FIGURES 78-80. Semblis phalaenoides L: 



78 — tergite of abdominal segment 9; 79 — sclerite of anal leg and claw; 

 80 — larval case. (80 — after Siltala). 



Claw reddish brown, darker distally with 3 large dorsal denticles near 

 curvature, another 3 small denticles more basally. Seta 1 short, thick, 

 situated at the base; setae 2 long, situated near dorsal margin of membranous 

 bar; seta 6 situated on outer side; seta 3 long, situated dorsally above 

 the denticles; ventral setae 7 and 8 straight, thick, yellowish; seta 5 

 situated lateral to 8; seta 4 situated on other side of longitudinal 

 membranous stripe of base; both small and thin. 



Case to 70 mm long, slightly curved, narrower posteriorly, made of large 

 fragments of sedge, arranged in 5—6 turns (Figure 80). 



Mode of life and habitats. Small, stagnant or slowly running 

 water, often swampy. 



Distribution. Northern, western, central, and eastern (Urals) parts 

 of the European USSR, Siberia, the Maritime Territory, Sakhalin. In 

 addition. Northern and Central Europe, Mongolia, Korea, North China, 

 Japan. 



2. Semblis atrata Gmelin * 



Siltala, 1904c: 9-12, Figure 2. 



Full-grown larva. Length 25— 30 mm. Sclerites mainly brownish 

 yellow, pattern reddish brown, dots distinct, large; setae thick, black. 

 Head as in S. phalaenoides. Frontoclypeus (Figure 81 ) with posteriorly 

 wider median pattern, with a curved row of minute dots; 2 dark dots 

 situated medially to the median frontal setae; posterior frontal setae 



The species appears in the literature as Holostomis atrata. 



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