AEDES SPENCEEII 723 



Legs rather long and slender; femora pale yellowish beneath, black above and 

 at tip ; tibise and tarsi black with a slight greenish luster ; extreme tips of tibiae 

 yellowish on the inner side ; base of first tarsal joint of hind legs yellowish on 

 inner side. Claw formula, 1.1-1.1-1.1. 



Length : Body about 4.5 mm. ; wing 4 mm. 



Life history and habits unknown. 



Tropical America. 



Santo Domingo, West Indies, August, 1905 (A. Busck) ; Trinidad, June, 1905 

 (A. Busck) ; Eupununi, British Guiana (K. S. Wise) ; Boeas del Toro, Panama, 

 September 28, 1903 (P. Osterhout) ; Bluefields, Nicaragua (W. P. Thornton). 

 Eeported also from Counani, French Guiana (ISTeveu-Lemaire) . 



AEDES SPENCERII (Theobald) Dyar. 

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

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

 Qrabliamia spencerii Theobald, Mon. Culic, 111, 250, 1903. 

 Orabhamia spencerii Ludlow, Joum. N. Y. Ent. Soc, xi, 143, 1903. 

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

 Orabhamia spencerii Theobald, Genera Ins., Dipt., fasc. 26, 23, 1905. 

 Culex spenceri Blanchard, Les Moustiques, 277, 1905. 

 Grahhamia spenceri Blanchard, Les Moustiques, 397, 1905. 



Ochlerotatus spenceri Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 18, 1906. 

 Orabhamia spenceri Theobald, Mon. Culic, iv, 285, 1907. 

 Aedes spenceri Dyar, Proc. U. S. Nat. Mus., xxxil, 125, 1907. 

 Aedes spenceri Knab, Journ. N. Y. Ent. Soc, xv, 216, 1907. 

 Aedes spenceri Knab, Smiths. Misc. Colls., quart, iss., 1, 541, 1908. 

 Orabhamia spencerii Theobald, Mon. Culic, v, 290, 1910. 



Omginal Desckiption of Culex spenceeh: 



Thorax black, with narrow golden curved scales in the middle, the sides with 

 broader, creamy-coloured ones, and two short, parallel paler lines behind and more 

 pale ones in front of the scutellum. Abdomen covered with creamy and white 

 scales, with large, black-scaled patches on each side of the middle line. Liegs 

 brown, pale scales scattered about on the tibiae and metatarsi; femora mostly pale 

 ochraceous, with a few black scales; ungues uniserrated. 



5. Head brown, with pale golden curved scales and yellowish upright forked ones; 

 a pale border round the eyes, small, flat, creamy scales at the sides, and then flat 

 dark ones; antennae black, basal joint with a large tuft of pale scales on the inside; 

 second joint testaceous at the base; palpi densely black scaled, sometimes grey 

 towards the tip. 



Thorax black, covered with narrow, golden-brown scales in the middle, the sides 

 with rather broader creamy-coloured scales and two short, parallel, paler lines of 

 scales behind, running half across the mesothorax, and similar pale ones in front 

 of the scutellum; dense golden bristles over the roots of the wings; scutellum dark 

 brown, with pale, curved, creamy scales and golden bristles; metanotum deep brown; 

 pleurae dark brown, with dense white scales. 



Abdomen covered with black and creamy-white scales, the white predominating, 

 the black scales forming more or less distinct lateral patches, indistinct on the last 

 few apical segments; the posterior borders with very pale golden scales; venter 

 white scaled. 



Legs unhanded; coxae and femora pale ochraceous, almost white, a few black 

 scales above and at the apex; knee spots small, white; tibiae covered with pale 

 brown, ochraceous, and dull white scales, with black bristles, dark towards the apex; 

 metatarsi and tarsi bronzy-brown, a few white scales towards the base of the former; 

 fore and mid ungues black, with a sharp, short, blunt tooth near the base; hind 

 ungues also with small teeth. 



Wings with yellowish veins and black and white scales as follows: costa (except 

 at the base), flrst, second, and flfth long veins dark scaled, also the apices of the 

 fork of the second posterior cell, the others with pale creamy-yellow scales; first 

 sub-marginal cell very short, a little longer and about half the width of the second 

 posterior cell; its base nearer the apex of the wing than the base of the second 

 posterior cell; its stem equal in length to the cell; stem of the second posterior 

 longer than the cell; posterior cross-vein about its own length distant from the mid 

 cross-vein. Halteres ochraceous wi,th a slightly fuscous knob. 



Length. — 4 mm. 



Habitat.— Manitoha, Canada (W. I. Spencer) (19. 1. 1900). 



Time of capture. — July. 



