OF WASHINGTON, VOLUME XI, 1909. 173 



DESCRIPTION OF THREE NEW AMERICAN 

 MOSQUITOES. 



[Diptera, Culicidae.] 

 BY HARRISON G. DYAR AND FREDERICK KNAB. 



Wyeomyia intonca, new species. 



Male. Prothorax, mesonotum, and scutellum clothed with blackisli 

 scales with blue and bronzy reflections; abdomen with the venter white. 

 separated from the dark dorsum in a straight line; occiput clothed 

 with dark scales; proboscis of moderate length, dark-scaled; mid 

 tarsi with the tip of the second, the third to fifth jo'nts white, except 

 for a narrow area along the upper side ; fore and hind tarsi dark. 

 The genitalia have the outer angles of the side pieces produced in 

 the form of a long arm, twice as long as the basal part of the side 

 piece, each with three distinct tubercular areas bearing dense hair 

 tufts ; clasp filament rather long, but slender and simple, with angularly 

 expanded tip. 



Type No. 12744, U. S. National Museum. 



One male, Empire, Canal Zone, Panama, March 2, 1009, 

 bred from a larva in the water in the leaves of a Bromeliaceous 

 plant on a fallen tree on the bank of the Comacho River 

 (A. H. Jennings). 



The species is nearly allied to W . circumcincta D. & K., but 

 differs in the coloration of the tarsi and in the male genitalia. 

 The female presumably has all the tarsi black. 



Wyeomyia rolonca, new species. 



Male. Occiput, prothorax, mesonotum. and scutellum clothed with 

 dark scales ; abdomen with the colors separated on the sides in a 

 straight line ; proboscis long and slender, expanded at the tip ; m i 'd 

 tarsi with a narrow white line on the first joint below, the stripe 

 becoming wider distally, the third to fifth joints distinctly white below; 

 hind tarsi with the fourth and fifth joints white below, narrowly 

 interrupted at the tip of the fourth, a small white spot at the base of 

 the third joint. The male genitalia are of the type commonly found 

 in the Bromelia Wyeomyia, the clasp filament with long slender stem 

 its tip expanded and trilobed, the mid lobe broadly expanded, the 

 side lobes each narrow, with sharp, pointed tips ; the mid lobe is 

 crossed by a corrugated area bearing a row of spines, and from the 

 lower termination of this area a minutely pilose filament projects. 



Type No. 12745, U. S. National Museum. 

 One male, Upper Pequini River, Panama, March 24, 1909, 

 two miles up the Rio Juanita, bred from a larva in the water 



