arc-shaped than heart-shaped, with a transverse row of three light spots 

 (Figure 204). Dorsal stripes distinct, not fused with the lateral stripes; 

 they are not very dark, especially in the posterior part; lateral and dorsal 

 stripes with distinct, large, dark dots. Space between dorsal and lateral 

 stripes (in which setae 15 and 16 are situated) of the same light color as 

 the anterior part of the head. Setae not as dark as in Rh. septentrionis 

 and Rh. obliterata, reddish brown. Labrum and mandibles as in the 

 other two proceding species. 



Pronotum (Figure 205) mainly light; dark figure in its posterior part 

 with dark dots; spots in each half of pronotum are not so large as in 

 220 Rh. septentrionis and Rh. obliterata; they are slightly dark and 

 bear large, distinct dots; the curved row of dots of the anterior part of the 

 pronotum is indistinct. 



FIGURES 205 and 206. Rhyacophila cupre ssorum Mart.: 



205 — pronotum; 206 — metathorax, and abdominal segments 1 and 2, 

 lateral. 



229 



