FIGURES 284 and 285. Rhyacophila narvae Navas: 

 284 - left foreleg, anterior; 285 - right hind leg, anterior. 



Legs yellowish brown, without dots; forelegs more massive than midlegs 

 and hind legs (Figures 284 and 285). As in Rh.sibirica, the notch on the 

 distodorsal side of the coxae is not as deep as in species of Rhyaco- 

 phila s. str.; most setae of the legs black or blackish brown; small setae 

 brownish or light. Coxa of the forelegs (Figure 284) with a broad dark 

 basodorsal margin; both anterodorsal setae strong, black and moderately 

 long, basal seta larger; posterodorsal seta longer and thinner; anterior 

 surface setae small and spinelike; anterior seta of the 2 ventral setae, 

 transparent and very small, the seta posterior to it dark and slightly larger, 

 Of the three dorsal setae on the coxa of the hind legs and midlegs, the basal 

 seta is short and thin, the other 2 are dark and long, longer than those of 

 the forelegs; small anterior surface setae straight and thin; both ventral 

 setae small and light. 



Trochanter with a less wide membranous area than in species of 

 Rhyacophila s. str.; sclerites of the trochanter not closed at the dorsal 

 end; blackish brown on the forelegs and brown on the midlegs and hind 

 2 65 legs; anterior and posterior setae of forelegs short and spinelike, long on 

 the midlegs and hind legs (Figure 285); 3 anteroventral setae small and 

 light; distal seta of this group curved; posterodistal seta dark and long, 

 about as long as the anterior and posterior seta, longer than these two setae 

 on the forelegs; second posterior seta situated ventrally, short and light. 



283 



