Anopheles culiciformis. 



GROUP X. 



Type : A. culiciformis. 

 23. ANOPHELES CULICIFORMIS (sp. n.) 



(Figure facing page 122). 



This is a rather large, brown "anopheles," for some time 

 confounded with the much smaller A. aitkeni till separated by 

 Dr. Cogill by its very markedly " culex" like attitude, by the 

 relative position of the transverse veins, and particularly by the 

 marked difference in the structure of the larva. This mosquito 

 might be Theobald's Stethomyia nimba, but he states that in that 

 mosquito the halteres have a pallid stem and fuscous knob, while 

 this species has a black knob covered with brown scales. Another 

 important difference is found in the characters of the male insect, 

 for while Theobald states that S. nimba has the fore ungues in the 

 male unequal, the larger uniserrated, Dr. Cogill has drawn our 

 attention to the fact that there is only one claw on each fore leg of 

 culiciformis and that has only a single tooth. In all other respects 

 this mosquito conforms with Theobald's description of S. nimba. 



The palpi are entirely covered with brown scales ; without any 

 bands ; rather shorter than the proboscis. 



The head is chiefly covered with brown upright-forked scales, 

 but there are a few white spindle-shaped scales in the middle line in 

 front ; there is no distinct frontal tuft of hairs. There are rather 

 more numerous and stronger brown hair-like bristles around the eyes 

 and on the front of the head than is usual in other " Anopheles." 

 Thorax covered with a few white hair-like scales and many long 

 brown bristles. Prothoracic lobes distinctly mammilated as in 

 Theobald's Stethomyia nimba. Scutellum with long brown bristles ; 

 in the middle there are a few short scale-like bristles. 



Abdomen brown, covered with numerous fine golden aod coarse 

 brown hairs. 



Wings unspotted and covered with rather broad spindle-shaped 

 scales approximating in shape to those found on nigerrimus. Vena- 

 tion as in other " Anopheles." Transverse veins almost in one line. 



Halteres with light stem and dark brown knob covered with 

 brown scales. 



Legs long and thin, entirely brown and covered with scales. 

 I22J 



