Distribution. USSR: European part, Middle Asia, Western and 

 Eastern Siberia. In addition, Europe, Mongolia, China, North America 

 (isolated occurrences). 



2. Agrypnia picta Kolenati 



Siltala, 1904c: 16-19, Fig. 4 : 1905 : 9-1 0, Fig. 2; 1907:440-441; 1908b: 11.- 

 Ulmer, 1909:240, 303.- Lestage, 1 921 : 556-557, 558, 565-571.- Lepneva, 

 1940:208. 



Full-grown larva. Larger than A. pa g et ana, length 23— 25 mm. Median 

 dark pattern of frontoclypeus wider posteriorly than in A. pa get ana, 



often occupying almost the whole posterior 

 area and reaching the frontal sutures 

 (Figure 18); dorsal stripes distinct, with 

 large dots; lateral stripes short, lateral 

 dots numerous. Ventral side of head 

 light anteriorly, with dark dots posteriorly. 

 Setae on body as in A. p a g e t a n a. 

 Number of gills on posterior abdominal 

 segments more constant than in A.page - 

 tana; lateral presegmental gills present 

 on segment 8. 



Case, in contrast to that of A. p a g e t a n a, 

 made mainly of large, not quite symmetrical 

 plant fragments arranged in a spiral, 

 sometimes 40 mm long; rarely part of a 

 stalk of Gramineae. 



Pupa. Length 17— 20 mm. Labrum and 

 anteclypeus slightly longer than wide. 

 Apex of mandible wider and more sharply curved than in A.pagetana 

 (Figure 19). Dorsal gills of segments 6 and 7 situated only postsegmentally; 

 presegmental lateral gills not always present on segment 8. Number of 

 spinules of holding apparatus: IV :0— 6; V:3— 11 + 10— 21; VI:6— 13; VII:5— 15. 



Pointed process of anal appendages of pupa less large than in 

 A.pagetana. Outer lobe of ventral appendages of male pupae almost 

 reaching end of body, median lobe smaller, indistinct, penis sheath wide. 

 Case as in the larva. 



Mode of life and habitats. Overgrown stagnant water, often in 

 swamps. 



Distribution. USSR: European part, central and northwestern zones; 

 southern Siberia, Amur region, Sakhalin, Kamchatka. In addition, Europe, 

 China, Mongolia. 



FIGURES 18and 19. Agrypnia picta 

 KoL: 



18 — head, dorsal; 19 — right mandible 

 of pupa, ventral. 



27 



2. Genus Agrypnet e s McLachlan 



Full-grown larva. Length 20mm. Head dark, with wide median stripe 

 on frontoclypeus, occupying almost the whole sclerite, or head light, with 

 bright dots on barely visible dorsal stripes. 



5725 



28 



