INSECUTOR INSCITI^ MENSTRUUS 75 



Species 7 



Aedes (Ochlerotatus) fisheri Dyar. 



A'edes fisheri Dyar, Ins. Ins. Mens., v, 19, 1917. 

 Aedes fisheri Dyar, Ins. Ins. Mens., viii, 23, 1920. 

 A'edes fisheri Dyar, Ins. Ins. Mens., viii, 169, 1920. 



The basal lobe of the side-piece of the male hypopygium 

 (PI. I, fig. 5) has the setae coarse, the spine slender and con- 

 fused in a group of similar setae. The larva has the anal seg- 

 ment not ringed by the plate as in aboriginis, but the air-tube 

 has detached teeth, a character unknown elsewhere in the 

 punctor group. The species has so far been found only in the 

 high. Sierras of California, at the 7,000 foot level. The male is 

 peculiar in having the mesonotum hairy as in the arctic spe- 

 cies, although this character is not shared by the female. The 

 palpi in the male, also, are distinctly shortened from the usual 

 condition. 



Series 2 



In this series, the spine of the basal lobe of the side piece of 

 the male hypopygium is very much thickened, but of a thin 

 transparent consistency (PI. I, fig. 6). The basal lobe itself is 

 expanded, its outer margin free from the side-piece. There 

 does not seem to be any specific modification of this structure 

 in the following forms. Two of the species, spencerii and 

 idahoensis, are separable by the peculiarly colored wing-scales, 

 alternate veins being black and white scaled. These inhabit 

 prairie country inland. The others have the scales not so con- 

 trasted in color. These are all flood species, breeding in pools 

 filled by the high water of rivers or lakes. 



Species 8 



Aedes (Ochlerotatus) spencerii Theobald. 



Culex spencerii Theobald, Mon. Culic, ii, 99, 1901. 

 Culex spencerii Giles, Handb. Gnats or Mosq., 2 ed., 431, 1902. 

 Grabhamia spencerii Theobald, Mon. Culic. iii, 250, 1903. 

 Grabhamia spencerii Ludlow, Journ. N. Y. Ent. Soc, xi. 143, 1903. 

 Culex spenceri Dyar, Proc. Ent. Soc. Wash., vi, 41, 1904. 

 Grabhamia spencerii Theobald, Gen. Ins., Dipt, fasc. 26, 23, 1905. 

 Culex spenceri Blanchard, Les Moust., 277, 1905. 



