276 GLOSSINA MORSITANS [CH. 



REFERENCES. 



Austen, E. (191 1). Handbook of the Tsetse-Flies, p. 63. 



Bouet and Roubaud (1910). Ann. Inst. Pasteur, vol. xxiv. p. 658 ; Bull. 



Sac. Path. Exot. vol. iii. pp. 599, 722. 

 Kinghorn, A. (191 1). Cf. 5. S. Bulletin, vol. iii. p. 136. 

 Roubaud, E. (1911). Compt. Rend. Acad. Sci. vol. clii. p. 406. 

 Simpson, J.J. (191 2). Bull. Entom. Research, vol. in. p. 137. 



Glossina morsitans Westwood, 1850. 



Synonym. Glossina submorsitans Newstead, 1911. 



(? , ? . Length ,J 7-2 to 9 mm., $ 8-6 to 9-6 mm. ; width of head, S 

 2'4 to 2-75 mm., ? 2'5 to 3 mm. ; width of front at vertex, d 0-6 mm., 

 ? 08 to I mm., length of wing, s 7-6 to 8-2 mm., ? 8-2 to 9-5 mm. 



" Dorsum of thorax Ught grey, olivaceous-grey, or smoke-grey in <f , 

 drab-grey in ? , the thoracic markings in both sexes incompletely developed, 

 and reduced to brownish or mouse-grey longitudinal streaks ; dorsum of 

 abdomen buff to ochraceous-buff (in pinned specimens sometimes mouse-grey 

 or olivaceous owing to post mortem changes), with a larger or smaller clove- 

 brown blotch (sometimes indistinct or almost wanting) near each basal angle 



Fig. 72. Glossina morsitans. Dorsal view of female. ( x 4.) 



of the second segment, and the third to the sixth segments inclusive each with 

 a very conspicuous clove-brown transverse band, interrupted in the median 

 line, not reaching the lateral margins, and not extending beyond the basal 

 three-fourths of the .segment, if so far ; legs buff, last two joints of hind tarsi 

 clove-brown or black, last two joints of front tarsi and penultimate joint of 

 middle tarsi conspicuously tipped with clove-brown or dark brown, last joint 

 of middle tarsi entirely dark brown above in typical race, otherwise distal half 

 or third of last joint of middle tarsi alone dark brown or clove-brown, re- 

 mainder of joint merely brownish or even entirely pale." (Austen.) 



