relatively thick, like seta 1, with long, thin, transparent end; seta 11 distant 

 from 9, situated medial to eye, small, very thin; seta 10 situated lateral to 

 antenna near anterior margin of periocular spot, short, brown; seta 12 short, 

 thin, dark, situated behind eye; seta 14 situated medially, brown, long, thick, 

 slightly shorter than 9; seta 15 situated some distance behind 14, thin, long, 

 brown; seta 13 situated laterally nearby, short, light; seta 17 situated lateral 

 to fork, slightly behind fork among light dots, brown, moderately long, thick, 

 similar to 14 but shorter, adjacent pit close to coronal suture; seta 16 

 situated lateral to 17, short, thick, brown. Ventral seta 8 brown, thin, dark, 

 short; seta 18 small, very thin, light. 



Labrum (Figure 601, D) wide, with narrow membranous margin; dorsal 

 sclerite brown, median indentation shallow, median pit near anterior margin 

 situated at level of seta 4; posterior angle sclerites wide, curved inward; 

 seta 1, as in Limnophilinae, in form of small, light, thick, blunt spine, situated 

 on membrane; seta 4 situated at anterior margin, larger than 2, light, curved 

 inward; seta 3 situated at anterior angle, straight, light, larger than 4; 

 setae 5 and 6 situated behind median pit, darker brown, widely separated. 



Mandibles short; basal part black, massive; apical part pinkish brown; 

 median tooth of both mandibles large; dorsal blade of left mandible with 

 2 teeth, ventral blade with one distinct and one small, indistinct tooth; right 

 naandible with 2 teeth on dorsal and ventral blade, in addition to median 

 tooth; brush short, tuftlike, situated at dorsal margin, basal chaetoids longer 

 than apical chaetoids; lateral setae situated basally, dorsal setae short, 

 yellowish; ventral very small, thin, light. 



Sclerites of cardo mainly black, with a narrow, reddish brown stripe at 

 posterior margin and in middle of anterior margin; seta relatively large, 

 thin, yellowish, second (lateral) seta very thin, small. 



Sclerites of submentum small, yellowish, indistinct; seta at distal margin 

 brown, moderately long. Stipes yellowish, with small, reddish brown, median 

 stripe; setae brown, lateral seta moderately long, median seta short, thin. 

 Palpifer brown; distal seta situated on membrane, reddish brown, relatively 

 large, reaching apex of palp; median seta small, blunt, light, relatively thick; 

 galea short, wide, domelike. Maxillary palps short; segments 1 and 4 

 slightly larger than 2 and 3; sclerites of first 3 segments brown, of last 

 segment yellowish. Mentum represented by a uniformly narrow, reddish 

 brown semicircle; ventral sclerite small, with light seta; sclerite of 

 palpiger in form of a broad horseshoe. 



Pronotum (Figure 602) uniformly chestnut brown, with large, light spots 

 in middle of posterior margin and in each half; 1—2 smaller spots laterally; 

 anterior margin narrow, brown; lateral margin darker, reddish brown; 

 posterior margin wide, mainly chestnut brown, with a distinct, brownish stripe 

 anteriorly; lateral margin broad, black, posterior margin blackish brown 

 in middle and with a large, black spot connected by a narrow, dark brown 

 stripe with black lateral margin. Setae brown and dark brown, as in 

 Figure 602. 



Mesonotum (Figure 603, A) wide, mainly chestnut brown, lighter at median 

 suture, whitish brown at posterior margin; each half slightly longer than 

 wide, with large, light dots. Primary setae thin, strong, grayish brown, 

 moderately long; secondary setae light, few, most of them small. 



439 



