THE SOLDIERLESS TERMITES OF AFRICA 



95 



raised, same size as fontanelle, dark sepia-brown; postclypeus brown to sepia-brown, labrum 

 yellow-brown, frontal marks distinct, semicircular, depressed, brown; antennae brown. Pro- 

 notum, meso- and metanota, sepia-brown, transverse dark suture distinct in metanotum only, 

 weak or absent in mesonotum; legs, femora brown, tibiae yellow-brown, tarsi yellow. Ab- 

 dominal tergites sepia-brown; dorsal stigmata pale brown, sternites brown laterally; paler in 

 middle, ventral stigmata pale brown, cerci pale yellow. 



Posterior margin of head capsule evenly rounded; ocelli medium -sized, separated from 

 compound eyes by two-thirds own least diameter or more; postclypeus weakly inflated, Pcl/W, 

 0-22-0-24, Pc1/Ra, 2-73-3-15, posterior margin bowed or regularly rounded, median suture 

 usually absent, sometimes weakly present. Apical teeth of mandibles short, La/Li, 0-46-0-48, 

 Ra/Ri, 0-62-0-70; subsidiary marginal tooth of left mandible just clear of molar prominence 

 in surface view, complex ratio La/Li. L m , 4-54-5-50; apical and marginal teeth of right mandible 

 in line, anterior edge of first marginal slightly longer than that of second. Pilosity of head 

 capsule dense, brown, uneven, not forming a pelt. Meso- and metanota less narrow at con- 

 striction, M/W, 0-26-0-28. Fore tibia with third apical spur distinct, nearly as large as other 

 two. 



206 



207 



Figs 202-207. Astalotermes, imago head capsules, front and side views. 

 A. empodius; 204, 205, A. impedians; 206, 207, A. irrixosus. 



202, 203, 



