509 



FIGURES 718-722. Cheumatopsyche lepida Pict.: 



718 - head, dorsal; 719 - head and pronotum, lateral (diagrammatic); 720 - covering 

 setae of head; 721 - labrum; 722 - mandibles, dorsal: left mandible (A), right man- 

 dible (B). 



Pronotum golden brown, of the same form as in Hydropsyche; anterior 

 margin brownish; lateral margin narrow, black; posterior margin narrow, 

 slightly darker and broader in middle and near posterior angle; sclerite 

 with large, indistinct, light spots. Short, brown, dense, strong setae at 

 anterior margin; among these, thin, whitish, hairlike setae, which become 

 gradually longer toward median suture, in the middle of each half; median group 

 of white chetae only slightly smaller than sclerite (Figure 723, A); these soft, 

 hairlike setae, with similar setae along frontal sutures, form a horseshoe- 

 shaped crown above the head. The following setae are well marked: strong, 

 brownish, anterior-angle seta, the long, yellowish, medioanal seta and 2 short 

 light setae laterally in anterior part; covering setae small; those near the 

 base are thick, with long transparent, filiform end; some very small setae 

 divided; covering setae sparser posteriorly and anteriorly. 



Meso- and metanotum yellowish white; dots indistinct, grayish; narrow 

 lateral margin and median spot on both sclerites reddish brown; oblique 

 stripes of anterior-angle region more distinct on metanotum than on meso- 

 notum; covering setae not divided, setae on metanotum sparser than on 



583 



