?d 



MODE OF FEEDING. 



Captain Crawshay,* the flight of the Tsetse "is powerful and 

 noisy : the buzz is full-toned and somewhat highly -pitched — not 

 dull and droning like the buzz of the ordinary horse-fly." 



Fig. 5. 

 A Tsetse-lly (Ghssina moi'gitans, Westw., 9), before feeding. (X 0.) 



When alighting for the purpose of making a 

 Behaviour when ,mn- t. /-i ■ ^^ 



sucking blood : meal, isetse-nies, according to Captain Oraw- 



tlme taken by the shay * " do not settle as slowly as the horse-fly 

 fly in sucking Its . . 



fill : blood-sucking but land with a bump, standing well up on 



habit common to their legs." The method of feeding is described 



by the same authority as follows : * " When a 



* Tse-Tse ' settles with the intention of feeding — in the early 



mornings they usually simply settle on men's backs to sun 



themselves, away from the ground and vegetation wet with the 



Fiij. 6. 



A Tsetse-fly (Glossin<i vwrfitam:, Westw., 9), after feeding, showing abdomen distended 

 with blood. (X 6.) From a drawing from life, kindly lent by It. -Colonel Bruce. 



dew — he inserts his proboscis, lowers his head, and raises his 

 abdomen until it is almost vertical : when doing this, and for 

 some little time after he has commenced sucking, he works his 



wingless forms, and projecting from tlie thorax behind the wings), which • 

 come into contact with "some short bristly hairs situated on the abdomen 

 and pointing towards the thorax." 

 ■ * Chapter VII., Appendix B, p. 288. ^ 



