4 (7 



5 (6 



6 (5 



7 (4 



8 (11 



9 (10 



10 (9 



11 (8 



12 (l 



13 (14 



14 (13 



15 (16 



16 (15 



17 (18 



18 (17 



Pupae situated in a thick, shining brown cocoon with elastic walls 

 filled with fluid; cocoon is attached to the walls of the case at 

 anterior and posterior ends; case has strong walls consisting of 

 small stones and large sand grains with an open ventral surface; 

 margin of the case attached to the substrate. 



Pupae 10—20 mm long, rarely less than 8—10 mm long; seta 1 of 

 lab rum not shorter than the others; number of spurs on legs, 3, 4, 4; 



case 12— 30 mm long I. Rhyacophilidae Steph. (p. 215) 



Pupae 3.5— 8.0 mm long; seta 1 of labrum markedly smaller than 

 the other 5; number of spurs on legs 2, 4, 4; case 5—10 mm long 



II. Glossosomatidae Wall. (p. 322) 



Cocoon consisting of gray, loosely woven tissue; case of different 



appearance; if it has the same appearance, it is large. 



Mandibles massive, cutting; blades of mandibles with several 



large teeth or serrated. 



Pupae medium sized (to 18 mm long); mandibles geniculate at base, 



with several large teeth distally; case woven of loose tissue with 



a covering of sand grains or small stones 



. IV. Philopotamidae Steph. (p. 408) 



Pupae large, to 30 mm long; blade of mandibles serrated, without 

 denticles; case large, elliptical; walls strong, consisting of large 



and small stones V. Stenopsychidae Mart. (p. 423) 



Mandibles prolonged into a thin, long, filiform process, curved at 



the end VI. Psychomyiidae Kol. (p. 440) 



Tracheal gills present except in 1 family; anal appendages with 

 numerous setae, rounded, lobe-shaped or in form of short, thick 



rods II. Superfamily Neochaetoidea Lepn. (p. 465) 



Mandibles with straight, pointed distal part, without teeth; tracheal 

 gills absent; anal appendages small, rounded; their setae are not 



as numerous as in the following families 



VII. Ecnomidae Ulm. (p. 465) 



Mandibles sickle- shaped, without teeth, or of a different form, with 

 large and strong teeth in the distal part; tracheal gills present. 

 Mandibles narrow, sickle-shaped, without teeth, with 2 outer setae 

 at the base; tracheal gills with 2 filaments; anal processes short, 



lobe-shaped, with numerous setae posteriorly 



VIII. Polycentropodidae Ulm. (p. 472) 



Mandibles massive, with large teeth on blades; outer setae 

 primary and secondary; tracheal gills in form of a small rod with 

 5—30 filaments; anal appendages forming long lobes or broad rods 

 with short, strong setae along their whole length. 

 Gills in form of a short cylindrical stalk with apical filaments . . . 



EX. Arctopsychidae Mart. (p. 528) 



Gills in form of a long rodlike stalk with filaments their whole 

 length X. Hydropsychidae Curt. (p. 543) 



I. Superfamily PALEOCHAETOIDEA Lepneva 



Full-grown larva. Length 2.5— 40.0 mm. Primary chaetotaxy pre- 

 dominant. Secondary chaetotaxy little developed, mainly on the pronotum; 

 sclerite "b" of the anal legs without secondary setae or with only a few 

 secondary setae. 



214 



