236 



Case made of sand grains and small pieces of detritus, or entirely of 

 sand; case covered with fragments of reed stalks or other detritus, which 

 sometimes project far beyond anterior and posterior ends. 



Mode of life and habitats. Detritophagous, in littoral zone of 

 lakes, in slow, clear brooks, and near river mouths. 



Distribution. European USSR, Altai, Sayan foothills. In addition. 

 Central and Northern Europe, China, North America. 



Key to Species 

 Full-grown larva 



1 (2). Anterior part of frontoclypeus with 2 large dots which are 



narrower posteriorly; ventral surface light; labrum yellowish, 

 darker posteriorly in middle; western part of European USSR . . 

 2. A. nervosa Curt. (p. 303) 



2 (1). Frontoclypeus with different pattern; ventral surface, including 



gula, largely dark; labrum brown. 



3 (4). Frontoclypeus usually light anteriorly in middle; posterior seta 



of fore femur situated basal to primary ventral setae; case in 

 form of wide, straight tube with loosely attached sand grains; 

 rods on sides of case straight, thick, firmly attached, not or 



only slightly projecting beyond the case 



' 3. A. furcata Br. (p. 305) 



4 (3). Anterior median part of frontoclypeus partly or broadly dark; 



posterior seta of fore femur situated near basoventral seta; 

 case made of loosely attached sand grains, usually with pieces 

 of detritus among them; rods in dorsal side or sides often thin 

 (conifer needles), loosely attached, usually much longer than 

 case 1. A. soror McL. (p. 296) 



1. Anabolia soror McLachlan* (A n ab o 1 i a sororcula auctorum) 



Siltala, 1902:74-94, Figure 17. - Ulmer, 1903:62. - Siltala, 1904c: 

 60-61. - Siltala, 1907: 500 - 501, 507 - 510. - Ulmer, 1909: 257. - 

 Lestage, 1921:751-756, Figure 262. - Lepneva, 1940:215, Figure 159, 6. 



Full-grown larva. Length 18 — 22 mm. Main color of head yellow; 

 pattern distinct, variegated, variable, described here from moderately 

 dark specimens (Figure 417, A). Anterior margin of frontoclypeus grayish 

 brown, with 2 large dark dots laterally, an oblique row of 3 large dots 

 behind dots in anterior part, median dot sometimes consisting of 2 — 3 small, 

 fused dots; a large, median, dark area with a group of dots in middle of 

 anterior part; a large, dark dot behind tentorial pit; wedge-shaped pattern 



■> The synonymy established by Schmid (195,0: 310—311) is confirmed by the absence of data on the larva of 

 A. soror. The description of the larva of A. sororcula McL. by Siltala (1902: 74-94) refers therefore 

 to A. soror McL. Martynov (1924: 39) found among Petrograd specimens of A. sororcula a number 

 of larvae the "upper appendages" of which resembled those of A. soror. 



296 



