AEDES VITTATA 691 



branches ; a large tuft at middle of tube beyond peeten. Lateral comb of eighth 

 segment of many scales in a triangular patch; single scales elliptical, fringed 

 with long spinules, the terminal one much longer and stouter, as long as the 

 body of scale. Anal segment about twice as long as wide, the dorsal plate 

 reaching well down the sides, with a shallow lateral emargination ; dorsal tuft a 

 brush and hair on either side; a single long lateral hair; ventral brush well 

 developed, long, with small tufts preceding the barred area toward base. Anal 

 gills moderate, a little longer than the segment, tapered, bluntly pointed. 



The larvae appear in pools in the early spring, hatching from over-wintering 

 eggs. There is but a single brood in the year. The habits, so far as known, are the 

 same as those of Aedes fitchii, the larvae being of rather slow development and 

 often found in pools of a more permanent nature. The adult females probably 

 form part of those that linger in the forests until midsummer, and bite readily 

 by day. These females will bite as long as they are able to fly, even after they 

 have deposited all their eggs. They do not tend to enter houses, except perhaps 

 when these are very close to trees, but in the woods are very troublesome. 



Northeastern North America. 



Dublin, New Hampshire (A. Busck) ; Springfield, Massachusetts, larvae, May 

 11, 1905 (F. Knab) ; Longmeadow, Massachusetts, April 16, 1905 (Dyar and 

 Knab) ; Plattsburg, New York, April 34, 1905 (H. G. Dyar) ; Saxevil'le, Wis- 

 consin, May 22, 1909 (B. K. Miller) ; White Eiver, Ontario, June 25, 1907 (F. 

 Knab) ; New Brunswick, New Jersey (J. A. Grossbeck). Eeported also from 

 Karner, New York (Felt). 



Only our breeding-records and those from males are given, as captured 

 females can not be identified; the coloration varies in such a manner that speci- 

 mens can not be distinguished from fitchii and stimulans. Mr. Knab did not 

 take this species in Saskatchewan, but we think that is an accident only, for the 

 species probably has the same range as the others. It is represented in the north- 

 west by an allied form, Aedes sansoni. We had intended following Dyar in 

 applying Walker's name stimulans to this species, as it is the commonest of the 

 three eastern species that are alike as adults and thus most probably the species 

 Walker had before him when he published the name. However, Speiser had 

 earlier referred the name to subcantans Felt, and as there is no means of prov- 

 ing to which species Walker's specimen really belongs, we are obliged to follow 

 Speiser, as he has priority in restricting the name. 



AEDES VITTATA (Theobald) Dyar. 



Grabhamia vittata Theobald, Can. Ent, xxxv, 313, 1903. 



Orabhamia vittata Blanchard, Les Moustlques, 397, 1905. 



Oohlerotatus vittata Coquillett, U. S. Dept. Agr., Bur. Ent, Tech. Ser. 11, 20, 1906. 



Orabhamia vittata Theobald, Mon. Culic, iv, 306, 1907. 



Aedes vittatus Dyar (in part), Proc. U. S. Nat. Mus., xxxii, 126, 1907. 



Grabhamia vittata Theobald, Mon. Culic, v, 284, 1910. 



Obioinal Desckiption of Grabhamia vittata: 



Thorax clothed with rich reddish-brown scales and with two narrow broken 

 creamy lines and a few pale scales at the sides, especially over the roots of the wings; 

 pleura with dense gray scales. Abdomen blackish-brown with basal white bands; 

 venter white. Legs brown, base of femora pale, remainder of femora and tibiae 

 mottled with white scales ; some of the tarsi with basal white bands ; last hind tarsal 

 black; ungues of $ all uniserrated; of c? all uniserrated. 



9. — ^Head brown with narrow curved yellowish scales, palest in the middle, with 

 numerous upright yellow and black forked scales, flat creamy-white lateral scales 

 with a round patch of flat black ones in the middle of each white area, a pale border 

 along the eyes, black bristles projecting over them, except in the middle where the 

 bristles are golden; antennae deep brown, basal joint and base of the second joint 

 bright testaceous; proboscis deep brown; palpi deep brown towards the apex; joints 

 testaceous, with a few golden and black hairs, apical joint long, as long as the rest 

 of the palpi. Thorax deep brown, clothed with bright reddish-brown narrow curved 



