DESCEIPTION OF GLOSSINA PALLIDIPE8. 87 



Syxonymy and Afpixities. 



There can be no question of the correctness of the identifica- 

 tion of Glossina morsitans, Westw., as defined above, and although 

 the specific name has no doubt often been used loosely in what 

 may be termed a generic manner, while Continental writers have 

 occasionally referred to the species as if it were Wiedemann's 

 longipalpis, the species itself has never been re-described under 

 any synonym. 



Glossina morsitans, Westw., Gl. longipalfis, Wied., and Gl. 

 jpallidipes, sp. nov., form a group of closely allied species, of which 

 Gl. jpalpalis, Rob.-Desv., is a somewhat more distant connection. 

 A discussion of the distinctive characters will be found on 

 pp. 93-95, under Gl. longipalpis. 



Glossina pallidipes, sp. nov. 



(Plate IV.) 



(J , 9 • Length, 8 to 10 millim. (3^ to 4^ lin.) ; length of wing, 

 8f to 9|^ millim. (4^ to 4^ lin.) ; width of head in male, 3 millim. 

 (IJ- lin.), in 9 2| millim. (l.\ lin.). Width of front at vertex iii 

 (J ^, in 9 between |- and i of total width of head measured 

 across middle of eyes. 



Precisely similar to Gl. morsitans in colouration and general 

 appearance, hut distinguishable at once hy the front and middle 

 tarsi being entirely yellow *; the interrupted bands on tlie abdomen 

 generally darker, and approaching closer to the hind margins of the 

 segments {the pale hind margin usually confined to the posterior sixth 

 or fifth of each segment). 



As compared with Gl. morsitans, this species, in addition to 

 the differences already mentioned, is often distinctly larger ; the 

 eyes are larger and more prominent, while the front in the ^ is 

 (actually and not merely relatively) narrower, and also as a rule 

 somewhat darker towards the vertex • the gi'ound-colour of the 

 abdomen is ochraceous-bufi" to ochraceous ; the pale hind margins 

 of the segments from the 3rd to the 6th inclusive are narrower 

 than in GL morsitans, and sometimes exceedingly narrow, so that 



* In specimens preserved in spirit the last two joints of the front tar«i 

 sometimes appear faintly tipped with pale brown; 



