anterior, lateral 

 and posterior margin; anterior margin slightly concave in the middle; 

 posterior angle black. Small hairlike setae at anterior margin, small, 

 sparse, covering chetae on surface, larger, divided chetae among them. A 

 small, thick seta anteriorly near median suture and in middle of each half; 



621 



