148 MOSQUITOES OF NORTH AMERICA 



occipital foramen wide ; antennae rather long, slender, with a double hair at outer 

 fourth; upper dorsal head-hairs multiple, the ones above the mouth single, ante- 

 antennal tuft multiple. Lateral comb of eighth segment of about twenty spines 

 in a long single row reaching well towards the ventral line, followed by a four- 

 haired tuft. Air-tube long, slightly fusiform towards base, gradually and 

 slightly tapering outwardly, about seven times as long as wide, clothed with 

 numerous evenly spaced two-haired short tufts in three series; apical hooks 

 moderate. Anal segment as long as wide, with a large dorsal plate; dorsal tuft 

 of two long hairs on each side ; lateral hair single, long, attached to the angle of 

 the plate; subventral tufts moderate, five-haired. Anal gUls somewhat longer 

 than the segment, broad, rounded at tip, subequal. 



The larvse live in the water between the leaves of epiphjrtic Bromeliaceae. 



Panama. 



Fort San Felipe, Porto Bello, January 4, 1908, larvse in a bromeliad (A. H. 

 Jennings) . 



WYEOMYIA LEUCOPISTHEPUS Dyar & Knab. 



Wyeomyia leucopisthepus Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 212, 1907. 

 Wyeomyia leucopisthepus Busck, Smiths. Misc. Colls., quart, iss.. Ill, 73, 1908. 

 Wyeomyia leucopisthepus Theobald, Mon. Cullc, v, 625, 1910. 



Obiginal Desckiption of Wyeomyia i.etjcopisthepus : 



Proboscis rather long and slender, swollen at the apex; palpl very short, black 

 scaled; occiput dark scaled, with blue-green luster, the eyes evenly white margined, 

 a small white spot on the vertex; prothoracic lobes large and prominent, well sepa- 

 rated, clothed with dark scales, the apices and bases silvery scaled; mesonotum 

 brown scaled, in front with a few whitish scales; metanotum blackish with a group 

 of setae towards the apex; abdomen black scaled above, white scaled beneath, the 

 colors separated in a straight line on the sides; legs dark with bronzy luster, brassy 

 beneath, on the hind legs the fourth and fifth tarsal joints are silvery-white scaled 

 on the inner side except at their apices which are dark scaled; scales of the wing- 

 veins long and narrow. Length, 2.5 mm. 



One specimen, Tabernilla, Canal Zone, Panama (August Busck, collector), bred 

 from larvae in water In the leaves of Bromelias. 



Type. — ^No. 10861, U. S. National Museum. 



Descbiption of Male of Wyeomyia leucopisthepus (Female and Labva Unknown) : 

 Male. — Proboscis long, slightly expanded apically, labellae small, rounded, 

 with fine outstanding setae ; vestiture bluish black above, beneath bronzy, silvery 

 at base. Palpi short, flattened, one-eighth as long as proboscis, bronzy black. 

 Antennae moderate, the joints slender, subequal, rugose, coarsely pilose, black ; 

 the joints with small secondary subapical whorls ; tori subspherical, with a 

 cup-shaped apical excavation, luteous brown, with a slight pruinosity ; hairs of 

 whorls long, abundant, black. Clypeus rounded, convex, brown pruinose. Eyes 

 separated at the vertex by a narrow wedge, bluish black. Occiput clothed with 

 fiat brown scales with a metallic reflection; a small silvery spot at the vertex; a 

 narrow border along the eyes, not attaining the vertex, widening into a patch 

 below ; two long setse at the vertex and smaller ones along margins of eyes. 



Prothoracic lobes elliptical, well separated, clothed with flat scales, "brown 

 above, white at base ; a row of setae along anterior margin. Mesonotum clothed 

 with elliptical, flat brown scales with a submetallic bluish and bronzy reflec- 

 tion ; scales below lateral angles grayish silvery, setae over roots of wings dark 

 brown. Seutellum trilobate, with vestiture similar to and continuous with that 

 of mesonotum, each lobe with a small tuft of black bristles. Postnotum ellip- 

 tical, prominent, with a broad, low median carina, blackish brown, a group of 

 small setae near posterior margin. Pleurae dark brown, coxae luteous, clothed 

 with elliptical, flat silvery-white scales. 



Abdomen subcylindrical, compressed, expanded apically and with a series of 

 coarse, dark-brown terminal sets ; dorsal vestiture black with a slight metallic 



