188 American Midland Naturalist Monograph No. 3 



double, sometimes triple; upper (C) single; sutural (e), trans-sutural (f), and 

 supraorbital usually triple. Upper lateral abdominal hairs usually single on 

 segments III to V. Comb of eighth segment consiting of about 30 scales in a 

 patch; individual scale rounded apically and fringed with subequal spinules. 

 Siphon about twice as long as wide; pecten reaching beyond middle of siphon, 

 last tooth widely spaced; subventral tuft large, multiple, heavily barbed, in- 

 serted within the pecten. Anal segment slightly longer than wide, completely 

 ringed by the dorsal plate; lateral hair usually single or double; dorsal brush 

 consisting of a long lower caudal hair and a shorter multiple upper caudal tuft 

 on either side; ventral brush large, heavy, restricted to the barred area; gills 4, 

 longer than the segment, pointed. 



DISTRIBUTION. — Southern States: Alabama (125); Arkansas (179); Flor- 

 ida (96); Georgia (148); Kentucky (140); Louisiana (149); Mississippi 

 (52); North Carolina (166); South Carolina (96); Virginia (49). Other 

 States: Oklahoma (159); Maryland (149); Texas (141). 



BIONOMICS. — The females are fierce biters. Adults are occasionally taken in 

 biting, resting and light trap collections. Larvae occur in temporary pools 

 following rains throughout the summer months. 



Aedes (Ochlerotatus) grossbecki Dyar and Knab 



Aedes grossbeclfi Dyar and Knab, 1906, Jour. N. Y. Ent. Soc, 14:201. 



ADULT FEMALE. — Medium sized to rather large species. Head: Proboscis 

 long, dark, with a few white scales; palpi short, dark, speckled with white. 

 Occiput clothed dorsally with white lanceolate scales arranged in a broad 

 median patch and projecting forward between the eyes; this median patch 

 bounded dorso-laterally by dark scales. Lateral region of occiput clothed with 

 broad appressed white scales enclosing a dark-scaled patch. Numerous erect 

 forked scales present, those on central portion of occiput white. Thorax: In- 

 tegument of scutum dark brown to black, broadly margined on either side by 

 white lanceolate scales; a wide median longitudinal stripe of narrow darker 

 scales present, originating near anterior margin of scutum and extending to 

 the white-scaled prescutellar space; the anterior half of this longitudinal stripe 

 of nearly uniform width, pale golden-brown; the posterior half of this longi- 

 tudinal stripe widening slightly, dark bronzy-brown; a small patch of golden- 

 brown to dark -brown scales usually present in submedian position above and 

 slightly anterior to wing bases. Posterior pronotum clothed with pale golden- 

 brown and white lanceolate scales. Abdomen: First tergite white-scaled; remain- 

 ing tergites each with a broad basal band of white to pale-yellow scales; apical 

 half of each tergite black scaled, speckled with pale scales. Venter primarily 

 white scaled, spotted with dark. Legs: Femora, tibiae, and first segment of 

 tarsi clothed with intermixed black and pale scales, the pale scales usually pre- 

 dominating on the femora; white knee spots present. Segments of hind tarsus 

 each with a broad basal white ring; segments 1 to 4 of fore- and mid-tarsi with 

 narrower basal white rings than hind tarsus; segment 5 of fore- and mid-tarsi 

 entirely dark or with white ring greatly reduced. Wing: Scales very broad, 

 deltoid, intermixed dark and white. 



