

Parts of Anopheles adults. Abbreviations: C. costa; a. anal vein; 

 p. palp; /;r. proboscis. ( After Ross & Roberts 1943. ) 



Fig. 59. — A. pmutipennis. wing and mouthparts. 



Fig. 60. — A. crucians, wing and mouthparts. 



Fig. 61. — A. quadrimaculatus. wing and mouthparts. 



Fig. 62. — A. ualkeri. mouthparts. 



An eastern and southern species widespread in 



Illinois, abundant near lakes in summer 



quadrimaculatus 



Key to Species of CULEX (Females) 



1. Proboscis and hind tarsus with white bands; mesono- 



tum with white longitudinal lines (Fig. 63/4). 

 A transcontinental species of open habitats, wide- 

 spread but rarely collected in Illinois tarsalis 



Proboscis and hind tarsus entirely dark; mesonotum 

 with pale dots but without white longitudinal 

 lines 2 



2. Dorsum of abdomen with apical white bands or 



apical lateral spots on some of the segments, and 

 without basal bands. A Holarctic innocuous spe- 

 cies widespread and often trapped in Illinois. . . . 



territans 



Dorsum of abdomen without apical bands, with 

 (Fig. 63B, C) or without definite basal bands. . . .3 



3. Scales of veins R, and R , very long and slender (Fig. 



64A ) , similar to scales on stem of R, in Fig. 64R 

 (examination of wing mount under a compound 



microscope is best method for seeing this char- 

 acter ) ( subgenus Culex } 4 



Scales of veins R^. and R, short and wide (Fig. 64B) 

 contrasting with long, slender scales on stem of R, 

 ( subgenus Melanoconion ) 5 



Dorsal abdominal segments with dingy and often 

 inconspicuous basal bands of yellowish or brown- 

 ish scales, the bands usually irregular and narrow. 

 An eastern and central species widespread and 

 annoying in Illinois but seldom trapped at light 

 salinarius 



Dorsal abdominal segments with bright and con- 

 spicuous basal bands of white scales, the bands of 

 the middle segments wide (Fig. 63B, C). Three 

 widespread, frequently trapped species of the sub- 

 genus Culex, each common in Illinois, females of 

 which cannot be identified with accuracy. . pipiens 



quinquefasciatus 

 restuans 



Top of head with a large mesal triangle of narrow 

 scales, the area between this triangle and eyes 



Fig. 63. — Culex females, dorsal aspect: A, C. 

 tarsalis, thorax and abdomen; B. rypical C. pipiens, 

 abdomen; C. typical C. i/uini/uefasciatus. abdomen. 



Fig. 64. — A. Culex restuans, 

 scales on wing vein Ri; B, C. er- 

 raticus, scales on wing veins R. 

 and Ri. 



:^^ 



S> >-V 



J -^ 



13 



