182 American Midland Naturalist Monograph No. 3 



several other progressively weaker setae; apical lobe (A-L) short, rounded, 

 bearing a number of short curved setae. Dist'tstyle (Ds) about three-fifths as 

 long as basistyle, slightly broader medially; terminal claw (Ds-C) slender, 

 nearly one-fourth as long as dististyle. 



LARVA. (Fig. 95). — Head broader than long. Antenna less than half the 

 length of the head, spinose; antennal tuft multiple, finely barbed, arising near 

 middle of shaft. Head hairs: Preantennal (A) multiple, barbed, reaching in- 

 sertion of antennal tuft; lower (B) and upper (C) single (hair C rarely 

 double); postclypeal (d) small, multiple; sutural (e), trans-sutural (f) and 

 supraorbital single or double. Upper lateral abdominal hairs usually 2 to 3- 

 branched on segments I to IV, double on V and single on VI. Comb of eighth 

 segment of numerous scales in a patch; individual scale fringed with subequal 

 spines, the apical one a little longer and stouter. Siphon about two and one- 

 half to three times as long as wide; pecten of numerous evenly spaced teeth 

 not reaching middle of siphon; subventral tuft multiple, inserted beyond pecten. 

 Anal segment longer than wide, with dorsal plate reaching well down the sides; 

 lateral hair single; dorsal brush consisting of a long lower caudal hair and a 

 shorter multiple upper caudal tuft on either side; ventral brush large, with 

 several tufts preceding the barred area; gills 4, variable in length, usually very 

 short and bud-like but occasionally as long or longer than the anal segment. 



distribution. — United States, Canada, Europe and Asia. Southern 

 States: Kentucky (140); Louisiana (52); Mississippi (4th Sv. C. Med. Lab. 

 records, 1945, unpublished); Missouri (1). Other States: California and 

 Colorado (52); Connecticut (90); Idaho and Illinois (52); Iowa (155, 156) 

 Kansas (128); Massachusetts (52); Minnesota (131); Montana (112) 

 Nebraska (178); Nevada, New Mexico, New York and North Dakota (52) 

 Oklahoma (159); Oregon and Pennsylvania (52); Texas (130); Utah (142) 

 Washington (52); Wisconsin (48); Wyoming (129). 



bionomics. — The females are vicious biters, attacking any time during the 

 day or night, but are particularly active toward the evening, or on calm, cloudy 

 days. They are strong fliers and occasionally migrate considerable distances 

 from their breeding places. The breeding places may vary from coastal salt 

 marshes to fresh inland flood and irrigation waters. It is a common species in 

 the rice fields of California. There appears to be considerable variation in this 

 species, possibly due to different types of larval habitats. 



Aedes (Ochlerotatus) dupreei (Coquillett) 



Culex dupreei Coquillett, 1904, Can. Ent., 36:10. 



ADULT FEMALE. — Rather small species. Head: Proboscis dark scaled; palpi 

 short, dark. Occiput dorsally with a longitudinal median stripe of lanceolate 

 silvery- white scales extending the length of the occiput and projecting forward 

 between the eyes; this median stripe bounded submedially by a patch of broad 

 white scales which blend on either side with a large lateral patch of broad 

 appressed brown scales. Erect forked scales on central portion of occiput pale. 

 Thorax: Integument of scutum dark brown, clothed with narrow bronzy-brown 



