the left mandible, and 14 or 15 on the right mandible; there are also several 

 small light hairlike setae. 



Pregula fused with gula; anterior margin of sclerite slightly projecting 

 anteriorly. 



FIGURE 668. Arctopsyche la doge nsis Kol. Setae of dorsal side of head 



Cardo with 9 thick brown setae and several thin light setae at the base 

 and laterally. Submentum (Figure 666, B) brown, trapezoidal; anterior 

 margin of submentum slightly concave; a tuft of 5 or 6 dark brown, thick 

 setae and 4 or 5 thin, light setae near the anterior angles; a longitudinal 

 row of small, light setae parallel to the lateral margin. Apical margin of 

 stipes dark brown, a dark stripe at the base; primary lateral seta replaced 

 by 2 thick, dark brown and 6 short, thin, brown setae; a group of 8 or 9 setae 

 nearby; 2 thick and 2 small, thin setae in the middle. Membrane near distal 

 margin with a group of small setae. Palpifer dark brown laterally, lighter 

 in the middle; distal seta short and brown, thick, situated not on the 

 membrane, as usual, but on the sclerite, near the margin; second (median) 

 4 68 seta light, small, situated near the basal margin; short light hairs present 

 on the membrane. Maxillary palps short, narrower apically; first segment 

 broader than the others. Galea small, adpressed to the palp, with dark 

 brown sclerite and light yellow setae and hairs. Mentum relatively long, 

 brown, with a dark brown band; apical part of labium hemispherical and light; 

 ventral rods absent; the setae replacing them light; labial palpifer light 

 brown on the outer side; labial palps very small; short, light hairs present 

 at the end of the labium, around the opening of the spinning glands. 



Pronotum wide, covering also the sides of the segment. Pronotum mainly 

 reddish brown, with a whitish yellow median stripe along the suture, yellowish 



532 



