segments 1—8, only dorsally segment 1, in dorsal, pleural, and ventral rows 

 on following segments; dorsal gills situated on sides of the segment, 

 pleural gills on a tubercle below lateral line, ventral gills situated slightly 

 medially; gills of segments 1—6 with 3 filaments; with 2 filaments in 

 pleural and ventral rows on segment 8, with 2 or 3 filaments in same 

 position on segment 4 and dorsal side of segment 8. 



Number and a 



rrangement of gills of A. pa Hid us 





7 



3(2) 



3(2) 



3(2) 



8 



3(2) 



2 



2 



Segment 9 with a large brown tergite; medioanal setae thick, long, dark, 

 situated at posterior margin; anterior -angle setae similar but shorter, 

 also at posterior margin; intermediate and lateral seta small, thin, situated 

 between aforementioned setae together with a similar thin seta; lateral 

 ventral seta situated laterally, thick, short, strong; intermediate ventral 

 seta similar, median ventral seta small, thin. 



Anal legs, short, thick, directed laterally. Sclerite "b" surrounding anal 

 leg dorsally, laterally, and partly on ventral side; with 4 thick, long, dark 

 brown, distodorsal setae. Sclerite "c" slightly lighter, with a short, thick, 

 dark seta. Claw short, strongly curved, with a small dorsal denticle; seta 

 1 short, thin, situated dorsally; seta 2 slightly longer, situated more laterally 

 than usual; seta 3 situated dorsally in distal part, long, thick, dark, much 

 larger than other setae; seta 6 laterally situated in distal part, thin, similar 

 to seta 2; seta 4 similar, situated basally near suture; setae 7 and 8 

 shorter, curved, dark; seta 5 small, situated laterally near seta 8. 



Case flattened, made of 2 leaf fragments, an upper and lower, connected 

 at sides; upper leaf longer, and usually slightly wider than lower leaf; 

 anterior end projecting. Larva uses either fresh, green leaves of aquatic 

 plants or decayed, black leaves. Length of case 20—26 mm, width 8—10 mm 

 (Figure 66 1). 

 404 Mode of life and habitats. Calm, sunlit creeks of slow rivulets; 

 among vegetation, on a bottom with abundant detritus, or on snags. 



Distribution. USSR: Maritime Territory. Not recorded outside the 

 USSR. 



2, Genus Ganone ma McLachlan 



Only one species occurs in the USSR. 



Distribution. USSR: Maritime Territory. In addition, Africa, Asia, 

 Sunda Islands, North and South America. 



506 



