XIV. THE DESCRIPTION AND LIFE-HISTORY OF A 



NEW SPECIES OF ANOPHELES THAT BREEDS 



IN HOLES IN TREES. 



By B. Prashad, B.Sc. 



(Plate XVII.) 



Though it may not be considered right to describe a species of mos- 

 quito from a single specimen and that specimen a male one, yet the 

 specimen on which I base the following description possesses some very 

 distinctive features. It is these features together with its breeding 

 habitat and the presence of well preserved larval and pupal stages 

 which have decided me to describe the form in question. 



I have very great pleasure in naming it Anopheles annandalei^ aftei' 

 Dr. N. Annandale, Director of the Zoological Survey of India, as a mark 

 of regard and gratitude which I always feel for him. 



The Imago. 



Detailed description of the male specimen : A medium sized mos- 

 quito ; wing measured 2-9 mm. General colouration light. 



The antennae have the basal joint of a light brown colour ; in the 

 succeeding joints the proximal portion from which the hairs arise is dirty 

 yelloAv, and the distal portion is of a creamy colour ; the hairs themselves 

 are pale yellowish ; the last joint is densely covered with small hairs, 

 there being no definite terminal hair. Pa^ii (fij]^ 1) 1-7 of length of 

 thorax, -6 of that of wing, distinctly smaller than the proboscis ; they 

 have a distinctly banded appearance. Basal segment with large black 

 scales on the outer and smaller ones on the inner side ; the penultimare 

 segment has the base and the apex creamy white, the rest of the 

 segment being dark brown ; the terminal segment has the base, the outer 

 and upper surfaces brownish, the rest being yellowish white ; the club 

 has the inner and lower surfaces of a much lighter tinge, appearing cream}' 

 white. The club is well developed, having a swollen terminal portion, 

 and is covered by large scales \\ ith a few hairs. Proboscis dark-.?caled : 

 labellae whitish. Clyfeus not covered by scales ; vertex with long hair- 

 like scales of a whitish colour ; further back these hair-like scales are 

 much darker in colour ; besides the hair-like scales there are broad 

 truncated squames of a snow-white colour on the posterior portion of 

 the vertex ; the najje is covered by black scales of the usual anopheline 

 type. 



Prothoraeic lobes pointed anteriorly with a tuft of dark brown scales 

 on their anterior edge, and with a few yellow chaetae. Mesonotmn 

 ashy grey all over except for a black line in the middle of the posterior 

 third ; but for a few white spatulate scales on its anterior edge it is 

 covered by long golden yellow bristles arranged in a median and two 

 dorso-lateral areas, the rest of the surface being without any scales or 



