(233) 



FIGURE 226. Rhyacophila f or c ip ul a t a Mart. Head, 

 dorsal 



Dorsal sclerite of labrum brownish yellow; the large setae 2, 5 and 6 

 brown; setae 1,4 and 3 transparent. Mandibles massive, black, short, with a 

 blunt apex; lower blade of left mandible not serrated, basoventral seta 

 brown and straight; distodorsal seta shorter, curved and light. 

 233 Pronotum with a black posterior margin; this margin is broader in the 

 middle of each half of the sclerite but has no brown cross stripes; posterior 

 angles of the sclerite long and black; posterior third of lateral margin black, 

 the other part is golden brown, with a narrow stripe; anterior angles with a small 

 dark brown spot lateral to the light notch. Sclerite whitish yellow in the 

 middle, in the anterior quarter and the greater part of the sides; dark part 

 of sclerite smoky brown, with small reddish brown dots in a row along the 

 median suture, at the sides of the posterior part and along the curved 

 stripe of the anterior part. The 2 large anterior -angle setae in the light 

 notch (one primary and one secondary) are brownish black and long but 

 shorter than the sclerite; the seta between them is light; a small dark spot 

 nearby bears 3 small yellowish setae; of the small light setae at the 

 anterior margin, the seta situated in the middle of the half of the sclerite 

 is longer than the others and dark. The surface seta in the middle is 

 slightly longer, brownish black; the second surface seta is shorter, and 

 also dark; light spots at the base of both setae; the 3rd seta in the lateral 

 region is small and pale; small light setae near the base of the first 2 setae; 



244 



