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American Midland Naturalist Monograph No. 3 



margin curved, portion beyond subapical lobe more slender, and apex bluntly 

 rounded; vestiture of numerous setae, longer on outer aspects. Subapical lobe 

 (S-L) prominent, undivided, bearing three long stout pointed rods hooked at 

 tips, a large broad leaf-like filament and a stout seta. Dististyle (Ds) about 

 half as long as basistyle, curved, tapered beyond middle, bluntly pointed at 

 tip; terminal claw (Ds-C) short, blunt. 



LARVA. (Fig. 134). — Head broader than long. Antenna shorter than head, 

 constricted beyond antennal tuft, with portion before constriction spinose, 

 portion beyond constriction darker and with few spines; antennal tuft large, 

 multiple, barbed, inserted at outer third, reaching beyond tip of antenna. Head 

 hairs: Preantennal (A) multiple, barbed, extending near insertion of antennal 

 tuft; lower (B) and upper (C) usually 3-branched, barbed, extending beyond 

 preclypeus; postclypeal (d) single, rather long; sutural (e) and trans-sutural 

 (f) double or multiple; supraorbital single or double. Thorax clothed with fine 

 spicules. Upper lateral abdominal hairs usually 3 to 4-branched on segments 

 I and II, usually double on III to VI. Comb of eighth segment of numerous 

 scales in a patch; individual scale somewhat rounded apically, fringed with 



Fig. 134. Larva of Culex nigripalpus Theobald. A, Terminal segments. 

 B, Pecten tooth. C, Comb scale. D, Head. 



