146 



10 (7). Pattern consisting of stripes, spots, and dots, or head almost or 



completely dark. 



11 (l2). Head completely dark; primary apical ventral seta of fore femur 



strong, twice as long as or more than basal seta, which forms alight, 



thick spine; case trihedral, made of flat plant fragments 



5. Phacopteryx Kol. (p. 291 ) 



12 (ll). Coloration of head variable; primary apical ventral setae of 



fore femur different, usually both spine-shaped; case made of 

 detritus, often bulky, or made of sand grains, smooth, sometimes 

 slightly curved 4. Limnophilus Leach (p. 214) 



1. Genus Nemotaulius Banks 



Distribution. Central, western, and northern parts of the European 

 USSR; Western and Eastern Siberia, Maritime Territory, Amur Region, 

 Sakhalin, Kurile Islands, Kamchatka. In addition. Central and Northern 

 Europe, Korea, Japan, North America. 



Key to Species 

 Full-grown larva 



1 (2). Pattern of head light; case made of fragments of leaves 



1. N.punctatolineatus Retz. (p. 180) 



2 (l). Pattern darker; case made of detritus fragraents 



2. N. admorsus McL. (p. 188) 



1.. Nemotaulius punctatolineatus Retzius (Glyphotaelius 

 pun ct at o 1 ine at u s Retzius) 



Degeer, 1778:403-405, Plate XIV, Figures 1-5.- Siltala, 1902:39-42, 

 Plate I, Figure 7, Plate II, Figure 7.- Struck, 1903: Plate VII, 4.— Ulmer, 

 1903:50.- Siltala, 1904c:32; 1907:492-495, 506, Figures Ilb-d, h-k, n-s. - 

 Ulmer, 1909:255-256, 314, Figure 383. - Wesenberg-Lund, 1910-1911 : 

 93-102. Figures 1-32.- Lestage, 1921 :712-722, Figures 247 b, c, d. g, h, j, 

 248, 250.- Lepneva, 1940:215, Figure 160, 1 and 2. 



Full-grown larva. Length 27.5—32.0 mm. Head (Figure 246, A) yellow, 

 with distinct brownish pattern; punctation coarse, light; sclerites with small 

 spinules. Frontoclypeus with uniformly narrow, brownish, longitudinal 

 median stripe with a characteristic, distinct, wedge-shaped pattern of light 

 dots posteriorly; punctation indistinct anteriorly; dorsal stripes uniformly 

 wide, brownish, extending from anterior margin to coronal suture and joining 

 there, forming a horseshoe pattern characteristic for the species; eyes at 

 level of tentorial pit near outer margin of stripes; antennae closer to 

 anterior margin than to eye, situated near nnedian margin of stripes; 



180 



