402 



middle setae. Posterior half of head with a broad dark transverse stripe, 

 or this stripe interrupted on the frontoclypeus. Mandibles short and 

 massive; outer setae not situated in the middle of the mandible as in 

 Tinodes but nearer the basal margin. Ligula of labium longer than 

 maxillary palps. Pronotum dark except for a light stripe at the anterior 

 margin; light dots in the anterior part of the base of the setae. Anal legs 

 with 6 long apical setae and a short subapical seta; claw without ventral 

 spinules. 



Pupa. Mandibles with straight, serrated middle part of the blade and 

 hooklike apex. Spurs of fore and mid -tibiae pointed, spurs of hind tibiae 

 blunt. Presegmental plates present on segments 2—8. Last body segment 

 deeply divided, with long, tapering lobes with 8 stiff apical setae. 



Mode of life and habitats. Running water, living in long tubular 

 tunnels of loose tissue. 



Distribution. European USSR: northwest, west and central region. 

 In addition, Europe, Africa (rare), Iran. 



Key to Species 

 Full-grown larva 



1 (2). Frontoclypeus brownish, with a transverse row of 3 dark brown dots; 



narrow dark stripes lateral to the sclerite, which are contiguous with 

 the fused dark dorsal and lateral stripes; area lateral to the coronal 

 suture, near the bifurcation of the frontal sutures light brown, with 

 dark dots 1. L. phaeopa Steph. (p. 451) 



2 (l). Frontoclypeus dark posteriorly; dorsal and lateral stripes fused; 



they form a dark broad band in the posterior half of the head 



together with the dark part of the frontoclypeus 



2. L. reducta Hag. (p. 453) 



1. Lype phaeopa Stephens (Lype sp.) 



Siltala, 1905:138-140, Figure 37.- Lestage, 1921:524, 527, Figure 174.- 

 Hickin, 1954:93-95.- Botosaneanu, I952b:907-917, Figures 7-11. 



Siltala (1905) described the larva of Lype sp.; he placed it in this 

 genus because of the large differences from the larvae of Tinodes and 

 Psychomyia and because he found many adults of Lype at the banks of 

 streams inhabited by these larvae. Following McLachlan (1874—1880: 

 423-425), Siltala (l908b:9) recorded 3 species of Lype from Finland: 

 L. phaeopa Steph., L. reducta Hag. and L.sinuata McL.; McLachlan, 

 who described L. sinuata from Finland, examined only a few specimens; 

 Sahlberg (1893:16) thinks that L.sinuata is a variety of L. phaeopa. 

 Only the 3 preceding species of Lype (2 species according to Sahlberg) 

 have been recorded from Finland or adjacent countries. Martynov (1928:6, 

 1934:198), who knew the Trichoptera of Karelia well, recorded only 

 L. phaeopa. This species was recorded by Siltala (1905:135) as common 

 in the localities studied. In view of the rarity of L. sinuata and the 



451 



