274 American Midland Naturalist Monograph No. 3 



of subventral tufts inserted beyond pecten, the individual hairs Uttle if any 

 longer than diameter of siphon (apical tuft inserted somewhat laterally). Anal 

 segment nearly twice as long as wide, completely ringed by the dorsal plate; 

 lateral hair usually double; dorsal brush consisting of a long lower caudal hair 

 and a shorter 4-branched upper caudal tuft on either side; ventral brush large, 

 with 2 or 3 small tufts preceding the barred area; gtlls 4, about as long as the 

 segment, tapered. 



distribution. — Widely distributed in North America, Europe and central 

 Asia. Southern States: Alabama (170); Arkansas (30); Florida (52); Georgia 

 (96); Kentucky (140); Louisiana (96); Mississippi (97); Missouri (1); 

 North Carolina (166); South Carolina (64); Tennessee (170); Virginia (49). 

 Other States: California (66); Colorado (128); Connecticut (21); Delaware 

 (106); District of Columbia and Illinois (52); Indiana (76); Iowa (155, 

 156); Kansas (79); Maine, Maryland and Massachusetts (52); Michigan 

 (88); Minnesota (131); Montana (112); Nebraska (178); New Hampshire 

 (105); New Jersey (77); New Mexico (9); New York (52); Oklahoma 

 (159); Pennsylvania (52); Rhode Island (99); Texas (108); Wisconsin 

 (48). 



bionomics. — Culex apicalis is not known to feed on man but has been 

 observed feeding on cold-blooded animals, particularly frogs. The adults are 

 rarely taken inside dwellings but are usually found amongst vegetation and in 

 shelters near their breeding places. The larvae are found in semi-permanent 

 and permanent pools, in streams, and in swamps. Larvae and adults occur 

 throughout the year in the southern portion of its range but are rarely taken in 

 southern Florida (4th Sv. C. Med. Lab. records, 1942-1944, unpublished). 



Genus Deinocerites Theobald^ 



Deitwceriies Theobald. 1901, Mon. Culic, 2:215. 



The genus Deinocerites contains a few species which are confined to the 

 Caribbean area, the Gulf of Mexico and adjacent regions. All the known species 

 breed in saltwater in crab holes and the adults rest in the upper part of the 

 holes. The genus is represented by a single species, D. cancer, in the southern 

 United States. 



salient characters. — Adult: The adults resemble Culex but have the 

 antenna much longer than the proboscis; the first flagellar segment is long in 

 both sexes. Antennae and palpi are long in both males and females. Cerci 

 prominent. Male Terminalia: Ninth tergite with two large elongated lobes. 

 Tenth sternite with a crown of close-set teeth. Phallosome strongly toothed. 

 Basistyle stout. Dististyle short, pubescent, with two terminal claws. Larva: 

 Head with a prominent triangular pouch on either side. Comb of eighth seg- 

 ment consists of many scales in a patch. Siphon of moderate length, with 

 pecten well developed. Dorsal plate sclerotized dorsally and ventrally, indis- 

 tinct laterally. Two short, bulbous anal gills present. 



1 See Edwards (1932) or Dyar (1928) for synonymy. 



