Claw (Figure 252) brown, with reddish brown, basal margin; apex reddish 

 black; dorsal denticle large, reddish brown, with 7—9 small, light spinules 

 basally; setae brown, except ventral setae; seta 1 situated subdorsally in 

 basal part, short, thick, reddish brown; seta 2 situated dorsally above suture, 

 thin, long; seta 3 situated on median side subdorsally in distal part, thick, 

 moderately long; seta 6 situated laterally near end of suture, short, thin, 

 dark brown; ventral setae 7 and 8 transparent, light, slightly curved; seta 5 

 small, light, situated laterally on outer side of 8; seta 4 situated medially, 

 short, thick, yellowish. 



.151 



253 



FIGURES 251-254. Nemotaulius pu n c t a t o li ne a t us Retz.: 



251 — tergite of abdominal segment 9; 252 — claw of left anal leg, lateral; 

 253 — larval case; 254 — anal rod of pupa. (253 - after Hickin; 254 — after 

 Siltala). 



151 



Case 30—36 inm long, made of plant particles of varying size, the smaller 

 in lateral walls, the larger in dorsal and ventral walls, consisting of large 

 overlapping pieces of leaves so that the anterior piece covers part of 

 posterior piece; dorsal row longer than ventral row, upper anterior leaf 

 larger than the others, with rounded anterior margin which projects beyond 

 the margin. When the larva comes out of tube, its anterior end is covered 

 by the projecting leaf. In late spring and in the first half of summer, a 

 period of intensive feeding and growth, fragments of the fresh vegetation 

 are added to the case; when vegetation dies in autumn, and in early spring, 

 the case is dark as the larvae spend these seasons on the bottom and use 

 fallen leaves as building material. However, the case retains its form. 

 The case sometimes consists of smaller and different fragments and is 

 more tubular. The case is rarely built of unusual material, e.g., large 

 spheres of Nostoc; such cases have a characteristic form. The change 

 in form of the case as a function of growth and according to the plant 

 material used is shown in Figure 253, and in Vol. II, Part 1, Figure 112. 



187 



