Setae of labrum thin, light; the small seta 1 is situated near the margin of 

 the dorsal sclerite on each side of the median notch; all other setae situated 

 on surface; setae 3 and 4 are curved inward; setae 2, 5 and 6 of equal length; 

 a row of hairs, which are denser in the middle near the anterior margin; 

 two flat chetoids with several pointed apical spinules near the base of the 

 median part of the row on each side. 



(361) 



FIGURES 477-482. Ithytrichia 1 am e 11 a ri s Eat. (after Nielsen): 



477 - full-grown larva, lateral; 478 - head, dorsal (A) and lateral (B); 479 - right antenna; 

 480 - labrum; 481 - right mandible, outer view (A), dorsal (B); 482 — gula and maxillolabium. 



401 



