355, 



FIGURES 459-464. Orthotricia te te nsii Kolbe (after Nielsen): 



459 - full-grown larva, dorsal; 460 - head, dorsal; 461 - right antenna; 462 ■ 

 labrum; 463 - mandibles, ventral; left mandible (A), right mandible (B); 464 

 maxillolabium. 



Labrum (Figure 462) oblong, narrower anteriorly, asymmetrical; its 

 dorsal sclerite projects in the middle in form of a long, blunt, beak- shaped 

 process which is slightly curved to the left; posterior angles with short, 

 broad asymmetrical processes; anterior membranous part of labrum also 



393 



