158 MOSQUITOES OF NORTH AMERICA 



beneath brassy, the middle legs silvery beneath on the third and fourth joints, hind 

 legs silvery beneath on the last joint. Length, 3 mm. 



?. — Similar to the male. 



Three specimens, Boqueron River, Panama, and Tabernilla, Canal Zone, Panama 

 (August Busck, collector), bred from larvae in water in the leaves of Bromelias. 



Type. — No. 10855, U. S. National Musetmi. 



Obiginai, Deschption of Wteomtia dtmodoba: 



Female. — Proboscis very long and slender, as in Phoniomyia, but slightly swollen 

 at the tip, black-scaled; palpi black-scaled; occiput dark-scaled, with blue and green 

 Iridescence, margin of the eyes not distinctly light-scaled, and without white spot 

 on the vertex; prothoracic lobes dark-scaled, with obscure bluish luster, without 

 light scales at the apices; mesonotum obscurely brown-scaled; abdomen dark-scaled 

 above, with bluish reflection, white-scaled beneath, the colors separated on the sides 

 in a straight line; wings with the scales on the veins elongate, rather narrow; 

 legs dark-scaled, with bronzy and blue reflection, fore and mid tarsi without white 

 beneath; hind tarsi with the fourth and fifth joints silvery white-marked beneath, 

 the fourth joint black at the apex, the white on the fifth joint continuous. 

 Length, 3.5 mm. 



Two specimens, Caldera Island, Porto Bello Bay, and Fort San Felipe, Porto 

 Bello, Panama, bred from larvae in water between the leaves of bromeliaceous plants. 

 (A. H. Jennings.) 



Type.— Cat. No. 11991, U. S. N. M. 



The species resembles W. clasoleuca Dyar and Knab in coloration, but the long 

 proboscis, almost like that of a Phoniomyia, and the narrow wing scales will easily 

 separate it. 



DeSCBLPTION op FEMAI.E, MaIE, AND Labva OF Wteomtia scotinomus : 



Female. — Proboscis long and slender, slightly broadened apieally; labellss 

 conically tapered, with fine outstanding setae ; vestiture black. Palpi small, one- 

 sixth as long as proboscis, clothed with black scales and rather long fine setse. 

 Clypeus rounded triangular, dark brown, slightly pruinose. Antennae moder- 

 ate, the joints subequal, rugose, coarsely pilose, black ; tori subspherical, with a 

 cup-shaped apical excavation, dark brown, slightly pruinose; hairs of whorls 

 sparse, moderate, black. Eyes black, separated by a narrow wedge. Occiput 

 broad, clothed with flat appressed scales, black with dull blue, green, and bronzy 

 reflection, a white patch at sides below ; two setse at the vertex. 



Prothoracic lobes slightly separated dorsally, brown, clothed with black scales 

 with a dull bronzy and blue reflection ; a row of black bristles on front margin. 

 Mesonotum black, clothed with elliptical, flat scales, black, with dull blue and 

 bronzy reflection; setae at roots of wings and on front margin, short, black. 

 Scutellum trilobate, the vestiture similar to and continuous with that of meso- 

 notum, each lobe with a tuft of brown bristles. Postnotum elliptical, prominent, 

 blackish, a tuft of small setae posteriorly. Pleurae brown, coxae luteous, clothed 

 with elliptical, silvery-white scales. 



Abdomen subcylindrical, compressed, blunt at tip, with coarse black terminal 

 setffi; dorsal vestiture bronzy black, with a metallic blue and green reflection; 

 venter yellowish silvery white, the colors separated on the sides in a nearly 

 straight line, the scales raised along the medioventral line. 



Wings moderate, hyaline ; petiole of second marginal cell half as long as its 

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

 less than its own length from anterior cross- vein; outstanding scales of veins 

 broadly linear, dark brown, with a blue reflection on costa, those on forks of 

 second vein and apices of third and fourth veins broader and much denser. 

 Halteres largely blackish. 



Legs rather slender, vestiture black with a blue and bronzy reflection, tro- 

 chanters and femora silvery white beneath ; tarsi and tibiae with pale metallic 

 luster beneath; mid tarsi without white (hind tarsi broken at third joint). 

 Claw formula, 0.0-0.0-0.0. 



Length : Body about 3.5 mm. ; wing 3 mm. 



