I 



A Monograph of the Formicidae of South Africa. 343 



T. ustezula.e, Forel. 

 Bull. Soc. Vaiid. Sc. Nat., vol. 50, p. 221, $ , <?, 1914. 



^ . 2 - 8-3"2 mm. Very similar to T. Hepburni, but larger. In 

 colour and pilosity like Marleyi. Head, thorax and nodes reticulate, 

 the sculpture emphasised longitudinally. Abdomen shining, sparsely 

 and evenly punctured, fairly closely punctured at the base. 



Head feebly narrowed in front, almost quadrate, slightly longer than 

 wide, the sides feebly convex, the posterior margin straight." Man- 

 dibles shining, striated and punctured, with 3 distinct teeth in front, 

 and 3 smaller and less acute teeth behind. Distinct scrobes present, 

 smooth and shining, divided by a longitudinal ridge into two halves. 

 The scrobes and scapes extend back to the posterior fourth of the head. 

 The thorax is similar to that of Marleyi, but a little longer in 

 proportion to the width. The epinotal spines are a trifle longer than 

 in Marleyi, longer than their basal width. The peduncle of the 

 petiole is a little shorter than the node ; the latter, seen from above, 

 is oval, the anterior face hardly more convex than the posterior, not 

 quite twice as wide as long, not higher than the 2nd node. The latter 

 as long as the 1st, not quite twice as wide as long, a little wider than 

 the 1st, and seen from above, also oval. 



<$ . 4*2 mm. Colour and pilosity as in the ^ , except the man- 

 dibles, antennae, tibiae and tarsi, which are pale brownish-yellow ; the 

 hairs on the abdomen are mostly simple. Head, pronotum, sides of 

 epinotum and the nodes feebly reticulate. Mesonotum shining, 

 sparsely punctured, also with a few feeble longitudinal lines. Dorsum 

 of epinotum longitudinally striate. Abdomen smooth and shining. 

 Mandibles with 5 small teeth. Head quadrate, the posterior angles 

 rounded, very slightly convex above. Eyes large, occupying the 

 anterior third of the sides. The scapes extend back as far as the 

 posterior ocelli ; 2nd joint of flagellum three times as long as the 1st, 

 shorter than the scape. Thorax much wider and higher than the head, 

 the pronotum not visible from above. The dorsum of the epinotum is 

 more than twice as long as the declivity, and ends in two blunt ridges 

 or tubercles. Nodes of petiole shorter than in the- ^ , the peduncle of 

 the 1st node longer. Wings pale dirty yellow, nervures yellow. The 

 petiole is much shorter and lower than in desertorum, Forel. The 

 epinotum in the latter is rounded, not angular. 



Beach Bush, Durban ; nesting in sand dunes. (S.A.M., R.M., Gr.A. 

 colls.) 



