(342) 



FIGURES 428-433. Oxyethira cos t a lis Curt, (after Nielsen): 



428 — full-grown larva; 429 - head, dorsal (A) and lateral (B); 430 - left antenna; 431 — labrum; 

 432 — mandible, inner and dorsal view; 433 — head, middle of ventral side. 



Full-grown larva. (Figure 428). Length at beginning of stage 1.5 mm, 

 at the end 3.3—3.4 mm; ratio of length of head, thorax and abdomen at 

 beginning of stage 10:13.5:24, at the end 10:13.5:72. Larva light; the 

 golden yellow ground color of the sclerites predominates; colored parts 

 light brown, brown or blackish brown; abdomen and other membranous areas 

 green. 



Head (Figure 429) slightly compressed laterally, slightly narrower 

 anteriorly; ratio of length to width 1.63, ratio of height to width 1.03. 



377 



