:3ii) 



FIGURES 540-542. Drusus c a uc a sic u s Ulm.: 



540 — head, dorsal (A), membranous area in region of left tentorial pit (B), head, ventral 

 (C)-, labrum (D), mandibles, dorsal (E); 541 - pronotum (A), head and prothorax, lateral 

 (B); 542 — mesonotum (A),tergites and pleuron of metathorax (B). 



Mesopleuron triangular, brown; episternum much larger than epimeron, 

 with 3 large dots at anterior margin; pleural groove with narrow black 

 stripe; a large, black, oval spot at distal margin; primary seta of episternum 

 situated nearby; seta of epimeron situated distally at margin, some distance 

 from suture, both setae black, moderately long; secondary setae dark, 

 distributed on entire sclerite, several of them moderately long, others small. 



392 



