GLOSSINA: BREEDING TECHNIQUE 401 



This species, recently described by Newstead, was taken in the Congo 

 Free State at Lac Mouro (River La Larva). It is closely allied to 

 medicorum but distinguished from it by the small harpes, the greater 

 length of the marginal hairs of the editum and by the greater length 

 of the lateral branches of the hairs of the arista. 



Glossina submorsitans, Newstead. Closely allied to morsitans, and 

 regarded by Austen as a form or race of the latter. Newstead considers 

 it to be a distinct species, and states that it can be distinguished from 

 morsitans by the clearer and more sharply defined abdominal bands ; 

 by the median light band on the third, fourth and fifth segments being 

 equal and narrower than in morsitans ; by the abdominal bands being 

 rounded medially and tapering towards the lateral margin. It is found 

 in Nigeria ; nothing is known regarding its habits or early stages. 



Glossina fuscipleuris, Austen. This dark tsetse is allied to fitsca, but 

 can be distinguished from it, according to Austen, by the dark grey 

 colour of the pleurae, and the longer finer fringe of black hairs on 

 the hind coxae. Newstead has recently studied the armature of the 

 external genitalia of the male of this species and finds that it resembles 

 that of tabaniformis. The distinguishing characters are as follows. 

 The harpes have three processes instead of four as in tabaniformis ; the 

 great width and serrations of the proximal teeth ; the extreme narrowness 

 of the second pair, and the ribbon-like character of the third ; the 

 sclerite of the vesica is notably large. 



This species is found in the forest region of the Congo Free State. 

 Nothing is known regarding its habits or early stages. 



Glossina austeni, Newstead. A small slender species of the morsitans 

 group. Its abdomen is of a bright ochraceous colour ; the head is some- 

 what narrow. It may be confused \vith the other small tsetse fly 

 tachinoides ; it can, however, be distinguished by its small size, narrow 

 head, bilaterally striped thorax, reddish abdomen and dark hind tarsi. 

 According to Newstead, the foot-like shape of the superior clasper, 

 and the narrowly pointed distal portion of the harpes, are characteristic. 



Neave states that it may be mistaken for a small tabanid. It is found 

 in the forest along the coast line of British East Africa in company with 

 paHidipes and brevipalpis. 



From what has been said above regarding the early stages of the 

 various species, the worker will have some idea where to look for the 



puparia ; much has yet to be learnt regarding the , 



Breeding Technique. 

 larviposition of the tsetse flies. Once having found 



these breeding grounds, large numbers of puparia can be collected ; 

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