201 



consisting of large dots. Dorsal stripes narrow, not reaching frontal 

 sutures, reaching coronal suture near occipital foramen; dots on stripes 

 not always distinct; lateral stripes dark only anteriorly; large dots on lateral 

 stripes and in space between them. Ventral surface (Figure 344, b) 

 whitish yellow, slightly laterally dark in anterior part, with large groups 

 of dark, distinct dots, near occipital foramen, 2 anterior dots large, dark. 

 Gula light, yellowish. Seta 14 longer than others; seta 9 also long, thick, 

 both blackish brown; setae 15 and 17 thin, long, almost as long as seta 9. 

 Dorsal sclerite of labrum (Figure 345) golden brown, with a dark spot 

 behind median pit. Mandibles black, reddish brown near distal margin; 

 left mandible with 5 teeth, middle tooth situated separately and larger than the 

 others, 2 small, basally fused teeth, dorsal to it, 2 teeth ventral to it; dorsal 

 blade with large denticle distal to the brush; right mandible with 5 teeth, 

 subventral tooth larger than others, 3 teeth dorsal to it. 



(202) 



Z^6 



3«7 



FIGURES 344-347. Limnophilus borealis Zett.: 



344 - head, dorsal C A) and ventral (B); 345 - labrum; 346 - pronotum; 347 - thoracic horn 

 and sternites. 



5725 



252 



