

Range 



Mean 





0-66-0-71 



0-692 





OIO-OII 



0107 





0-45-0-48 



0463 





0-17-0-24 



0196 





007-008 



0073 





0-11-0-13 



0118 





— 



0038 





007-008 



0073 





008-010 



0090 



») 



0-04-0-05 



0044 



THE SOLDIERLESS TERMITES OF AFRICA 67 



Head width (W) 



Fore tibia width (T w ) • 



Fore tibia length (T|) . 



Postclypeus length (Pel) 



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 (R A 



Right mandible, first to second marginal (R| 



Right mandible, second marginal to molar (R,„ 



The differences between A. concilians and A. amicus, A. benignus and A. comis 

 have already been given under those species. Within Group I there only remains 

 A. eumenus. This species is very similar, though slightly smaller, with somewhat 

 longer apical teeth to the mandibles in both imago and worker castes; the latter 

 has also a more inflated fore tibia. The abdomen of the worker is definitely de- 

 hiscent in A. concilians. 



Lectotypes have been designated from the existing syntype material of A. con- 

 cilians (Silvestri) and A. placidus (Silvestri) as indicated below. 



Type-material. Anoplotermes concilians Silvestri, LECTOTYPE $ imago, 

 paralectotype $ imagos and workers from type-colon}', Guinea: Kindia, io°N., 

 i2°45'W., 21.viii.1912 (F. Silvestri), in Silvestri Coll., Istituto di Entomologia 

 Agraria, Portici, Naples. Anoplotermes placidus Silvestri, LECTOTYPE $ imago, 

 paralectotype $ (teneral) and <$ imagos and workers from type-colony, Guinea: 

 Mamou, io°2o'N., I2°I5'W., 25.viii.1912 (F. Silvestri), in Silvestri Coll., Istituto di 

 Entomologia Agraria, Portici, Naples. 



Other material. Nigeria: Eastern Region; Port Harcourt, 5.iii.ig57 

 (W. Wilkinson). Northern Region; 18 m. from Gombe on Numan Road, and 40 m. 

 S.E. of Gombe on Numan Road, 11. v. 1957, 20 m. from Yandev on Makurdi Road, 

 25. ii. 1958, two vials (W. A. Sands). Apart from the type-series, material is in the 

 BMNH. 



A total of seven nest-series have been examined. Those for which the information 

 is available suggest that this species is commonly found in the nests or mounds of 

 other termites. 



Astalotermes eumenus sp. n. 



(Text-figs 65, 66, 75, 76 & 101-104) 



Imago. Colour probably faded during long preservation of only known nest-series. Head 

 capsule yellow-brown, not darker above ocelli; fontanelle oval, flat, vestigial, slightly paler 

 than head; medial spot similar in size and shape to fontanelle, colour as head; postclypeus 

 pale yellow-brown, labrum yellow; frontal marks indistinct flat crescents coloured as head; 

 antennae yellow. Pronotum, meso- and metanota pale yellow-brown, transverse sutures 

 absent from meso- and metanota; legs, femora yellow, tibiae and tarsi paler. Abdominal 

 tergites and dorsal stigmata pale yellow-brown. Sternites and ventral stigmata paler still, 

 cerci yellow. 



