AEDES MEDIOVITTATA 821 



The larvae live in the water in hollow trees and in broken bamboo. Mr. 

 Busck and Mr. Jennings got them in such situations and Mr. Jennings also got 

 them several times in his bamboo-traps. 



Central America. 



Bluefields, Nicaragua (W. F. Thornton) ; Chagres Eiver, Panama, May 20, 

 and June 7, 1907 (A. Busck) ; Caldera Island, Porto Bello Bay, Panama, June 

 1, 1908 (A. H. Jennings) ; Tabernilla, Canal Zone, Panama, July 30, August 

 14, December 22, 1908 (A. H. Jennings) ; Alhajuela, Chagres Eiver, Canal 

 Zone, Panama, March 18, 1909 (A. H. Jennings). 



AEDES MEDIOVITTATA (Coquillett) Dyar & Knab. 



Stegomyia mecliovittata Coquillett, Can. Ent., xxxviil, 60, 1906. 



Oymnometopa mediovittata Coquillett, Proc. Ent. Soc. Wash., vU, 183, 1906. 



Aedes mediovittata Dyar & Knab, Journ. N. Y. Ent. Soc, xlv, 196, 1906. 



Aedes mediovittata Dyar, Proc. Ent. Soc. Wash., viil, 15, 1906. 



Gymnometopa mediovittata Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 25, 



1906. 

 Aedes mediovittata Dyar & Knab, Proc. Biol. Soc. Wash., xix, 164, 1906. 

 Gymnometopa mediovittata Theobald, Mon. Culic, Iv, 210, 1907. 

 Aedes uncatus Grabham, Can. Ent., xxxlx, 25, 1907. 



Aedes mediovittata Pazos, Anal. Acad. Cien. m§d., fis. y nat. Habana, xlv, 418, 1908. 

 Aedes mediovittata Pazos, San. y Ben., ii, 48, 323, 1909. 

 Gymnometopa mediovittata Theobald, Mon. CuUc, v, 219, 1910. 

 Aedes uncatus Theobald, Mon. Culic, v, 596, 1910. 



Obiginai, Description of Stegomyia mediovittata: 



Proboscis black, unmarked, palpi black scaled, in the male the bases of the joints 

 white scaled, in the female only the apices of the joints are white; inner side of 

 first antennal joint white scaled, scales of occiput black, a median line of white ones, 

 those on the sides yellow and white. Thorax brown scaled, a median line of white 

 ones, which is divided into two branches on the posterior fifth of the mesonotum; 

 on either side of this line is a stripe of dark brown scales, followed by a line of 

 light yellow scales, which become whitish on the posterior portion of the meso- 

 notum ; a broadly Interrupted line of white scales midway between this line and the 

 insertion of the wing, and a similar line just above this Insertion, a spot of white 

 scales on the humerus, and several similar spots on the pleura; scutellum with a 

 spot of white scales on each of its three lobes. Abdomen black scaled, with a bluish 

 reflection, a spot of white ones near base of sides of the last four segments, and a few 

 white scales at apex of the last segment. Legs black scaled, a line of white ones on 

 anterior and posterior sides of each femur, a spot above middle of anterior side 

 of each tibia, the base of the first two joints of the front and middle tarsi and the 

 base of each joint of the hind ones white scaled; tarsal claws of the female simple, 

 those of the front and middle tarsi of the male with one tooth under one of the 

 claws, none under the other, claws of the hind tarsi simple. Wings hyaline, the 

 scales black. Length about 3 mm. 



San Domingo, West Indies. Thirty-four specimens, collected by Mr. August 

 Busck. Type No. 9138, U. S. National Museum. 



Okioinal Desceiption or Aedes uncatus: 



Close to Stegomyia mediovittata, Coq., from Santo Domingo (Can. Ent., Feb., 1906, 

 p. 60) , but the subdorsal thoracic lines are made up of light yellow scales through- 

 out their whole length. Full-grown larva with six or seven separate comb scales, 

 each scale with a simple stout curved spine arising from a pear-shaped base. The 

 larvae of this form, collected from hollow trees, have been sent to me from several 

 localities near Kingston (Waverley Estate; Constant Spring: woods above Rock- 

 fort) . In all the specimens examined the comb scales had simple spines unlike the 

 Santo Domingan form, which has trifld spines (Dyar and Knab, Jour. N. Y. Ent. 

 Soc, XIV, PI. V, fig. 11). I am indebted to Dr. H. G. Dyar for comparing the larvse 

 and 'adults of these two species. Bred specimens vary greatly in size, the largest 

 attaining about 6 mm. in length. The females bite blood without hesitation. 



Desceiption or FEM.iiE, Male, Laeva, and Pupa of Aisdes mediovittata: 



FemaZe.— Proboscis rather long, slender, cylindrical, uniform; labellse 

 conically tapered; vestiture black with a few pure white contrasting scales 



