526 



margin sclerotized, with a narrow stripe of small, reddish brown covering 

 setae; a long, dark, medioanal seta laterally and 2 light setae near it; 

 2 long dark setae laterally and posteriorly. Sides of segment with a dense, 

 longitudinal group of numerous setae in the pleural region; outer longi- 

 tudinal row of setae of anal legs is a continuation of this group. Trans- 

 verse anal slit with 5 light, anal gills. Ventral side with triangular, 

 yellowish sclerites as in Hydro psyche; however, these sclerites are 

 smaller and bear light, strong setae, which are long posteriorly. 



Anal legs (Figure 738) small, short, smaller than in Hydropsyche; 

 claw moderately long. Laterodorsal sclerite of section "b" yellowish brown, 

 shining, smooth dorsally, with several sparse, small covering setae in some 

 places; mediodorsal margin of sclerite without setae; a longitudinal group 

 of long golden brown setae on outer side, in marginal lateral stripe from 

 base to apex. The 14—16 similar setae medially on membranous surface 

 reach apical margin of the leg; 6 thin, yellowish setae at the base on 

 ventral side; 2 of these setae long; a row of 8—10 short, golden brown setae 

 ventrally near outer margin; this row does not reach the base. One large, 

 dark brown seta dorsally near base of the articular rods; 3 or 4 similar 

 long setae lateral to these setae, on the outer side at apical margin and on 

 a membrane at the place of the distal fan of Hydropsyche and Arcto- 

 psyche. Sclerite "c" brown, with a light, long, curved seta. 



FIGURES 740-742. Macronema radiatum McL. Pupa: 



740 - labrum; 741 - mandibles, dorsal: left mandible (A), right 

 mandible (B) ; 742 - end of tibia and tarsus of midlegs. 



601 



