THE SOLDIERLESS TERMITES OF AFRICA 



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remaining species, A. improelatans, has wider meso- and metanotal constrictions, 

 longer mandibular apical teeth, and the right first marginal tooth longer than the 

 second. In the worker caste, it has already been compared with A. amachetus 

 and A. ateuchestes. It is distinguished from A. cnaphorus, A. nanus and A. poly- 

 scolus by its unarmed enteric valve. A. improelatans is distinguished by the equal 

 length of the anterior edges of first and second marginal teeth of the right mandible, 

 and the much shorter mixed segment. The latter feature is also shorter in A. 

 hemerus, though not as short as in the previously mentioned species. A. hemerus is 

 also larger with less inflated postclypeus. A. improcinctus is smaller, with longer 

 mandibular apical teeth, and A. disluctans has less conspicuous head setae. The 

 abdomen of the worker caste is not strongly dehiscent in A. cicur, only about one in 

 four preserved specimens having burst. 



Holotype 9 imago, paratype $ and $ imagos and workers from type-colony, 

 Democratic Republic of Congo: Yase, 12 km from Yangambi, 31.V.1948 

 {A. E. Emerson), in American Museum of Natural History (paratypes from type- 

 colony also in BMNH). 



Other paratype material. Democratic Republic of Congo: Kivu, Irangi, 

 i°53'S., 28°28'E., 5.XLI963 (E. Ernst) in Swiss Tropical Institute, Basle and BMNH. 



There is no biological information on this species. 



Anenteotermes cnaphorus sp. n. 



(Text-figs 566, 575-578 & 595-6oo; PI. 8, fig. 3) 



Imago. Head capsule sepia-brown (queens, colours may be faded) darker above ocelli; 

 fontanelle elongate oval, irregular in outline, somewhat indistinct, being covered with setae, 

 equal in size to ocelli, or slightly smaller, slightly depressed, brown; medial spot oval, nearly 

 flat, very small, coloured as head; postclypeus brown, labrum yellow-brown; frontal marks 

 indistinct slightly depressed brown crescents; antennae yellow-brown. Pronotum, brown, 

 meso- and metanota yellow-brown, transverse sutures present; femora and tibiae pale yellow- 

 brown, tarsi yellow. Abdominal tergites brown, sternites yellow-brown laterally, yellow in 

 middle, stigmata coloured as sclerites; cerci yellow. 



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

 compound eyes by less than half own least diameter; postclypeus moderately inflated, Pcl/W, 

 0-29-0-31, posterior margin somewhat irregularly arched, median suture present. Apical 

 teeth of mandibles short, La/Li, 0-60-0-64, Ra/Ri. 0-83-0-89; subsidiary marginal tooth of 

 left mandible widely clear of molar prominence in surface view, complex ratio, La/Li. L m , 

 9-93-10-10; point of first marginal tooth of right mandible slightly behind line of apical to 

 second marginal, anterior edges of marginal teeth approximately equal, complex ratio, Ri/RA-Rm 

 (note difference from ratio used in worker caste), 17-30-19-40. Pilosity of head capsule dense, 

 fairly even, forming a rough pelt with many emergent setae, yellow-brown. 



Measurements (three specimens from two localities) in millimetres. 







Range 



Mean 



Head width across eyes 



(W) 



0-84-0-88 



0865 



Ocellus (O w X Oi) 





007-008 X OIO-O-II 



0-073 x 0-107 



Ocellus to eye (O-E) 





003-004 



0033 



Postclypeus length (Pel) 





0-25-0-28 



0-261 



Antennal article III . 





002-004 



0-032 



