WYEOMYIA MAT^A 93 



tarsi with basal three-fourths of fourth and fifth joints broadly white beneath. 

 Claw formula, 0.0-0.0-0.0. 



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



Life history and habits unknown. 



Caldera Island, Caribbean coast of Panama. 



Porto Bello Bay, adults captured (A. H. Jennings). 



WYEOMYIA MAT.S:A Dyar & Knab. 



Wyeomyia matcea Dyar & Knab, Proc. U. S. Nat. Mus., xxxv, 70, 1908. 

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



Original Description of Wyeomyia matcea: 



Female. Proboscis long and slender, swollen at the apex, dark-scaled, with a line 

 of whitish scales on the under surface; palpi dark-scaled; occiput dark-scaled, with 

 faint bluish and bronzy reflections, the margin of the eyes dull white-scaled, in- 

 terrupted on each side of the vertex; prothoracic lobes dark blue and violaceous, 

 with strong iridescence; mesonotum dark bronzy brown-scaled; abdomen above 

 blackish brown-scaled, with obscure bronzy and blue reflections, beneath coarsely 

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

 with bronzy and blue reflection, the under surfaces of the femora and tibiae pale 

 brassy-scaled; mid-legs with the apical half of the second joint and all of the third, 

 fourth, and fifth silvery white-marked on one side; front and hind tarsi unmarked. 

 Length, 3.5 mm. 



Two specimens, Sonsonate, Salvador, August 19, 1905, and Santa Lucrecia, State 

 of Vera Cruz, Mexico, June 21, 1905. (F. Knab.) 



Type. Cat. No. 11994, U. S. N. M. 



Description of Female and Male of Wyeomyia mat^a (Larva Unknown) : 



Female. Proboscis rather slender, the tip somewhat expanded, the labellaG 

 small, rounded, with fine outstanding setas ; vestiture bluish black, pale bronzy 

 beneath. Palpi short, flattened, one-sixth as long as proboscis, bronzy black. 

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

 tori subspherical, with a cup-shaped apical excavation, brown, with a whitish 

 pruinosity; hairs of the whorls long, rather sparse, black. Clypeus rounded 

 truncate in front, convex, brown pruinose. Eyes separated at vertex by a narrow 

 wedge, bluish black. Occiput clothed with flat brown scales with a bronzy and 

 blue reflection, a small metallic spot at the vertex and a large white spot at lower 

 part of sides ; a narrow white margin running up along the sides of the eyes, not 

 attaining the vertex ; two setae at vertex and smaller ones along margins of the 

 eyes. 



Prothoracic lobes elliptical, distinctly separated, clothed with flat blackish 

 scales with violet-blue luster, a row of setae on anterior margin. Mesonotum 

 clothed with elliptical, flat dark-brown scales Avith a bronzy and blue reflection ; 

 scales below the lateral angles silvery gray; bristles over roots of wings dark 

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

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

 elliptical, prominent, dark brown, a group of small setae near posterior margin. 

 Pleurae brown, coxse luteous, clothed with elliptical, flat silvery-white scales. 



Abdomen subcylindrical, compressed, truncate apically, and with many long, 

 dark-brown terminal setae; dorsal vestiture black with a slight metallic reflec- 

 tion ; venter yellowish white, 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 shorter than its cell ; basal cross-vein inci- 

 dent with anterior cross-vein ; scales of veins long, narrowly ligulate, black, with 

 a slight bronzy reflection on costa, broader and denser on forks of second and 

 fourth veins and outer half of third, Halteres whitish with black knobs. 



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

 beneath ; tibiae and tarsi with a strong bronzy luster beneath ; middle tarsi with 



