624 MOSQUITOES OF NORTH AMERICA 



slight spines near base; two filaments near tip; an outer row of cilia from a 

 collar ; twelve filaments on outer edge, running close to dentition ; dentition of 

 four teeth on a process, the first very long and sharp, curved, the fourth next 

 longest; a fiJament before, others within, small double teeth at base; process 

 below cleft-furcate toward basal side, with thin hair patches ; basal angle broad ; 

 three separated hairs within ; a row of hairs at base. Maxilla conically hemi- 

 spherical, tip rather sharp, divided by a linear suture ; inner half sparsely haired 

 on margin with a row of tufts along edge ; a tuft of long hairs at tip, with shorter 

 plumose tipped ones within ; outer half with a few long hairs next the palpus, the 

 two filaments not very near the suture and subapical ; palpus short, with five 

 digits, of which two are very small. Thorax rounded, wider than long; hairs 

 abundant, the single lateral hairs long. Abdomen moderate, anterior segments 

 shorter; lateral hairs triple on first segment, double on second, single on third to 

 sixth, longer posteriorly ; secondary hairs in long substellate bunches on fifth to 

 seventh segments. Tracheal tubes broad, band-shaped, flexuous, slightly widened 

 in posterior end of thorax. Air-tube stout, tapered outwardly, two and a half 

 times as long as broad ; pecten reaching well beyond middle, a large hair-tuft 

 at middle and well within pecten ; single pecten-tooth a long spine with wide 

 base, bearing three short branches. Lateral comb of eighth segment of rather 

 few scales in a triangular patch; single scale elliptical, pointed at base, blunt 

 without, fringed evenly with very long slender spinules. Anal segment longer 

 than broad, ringed by the plate; dorsal tuft a hair and brush on each side; a 

 double lateral hair; ventral brush well developed, confined to the barred area. 

 Anal gills long, twice as long as the segment, slightly constricted at base and 

 outer third, the terminal third tapered to a point. 



Life history and habits unknown. 



Southern United States and Mexico. 



Brownsville, Texas, June 16 (C. H. T. Townsend) ; New Orleans, Louisiana, 

 September 24, 1902 (G. E. Beyer) ; Belzona, Mississippi, August 4, 1904 (H. S. 

 Barber) ; Natchez, Mississippi, June 9, 1910 (A. Fleming) ; Scott, Pulaski 

 County, Arkansas, September 23, 1909 (J. K. Thibault, jr.) ; Baton Eouge, 

 Louisiana, November, 1902 (H. A. Morgan) ; San Bias, Mexico, November, 

 1903 (A. Duges). 



Aedes himaculatus and A. fulvus are remarkable for the predominating 

 bright yellow color of both integument and vestiture, as well as the highly 

 polished and but sparsely scaled thorax ornamented with black pigment spots. 

 In addition the form of the body is more slender and the legs longer than in 

 most Aedes, while the female palpi are slender and fully one-third the length 

 of the rather long proboscis. Some of the specimens included by us under 

 Aedes fulvus have the scales on the hind legs raised in the manner of the 

 larger species of Psorophora. We find no such raised scales in our material 

 of Aedes himaculatus, but our specimens are few and not reared. It is possible 

 that these raised scales are very dehiscent and would be found present in fresh 

 specimens. 



AEDES FULVUS (Wiedemann) Knab. 



Culex fulvus Wiedemann, Aussereur. zweifl. Ins., i, 546, 1828. 

 Gulex ochripes Macquart, Dipt, exot., Suppl. 4, part 1, 315, 1850. 

 Culex flavicosta Walker, Ins. Saund., 431, 1856. 

 Culex flavicosta Giles, Handb. Gnats or Mosq., 194, 265, 1900. 

 Culex fulvus Giles, Handb. Gnats or Mosq., 190, 210, 1900. 

 Culex ochripes Giles, Handb. Gnats or Mosq., 201, 334, 1900. 

 Twniorhynchus fulvus Theobald, Mon. Culic, ii, 208, 1901. 

 Tceniorhynchus fulvus Giles, Handb. Gnats or Mosq., 2 ed., 361, 1902. 

 Culex ochripes Giles, Handb. Gnats or Mosq., 2 ed., 470, 1902. 

 Culex fulvus Giles, Handb. Gnats or Mosq., 2 ed., 394, 1902. 

 Twniorhynchus fulvus Theobald, Mon. Culic, iii, 237, 1903. 



