Identification Keys 215 



70. Bands of abdomen white, not extending over 



one-third length of segment, no light-coloured 

 scales in dark portions of segments. 



Oclderotatus impiger, Walker. 



Bands of abdomen light fawn-colored, extend- 

 ing over one-third (nearly one-half) length of 

 segment ; dark portion of segment with a 

 mixture of light scales. 



OcJderotatus lazarensis, Felt and Young. 



71. Thoracic scales deep yellow and rather long. 



Oclderotatus pullatus, Coquillett. 

 Thoracic scales white, short. 



Oclderotatus cinereoborcatis, Felt. 



72. Front tarsal claws of female toothed. Palpi of 



male less than one-third as long as proboscis. 

 Bright yellow scales on upper side of thorax ; 

 abdominal segments black, with basal yellow 

 bands ; feet black. 



Aides fuscus, Osten Sacken. 



Front tarsal claws of female not toothed. Palpi 



of male about as long as proboscis 73 



73. Yellowish bands of abdomen conspicuous. 



Culex pipiens, Linne. 

 Yellowish bands of abdomen not very con- 

 spicuous ' Culex salinarius, Coquillett. 



74. Scales in outer half of wing chiefly broad. . . 75 

 Scales in lateral rows on veins of entire wing 



very narrow 76 



75. Abdominal scales bronze-yellow (Northern). 



Melanoconion melanurus, Coquillett. 

 Abdominal scales black (Southern). 



Melanoconion atratus, Theobald. 



1 Above characters not at all dependable, especially in dwarfed 

 specimens of pipiens, but salinarius is generally smaller and with 

 narrower bands. 



