AEDES LAZARENSIS 733 



Holmes) ; Saxeville, Wisconsin, May, 1910 (B. K. Miller) ; Winnipeg, Mani- 

 toba, June 22, 1907 (F. Knab) ; east coast of Lake Winnipeg, Manitoba; 

 Oxbow, Saskatchewan, June 17, 1907 (F. Knab) ; Kaslo, British Columbia, 

 June 11, 1903 (H. G. Dyar). 



Aedes fuscus is closely related to, if not identical with, the European Aedes 

 cinereus Meigen (Syst. Beschr. d. bek. europ. zweifl. Ins., i, 13, 1818). We 

 have had no opportunity to compare specimens, but the male genitalia of the 

 European form, as figured by Eysell (Abh. u. Eer. Ver. ISTaturk. Kassel, xlviii, 

 295, fig. 6, 1903), show the same peculiar structure as our species and we have 

 been unable to detect any differences. Recently De Meijere has described and 

 figured the larva and pupa of the European species (Tijdschr. v. Ent., liv, 

 148-149, pi. X, figs. 25-28, 1911) and we find that these agree in every detail with 

 our species.* 



The description of Culex pallidohirta is founded upon two abnormally colored 

 female specimens of Aedes fuscus. In spite of the peculiar metallic luster of the 

 vestiture, the lateral abdominal stripes, so characteristic of fuscus, can be dis- 

 tinguished. Dyar and Knab surmise that these peculiarly colored specimens 

 were produced by the action of cold upon the newly formed pupae and they have 

 shown that similar aberrations occur with other species (Proc, Ent. Soc. Wash., 

 xii, 81-82, 1910). 



AEDES LAZARENSIS (Felt & Young) Dyar & Knab. 



Culex lazarensis Felt & Young, Science, n. s., xx, 312, 1904. 



Culex lazarensis Felt, Bull. 79, N. Y. State Mus., 309, 1904. 



Culicada lazarensis Felt, Bull. 79, N. Y. State Mus., 391&. 1904. 



Culicada lazarensis Felt, Bull. 97, N. Y. State Mus., 448, 478, 1905. 



Qrabhamia lazarensis Dyar, Proc. Ent. Soc. Wash., vii, 48, 1905. 



Aedes lazarensis Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 202, 1906. 



Ochlerotatus lazarensis Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 19, 1906. 



Ochlerotatus lazarensis Dyar, U. S. Dept. Agr., Bur. Ent., Circular 72, 6, 1906. 



Culicada lazarensis Theobald, Mon. Culic, iv, 360, 1907. 



Culicada lazarensis Theobald, Mon. Culic, v, 295, 306, 1910. 



Original Description of Culex lazarensis: 



A larva somewhat resembling that of C. impiger was met with in a cold mountain 

 pool at Elizabethtown, N. Y., June 9, adults emerging on the tenth and closely resem- 

 bling those of C. impiger. The larva may be easily recognized by the conspicuous, 

 triangular comb composed of about sixty rather large scales, each tipped with from 

 four to seven stout, equal spines. The air tube is short, a little over twice as long 

 as broad, slightly swollen at the basal third and bearing a double row of posterior 

 pecten, each consisting of about twenty short, black, stout spines. The adult, Culex 

 lazarensis n. sp., may be distinguished from C. impiger by its large size, it being 

 6 to 7 mm. long, and the vittate thorax with two dark lines. The wing of the female 

 C. lazarensis is longer, the second longitudinal vein, particularly at its fork, is 

 straighter, and the second fork cell is shorter and broader than in C. impiger. There 

 are also marked differences in the male genitalia. 



Description of Female, Male, and Larva of Aedes lazarensis: 



Female. Proboscis long, slender, subeylindrical, uniform, labellas conically 

 tapered ; vestiture black ; setae minute, curved, black, those on the labellge more 

 prominently outstanding. Palpi short, about one-fifth as long as the proboscis ; 

 vestiture black; setffi moderate, bristly, black. Antennas with the joints sub- 

 equal, rugose, black, pilose, second joint somewhat enlarged, brown at base ; tori 

 subspherical, with a cup-shaped apical excavation, luteous, with a patch of small 

 white scales on inner side; hairs of whorls moderate, sparse, black. Clypeus 

 roundedly triangular, prominent, nude, black. Eyes black. Occiput black, 

 clothed with narrow curved pale brownish-yellow scales on the vertex, broad 



* At our suggestion Mr. F. W. Edwards of the British Museum has compared material from 

 America and Europe and finds that there Is no difference. Consequently Aedes fuscus should be 

 placed as a synonym of ASdes cinereus Meigen. The information, unfortunately, comes too late 

 to make the necessary changes in the text. 



