WYEOMYIA CONCHITA 63 



bronzy brown; pleurae and coxfe silvery; abdomen black above, silvery white below. 

 Femora and tibiae blackish, pale beneath; second to fifth joints of tarsi of hind feet 

 whitish at base from side view. 



16 specimens, Tarpon Bay, Bahama Islands (T. H. Coffin). 



Type.Csit. No. 9990, U. S. Nat. Mus. 



Description of Femai^e of Wyeomyia bahama (Male and Larva Unknown) : 



Female. Proboscis rather short, enlarged apically, labellfe small, rounded, 

 with fine outstanding setae; vestiture black with bronzy reflection. Palpi short, 

 flattened, one-sixth as long as the proboscis, bronzy black. Antenna moderate, 

 the joints slender, subequal, rugose, pilose, black; tori subspherical, with a cup- 

 shaped apical excavation, yellowish, with a silvery-white pruinosity; hairs of 

 whorls moderate, rather sparse, black. Clypeus rounded triangular, convex, 

 silvery pruinose. Eyes separated at vertex by a rather broad wedge, bluish 

 black. Occiput clothed with flat, brown scales with a slight metallic blue and 

 bronzy reflection, a white patch on lower parts of sides and one at the vertex 

 between the eyes, a row of bristles along margins of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with flat silvery-white 

 scales, a row of setse along the anterior margin. Mesonotum clothed with ellip- 

 tical, flat, brown scales with submetallic bronzy reflection ; the scales on anterior 

 lateral angles whitish; a group of setae on anterior margin and at roots of 

 wings. Scutellum trilobate, with the vestiture similar to and continuous with 

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

 elliptical, prominent, with a low, broad median carina, brown, a group of small 

 setae near posterior margin. Pleurae and cox^e luteous, clothed with elliptical, 

 flat, silvery-white scales and a few long, black setae. 



Abdomen subcylindrical, truncate at tip, with long, dark-brown terminal 

 setae ; dorsal vestiture black, with a slight metallic reflection ; last segment sil- 

 very, with coppery luster in the middle ; venter silvery white, the colors separated 

 at the sides in a straight line, scales along ventral line somewhat raised. 



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

 as its cell; that of second posterior cell shorter than its cell; basal cross-vein 

 distant nearly its own length from anterior cross-vein ; outstanding scales of 

 veins long, ligulate, brown, with bronzy and blue reflection on costa, denser at 

 tip of wing. Halteres whitish, with brownish knobs. 



Legs rather long and slender, femora brown, with a bronzy and blue reflec- 

 tion, pale beneath; hind legs with tibiae and basal half of first tarsal joint 

 whitish beneath, second, third, fourth, and fifth joints marked with white at 

 base beneath ; mid tarsi with apex of second and all of last three joints silvery- 

 white beneath. Claw formula, 0.0-0.0-0.0. 



Length : Body about 2.5 mm ; wing 2.5 mm. 



Life history and habits unknown. 



Bahama Islands, British West Indies. 



Tarpum Bay, Eleuthera, and Long Island, July 7, 1903 (T. H. Coffin) ; ISTew 

 Providence Island, February 28, 1915 (H. G. Dyar). 



WYEOMYIA CONCHITA Dyar & Knab. 



Wyeomyia conchita Dyar & Knab, Smiths. Misc. Colls., quart, iss., lii, 264, 1909. 

 Wieomyia conchita Pazos, San. y Ben., ii. 50, 676, 1909. 



Original Description of Wyeomyia conchita: 



Proboscis moderate, distinctly swollen towards the apex. Occiput dark-scaled, with 

 bronzy and iridescent luster, a patch of silver scales on the vertex. Prothoracic lobes 

 entirely silver-scaled. Abdomen dark-scaled above with faint bronzy and blue 

 luster, the tip silver-scaled, venter white-scaled, the colors separated on the sides 

 in a straight line. Legs dark-scaled, paler with brassy luster beneath, the mid 

 tarsi white beneath on the tip of the second and the last three joints, hind tarsi 

 broadly white-marked at the bases of all the joints beneath. Wing-scales narrow. 



Length, 2.5 mm. 



Fourteen specimens, San Antonio de los Baiios, Cuba (J. H. Pazos). 



Type no. 12180, U. S. N. M. 



