16 (l3). Rudimentary apex of mandible forming a larger process. 



Postsegmental plate of segment 5 with 23—28 denticles 



6. Semblis Fabr. (p. 56) 



1. Genus Agrypnia Curtis 



Full-grown larva. Length 18—25 mm. Median pattern of frontoclypeus 

 in form of a dark stripe, wider posteriorly, almost reaching the frontal 

 sutures; groups of dots laterally on the ventral side. Dark stripe in 

 anterior third of pronotum widened in the middle of each half, sometimes 

 extending to almost half the sclerite. 



Case with fragments of stalks of Gramineae or plant particles arranged 

 spirally. 



Pupa. Length 16— 22 mm. Anal lobes more or less pointed at the end. 

 Case, as in the larva, moderately long, with sievelike membranes. 



Mode of life and habitats. In vegetation of stagnant and slow water 

 bodies; often in eutrophic lakes. 



Distribution. USSR: European and Asiatic parts. In addition, Europe, 

 Asia, North America. 



Key to Species 

 Full-grown larva 



1 (2). Median pattern wider posteriorly but usually not reaching frontal 



sutures 1. A. pagetana Curt. (p. 18) 



2 (l). Median pattern jug-shaped, markedly wider posteriorly, almost 



reaching or reaching frontal sutures 2. A. pi eta Kol. (p. 28) 



Pupa 



1 (2). Labrum and anteclypeus about the same length. Case with reed 



fragments, rarely with spirally arranged particles 



1. A. pagetana Curt. (p. 18) 



2 (l). Labrum and anteclypeus wider than long. Case with spirally 



arranged particles 2. A.picta Kol. (p. 28) 



1. Agrypnia pagetana Curtis 



Ostwald, 1899: 78-80. - Struck, 1899: 197; 1900, Figure 2. - Siltala, 

 1902: 26-30, Plates I, II, Figure 60v. - Struck, 1903: 53-59, Plate I, 

 Figure 3.- Ulmer, 1903: 40.- Thienemann, 19G5b:547, Figures 4, 5, 17, 18, 

 122.- Siltala, 1905:19; 1907:441-443,445-446.- Ulmer, 1909:240, 303, 

 Figure 441b., 443b.. - Lestage, 1 921.: 565-571 , Figures 188, 190.- Lepneva, 

 1940:208.- Wiggins, 1960:1165, Figure 9. 



18 



