THE SOLDIERLESS TERMITES OF AFRICA 



227 



Measurements (eight specimens from four localities) in millimetres. 



Head width across eyes (W) . 



Ocellus (O w x Oi) . 



Ocellus to eye (O-E) 



Postclypeus length (Pel) 



Antennal article III 



Antennal article IV 



Antennal article V 



Left mandible, apical to first 

 marginal (La) 



Left mandible, first to third 

 marginal (L|) 



Left mandible, third marginal 

 to molar (L m ) 



Right mandible, apical to first 

 marginal (Ra) • 



Right mandible, first to second 

 marginal (li\) 



Right mandible, second mar- 

 ginal to molar (R m ) 



Mesonotum width (M) 



Metanotum width (N) . 



Range 

 1 04-1 -2 1 

 008-010 x 010-013 

 005-008 

 0-27-0-34 

 003-0 06 

 004-006 

 0-04-0- 06 



OIO-OII 



018-019 



006-008 



010-012 



013-014 



006-009 

 0-29-0-35 

 0-30-0-36 



Mean ± S.D. 

 1-125 ± oo55 

 0091 ± 0009 x 0118 ± O-OII 

 0064 ± OOIO 

 0-291 ± 0022 

 0044 ;£ 0008 

 0051 ± 0006 

 0-049 ± 0-005 



0106 ± 0005 



0182 ± 0007 



0076 ± 0006 



0110 i 0005 



0136 ± 0006 



0078 ± 0008 

 0326 ± 0022 



0334 ± 0022 



Worker. Head capsule yellow-white, pilosity pale yellow, very sparse. Postclypeus moder- 

 ately inflated, Pcl/W, 0-25-0-27, Pcl/Ri, 2-22-2-35. Apical teeth of mandibles short, L A /Li, 

 0-60-0-64, Ra/Rj, 0-78-0-88. Fore tibia slightly swollen, Ti/T w . 4-21-4-62. Enteric valve 

 seating connected to second pouch of proctodeum by very long neck; internal cushions of 

 enteric valve all retracted, equally developed, armed at posterior ends with numerous long, 

 prominent but fine spicules, rest of cushions smooth and unarmed; membranous wall of valve 

 between and beyond cushions similarly armed with long spicules forming an entire fringe round 

 valve opening. Other characters of mandibles and intestine given in generic diagnosis. 



Measurements (four specimens from four localities) in millimetres. 



Head width (W) .... 



Fore tibia width (T w ). 



Fore tibia length (Ti) .... 



Postclypeus length (Pel) 



Left mandible, apical to first marginal (L A ) 



Left mandible, first to third marginal (Li) 



Left mandible, third marginal to molar (L m ) 



Right mandible, apical to first marginal (R A 



Right mandible, first to second marginal (R|) 



Right mandible, second marginal to molar (R m 



A. fossor was chosen as type-species of the genus Aderitotermes because although 

 quite distinct from other genera, it is the most primitive in having shorter apical 

 mandibular teeth, and the enteric valve armature of spicules alone. It shows 

 distinct resemblances to Amicotermes in this respect, and it should be noted that a 

 dense fringe of minute spicules is also found in Acholotermes. Both these genera 

 have more elongated apical teeth, but the enteric valve seating is similar, and in 





Range 



Mean 





0-90-0-95 



0916 





— 



0148 





0-63-0-68 



0642 





0-23-0-25 



0239 





— 



0089 





014-015 



0144 





004-005 



0048 



) 



— 



0088 



) 



OIO-OII 



0105 



i m ) 



0-05-0-06 



0053 



