Genus Myzomyia. 



45 



Fig. 9. 

 Male genitalia of Myzomyia nili. Theobald. 



Wings mostly black scaled, with three creamy white costal 

 spots spreading on to the first long vein across the sub-costal, 

 the scales are also pale on the base of the fork-cells and at the 

 cross-veins, also on the lower branch of the fifth and on its stem 

 and on the sixth, fringe dusky, traces of a pale area at the lower 

 branch of fourth and upper branch of the fifth ; first fork-cell con- 

 siderably longer, very little nar- 

 rower than the second posterior 

 cell, its stem about two-thirds 

 the length of the cell, stem of 

 the second posterior longer than 

 the cell by about half the cell's 

 length ; mid cross-vein a little 

 nearer the apex than the super- 

 numerary, the posterior not 

 quite its own length nearer the 

 base than the mid cross-vein. 



Male genitalia with the 

 claspers curved apically, where 

 they are slightly swollen, with a longish median process between 

 the two basal lobes, with three broad sword-shaped chaetae 

 on each side near the apex. 

 Length, — 3 to 3*5 mm. 



Habitat. — Lado (Dr. Sheffield Neave). Jebel Akmet-Aga 

 on the White Nile, also on the Middle Sobat (Dr. Balfour). 

 Time of capture. — February. 



Observations. — Described from three perfect males. 

 The females were taken at Jebel Akmet-Aga on the White 

 Nile, also on the Middle Sobat. 



Observations. — Described from two perfect females taken by 

 Dr. Balfour. They bear a very strong resemblance to Myzomyia 

 funesta, Giles, variety umbrosa, Theobald (vide Kept. Malaria 

 Exp. to Gambia, Mem. X., Liv. School Trop. Med. App. p. 4, 

 1903). The main differences are as follows : The palpi and the 

 proboscis are relatively not so long as in M. funesta, and they 

 are all black save for a minute pale apical band, whilst in funesta 

 there are three pale bands ; the wings are much more densely 

 scaled than in funesta, and the fork-cells shorter and with much 

 longer stems than in funesta. I thus think it must be treated 

 as a distinct species, owing to the shorter palpi, and not as a 

 melanic variety. 



