92 MOSQUITOES OF NORTH AMEEICA 



tarsi with apical three-fourths of third and all of fourth joints white beneath ; 

 hind tarsi with basal two-thirds of fifth joint silvery white beneath. Claw 

 formula, 0.0-0.0-0.0. 



Length : Body about 3.5 mm. ; wing 2.8 mm. 



Mr. Busck says : " The adults were taken in bamboo woods in the act of 

 biting," flying in the daytime. 



Panama. 



Tabernilla, Canal Zone, adult captured (A. Busck). 



WYEOMYIA CLASOLEUCA Dyar & Knab. 



Wyeomyia clasoleuca Dyar & Knab, Proc. U. S. Nat. Mus., xxxv, 68, 1908. 

 Wyeomyia clasoleuca Theobald, Mon. Culic, v, 626, 1910. 



Original Description of Wyeomyia clasoleuca: 



Female. Proboscis moderately long and slender, the apical third much swollen, 

 black-scaled; palpi black-scaled; occiput dark-scaled, without light margin to the 

 eyes; prothoracic lobes dark metallic blue-scaled with purple reflection, the apices 

 without lighter scales; mesonotum dark dull brown-scaled, nearly black; abdomen 

 dark-scaled above, with obscure bronzy and bluish reflections, beneath silvery white- 

 scaled, the colors separated on the sides in a straight line; legs dark-scaled, with 

 bronzy and blue reflection; on the hind legs the fourth tarsal joint is silvery white- 

 marked beneath from the base nearly to the apex, the fifth tarsal joint silvery white- 

 marked beneath throughout; fore and mid tarsi entirely dark. Length, 3.5 mm. 



Two specimens, Caldera Island, Porto Bello Bay, Panama. (A. H. Jennings.) 



Type. Cat. No. 11990, U. S. N. M. 



Description of Female of Wyeomyia clasoleuca (Male and Larva Unknown) : 



Female. Proboscis moderate, the tip expanded, the labelte small, rounded, 

 with fine outstanding sette ; vestiture bronzy black, brighter bronzy beneath. 

 Palpi short, flattened, one-fifth as long as proboscis, bronzy black. Antennae 

 moderate, the joints slender, subequal, rugose, coarsely pilose, black; tori sub- 

 spherical, with a cup-shaped apical excavation, dark brown, with a white prui- 

 nosity; hairs of whorls long, rather sparse, black. Clypeus rounded, convex, 

 blackish, whitish pruinose. Eyes separated at vertex by a narrow wedge, bluish 

 black. Occiput clothed with flat dark-brown scales with a blue reflection, a 

 large white spot at lower part of sides ; two setse at vertex and smaller ones along 

 margins of the eyes. 



Prothoracic lobes elliptical, distinctly separated, clothed with flat dark 

 metallic blue and violaceous scales ; a row of setse along anterior margin. Meso- 

 notum clothed with elliptical, flat dark-brown scales with bronzy and blue reflec- 

 tion; scales of front margin pale shiny, those below lateral angles bronzy 

 iridescent; bristles over wings dark brown. Scutellum trilobate, with vestiture 

 similar to and continuous with that of mesonotum, each lobe with a small tuft of 

 black bristles. Postnotum elliptical, prominent, dark brown, a group of small 

 setse near posterior margin. Pleurge brown, coxse luteous, clothed with elliptical, 

 flat silvery-white scales. 



Abdomen subcylindrical, truncate apically, and with many long light-brown 

 terminal seta3; dorsal vestiture black with a slight metallic reflection; venter 

 yellowish white, the colors separated at sides in a straight line. 



Wings moderate, hyaline ; petiole of second marginal cell one-third as long as 

 its cell, that of second posterior cell as long as its cell ; basal cross- vein distant 

 nearly its own length from anterior cross-vein; scales of veins dense, short, 

 broadly ovate, mostly obliquely subtruncate, black, with a slight bronzy reflection 

 on costa. Hal teres whitish with black knobs. 



Legs rather long and slender, black, with a bronzy reflection, the femora 

 whitish beneath; tibise and tarsi with a brighter bronzy luster beneath; hind 



