Pronotum also yellowish brown, with dark brown dots in a longitudinal 

 row near the posterior half of the median suture and two large lateral 

 groups. Claw of the holding apparatus bears two small spinules ventrally. 

 2 77 Pupa. Mandibles almost symmetrical; right and left mandible each with 

 two teeth, situated in about the middle of the mandible; distal tooth and 

 distal part of mandible serrated. 



Mode of life and habitats. Mountain brooks, 

 under stones. 



Distribution. USSR: near the southwestern 

 boundary. In addition, Europe. 



FIGURE 309. Rhya- 

 cophila philopo 

 tamoides McL. 

 Head and prothorax 

 (after Thienemann) 



2. Genus Himalopsyche Banks 



Full-grown larva. Large, 30—32 mm long. Head, 

 thorax and abdomen dorsoventrally flattened; thorax 

 broader than abdomen; body of full-grown larva tapering 

 posteriorly from the metathorax, like the body of the 

 young larva. 



Head short; head slightly broader than long; fronto- 

 clypeus broad; curvature of frontal sutures sharply 

 marked; lateral anterior -margin seta situated inside 

 and not laterally to the frontal suture. Gular suture 

 not longer than coronal suture. Dorsal setae of head short and partly 

 spinelike. Mandibles massive, with projecting basal tubercles on the 

 outside; serration present on both mandibles. Submentum with almost 

 straight anterior and posterior margin; setae are situated in about the 

 middle of the sclerite; 2nd segment of the maxillary palps shorter than 

 1st segment. Pronotum broad, with a longitudinal row of secondary setae 

 on both sides of the median suture; primary anterior -angle seta short. 

 Meso- and metathorax with conical tracheal gills. Forelegs more massive 

 and longer than the midlegs and hind legs. 



Tracheal gills on the sides of abdominal segments 1 — 8 with a conical, 

 long stalk and numerous gill filaments on the dorsal side. Setae of 

 abdominal segments and of meso- and metathorax small, thin and dark. 



Anal legs short; dorsal seta of the basal part of sclerite "b" shorter than 

 both setae of the distal part. Claw with characteristic flattened seta 2. 



Mode of life and habitats: Mountain brooks and rivulets, 

 including large high-mountain streams fed by snow. 



Distribution. USSR: mountains of Middle Asia. In addition, Central 

 and southern Asia, Japan. 



Key to species 



Full-grown larva 



1 (2). Larvae 30—32 mm long; head slightly broader than long; legs with 

 a distinct pattern of stripes and dots; the forked process of 

 sclerite "c" of the anal legs absent .... 1. H. gigantea Mart. (p. 299) 



298 



