248 



GLOSSINA 



[CH. 



Synopsis of species of GLOSSINA, after Austen*. 



Tarsi of hind-legs entirely) Glossina palpalis Group (I), also G. morsitans 

 dark brown or black ) var. paradoxa (vide infra). 



( Species of small size, 

 length not exceeding 

 10-5 mm., usually 

 much less ; wing ex- 

 pansion not greater 

 than 22 - 5 mm. Upper 

 surface of abdomen 

 distinctly banded, 

 with conspicuous dark 

 brown transverse 



marks on a pale 

 ground colour. J 



Only the two 

 last joints of 

 hind tarsi are 

 dark-coloured, 

 thus forming 

 a conspicuous -< 

 contrast with 

 the remaining 

 joints which 

 are pale. 



Species of large size, 

 exceeding 10-5 mm. 

 Wing expansion at 

 least 25 mm. 



Upper surface of ab- 

 domen not marked 

 with distinct bands as 

 in the previous group. 



Wings fairly dark. 

 Palpi long and 

 slender (except in 

 tabaniformis). 



Glossina 

 morsitans 

 Group (II). 



Wings pale. 

 short. 



Palpi 



Glossina 



fusca 

 Group (III). 



Glossina 

 brevipalpis 

 Group (IV) 



I. GLOSSINA PALPALIS group. 



Dorsum of abdomen ochraceous-buff or buff ; third and following segments 

 exhibiting sharply denned, dark brown or clove-brown interrupted transverse 



bands. Length not more than 8 mm. . . . . tachinoides, Westw. (p. 253). 







Closely resembling tachinoides, but distinguished by its bright ochraceous 

 colour and relatively narrow head. Length of ? (only specimen known) 7 mm. 



austeni, Newstead. 



Third joint of antennae pale, clothed with long and fine hairs, forming a 

 conspicuous fringe on front and hind margins. Length 8 to 9 mm. 



pallicera, Bigot. 



Dorsal surface of abdomen dark sepia-brown ; median paler area on 

 second segment broad and more or less quadrate or irregular in outline. 

 Hypopygium of male buff or ochraceous-buff . . . . caliginea, Austen. 



Dorsal surface of abdomen blackish-brown ; median pale area triangular 

 in outline. Hypopygium of male grey. Length of male always exceeding 

 8-5 mm. . . . . . . . . . . . . palpalis, Rob. Desv. (p. 256). 



1 Handbook of the Tsetse-Flies, 1911. 



