ETHIOPIAN NASUTITERMITINAE 55 



GRALLATOTERMES Holmgren 



Eutermes (Grallatolermes) Holmgren 1912 : 65. [Subgenus of Eutermes Heer.] 

 Grallatotermes Light, 1930 : 16. Type-species by original designation, Termes (Eutermes) 

 grallator Desneux, 1905. 



Imago. Left mandible with apical tooth slightly shorter than first marginal, distance between 

 them one quarter of distance between first and third marginals (left mandible index -25), 

 second marginal separated by deep notch in cutting edge in front of third marginal, small 

 subsidiary tooth connecting third marginal and molar prominence retracted behind gap between 

 them when viewed from above ; right mandible with apical and first marginal subequal, 

 posterior cutting edge of first marginal shorter than that of second, not overlapping anterior 

 edge of second (apparent overlap embedded in smooth shining fused surface), molar plate with 

 no marked irregularity of outline in surface view, and 13-14 ridges, diminishing in size posterior- 

 ly. Postclypeus short and lightly inflated, length approximately one-third width. Fontan- 

 els pale, roughly T-shaped. Pronotum almost without raised anterior margin. Pilosity of 

 head rather sparse, fine, and uniform, with few more prominent setae. 



Soldier. Monomorphic. Nose thick but weakly conical, tip sharply tapered. Vestigial 

 mandibles with points. Head capsule slightly constricted behind antennae, setae confined to 

 four at nose tip, and bilaterally placed pairs on postclypeus and vertex. 



The imago mandibles of this genus are quite distinct from any others of the sub- 

 family in Africa, in combining the notched cutting edge of the left mandible between 

 first and third marginals with the many-ridged right molar plate. The latter feature 

 is typical of the Hospitalitermes-Grallatotermes group of constricted-headed genera, 

 as also is the retracted subsidiary tooth between left third marginal and molar 

 prominence. Leptomyxotermes has a somewhat similar left mandible, but the molar 

 plate and second marginal of the right mandible are very different. In Fulleritermes 

 the subsidiary tooth between left third marginal and molar prominence is well 

 developed and the right molar plate is distinct. 



Grallatotermes africanus Harris 

 (Text-figs. 102, 103, 127-129, 166-168, 217, 218; Map 3) 



Grallatotermes africanus Harris, 1954 : T 35 Type locality : Tanganyika, Tanga District, 

 Ngomcni. 



Material (additional to that recorded in Harris, 1954). Tanganyika : 25m. 

 from Dar es Salaam on Morogoro Road, 21.vii.1954 (R. M. C. Williams). 

 Mozambique : Ribaue, 20. v. 1932 (/. Vincent). 

 A total of 7 nest series were examined. 



The extension of the recorded distribution of this species was not unexpected, and 

 further collecting may show that its distribution is similar to that of Nasutitermes 

 kempae Harris, with Zululand as its southernmost extremity. 



FULLERITERMES Coaton 



Fulleritermes Coaton, 1962 : 151. Type-species, by original designation, Eutermes contractus 

 Sjostedt, 1913a. 



Imago. Left mandible with apical tooth as long as first marginal, distance from apical to first 

 marginal more than one-third distance between first and third marginals (left mandible index 

 ■36 — 43), cutting edge between first and third marginals with notch separating third marginal ; 



