ETHIOPIAN XASUTITERMITINA1 



39 



Nyasaland : 15m. from Limbe on Cholo Road, 12.viii.1953, gm. E. of Mlanje, 

 18.viii.1953, 2 vials, 12m. E. of Chiradzulu, 21.viii.1953, 25m. from Kota-Kota on 

 Kasungu Road, 17. ix. 1953, and 7m. from Nkata Bay on Ekwendeni Road, 22.ix. 

 1953 (W. A. Sands, W. Wilkinson). 



A total of 32 nest series were examined, and all material is in the British Museum 

 (Natural History) unless otherwise stated. 



N. infuscatus (Sjostedt) has been found in the coastal belt of East Africa, and 

 inland up the Great Rift Valley to the borders of the Congo. It has not been found 

 in central Kenya or Tanganyika, and there are no records from the Rift Valley 

 between the northern shoreline of Lake Nyassa and Rwindi. It is thought that it 

 probably occurs in patches of damp woodland on the fringes of all lakes in the Rift 

 Valley, along the western border of Tanganyika. 



The nest is commonly arboreal, usually attached to the side of a tree trunk rather 

 than taking the spherical form on a branch or liane seen in some other species. 



Nasutitermes kempae Harris 

 (Text-figs. 16, 17, 69-77, 207, 208; Map 9) 



Nasutitermes kempae Harris, 1954 : '35 Type locality : Tanganyika, Handeni. 

 Imago. Some additions to the original description (Sands, 1957) are necessary. 

 2-4-2-6 ; postclypeus inflated, width 2-0-2-3 times length. 



Cerci of $ slightly shorter to slightly longer than width across base. 

 Further material has increased the known range of variation in size. 

 Measurements (14 specimens from 2 localities) in millimetres. 



Range 

 1 20-1-36 

 0-48-0-55 



OI3-OI6 X OIO-0-20 

 OOI-OO3 

 O94-I l8 

 0-56-0-72 

 I38-164 

 9-90-I2-20 



Soldier. The following additions to the original description 

 angle of nose cone, 10-17 degrees ; postmentum in profile w( 

 Setae on head consist of a bilaterally placed pair on vertex, sometimes one or two small bristle- 

 like setae at base of nose, and rather hairy nose tip, occasionally with four setae more prominent 

 than those behind them ; microscopic small setae scattered sparsely over whole head. 



Abdominal tergites with scattered short setae and marginal setae so small and sparse as to 

 appear absent except under high magnification ; sternites with sparse short setae, and longer 

 setae on posterior margins. 



Measurements (29 specimens from 13 localities) in millimetres. 



Range Mean 



Head length to tip of nose . 1-61-2-05 . . . . 1-78 



Head width .... 0-88-1-29 



1 lead u ulth across eyes 

 Greatest diameter of eye 

 Ocellus 

 Ocellus to eye 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 

 Length of fore wing 



W/E index 



Mean 

 1 27 

 051 

 014 x 019 

 002 

 1 05 

 0-66 



151 

 1118 



(Harris, 1954) are necessary : 

 eakly convex, almost straight. 



Depth of head capsule 

 Width of pronotum 

 Length of pronotum 

 Length of hind tibia 



0-61-0-82 

 0-43-0-64 

 0-15-0-25 

 0-89-1-28 



Variation. This is another species in which the soldier caste in populous colonies appears to 

 be derived from several instars, indicating a residual or possibly rudimentary polymorphism. 



1 05 

 o-66 

 o-53 



0-22 

 I 04 



