moderately long and thicker than the others; intermediate seta situated near 

 the median seta and almost as long as this, but thinner; lateral seta small, 

 thin, situated near the anterior -angle seta; lateroventral seta large, dark 

 and situated at the sides of the segment. Anal gills six in number, light 

 and with a delicate pattern of brownish dots. 



Anal legs (Figures 320 and 32l) short and broad; dorsolateral sclerite "b" 

 strongly convex, with large dots and well-marked grooves; mediodorsal 

 margin broad and reddish brown; basoventral hook with a black base and a 

 reddish tip; basoventral sclerite black, with a reddish brown, slightly curved, 

 strong, spinelike terminal process; seta light brown, relatively large. Distal 

 sclerite of the dorsal part of the sclerite situated at an almost right angle 

 to the median sclerite, dark brown in its greater part; it is indented distally 

 but has no tubercle; outer seta relatively long; second distal seta situated 

 in the mediobasal angle of the sclerite, short and brown; seta of the middle 

 part also short but thicker and situated on a ridge. Ventral plate of 

 sclerite "c" small and yellowish; seta reddish brown, short and strong; 

 outer plate large, irregularly triangular, reddish brown, with a dark dorsal 

 stripe. 



Claw (Figures 320 and 321) with abroad massive basal part, curved in the 

 distal part, narrowed at the end, with 3—4 strong ventral spines; seta 1 

 285 situated at the base, thin, yellowish, small; seta 2 situated above the suture, 

 in form of a short, reddish brown, thick and weakly curved, blunt spine which 

 is slightly flattened and movably articulated in its pit; seta 3 situated 

 dorsally, further distally, above the suture, and long; outer seta 5 similar 

 but darker; seta 6 markedly shorter; ventrally, in the basal part stand the 

 light, thick setae 7 and 8; seia 8 situated on a tubercle, curved, longer than 

 seta 7 and divided; on the inside, nearby is the thin light and similarly long 

 seta 4. 



Young larva. Second-stage larva 7 mm long, with branchial stalks, 

 but no filaments on the thoracic and abdominal segments; as always in 

 young larvae, the setae (including the 3 pleural setae at the tip of the stalk 

 of the gills) are relatively long. 



Pupa. Unknown; pupal case built before pupation from large sand grains 

 and a few small stones; widely open ventrally, with relatively smooth walls 

 and numerous openings. 



Mode of life and habitats. Cold-water streams in high 

 mountains. 



Distribution. USSR: mountains of Middle Asia. 



2. Himalopsyche sp. "larva hopiura" Lepneva * 



Lepneva, 1945:72-73; 1960:107-108; 1963:64-66. 



Full-grown larva. Closely related to H. gigantea in general habitus 

 and a number of characters; smaller, length 20—22 mm; head not so short, 

 slightly longer than broad. Mandibles with only one basal tubercle above 

 the acetabular pit (Figure 322); small tubercles on the outer side of the 



* The larva described as Himalopsyche sp. "larva hopiura" possibly belongs to H. kuldschensis Ulm. 

 from the part of the Dzhungar Ala Tau adjacent to the USSR and from West Tibet and Pakistan (Lepneva, 

 1958a-.40-42; Schmid, 1958:220). 



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