WYEOMYIA ANTOINETTA 83 



half with a minute filament next the suture and a long spine subapically, which 

 exceeds the apical hairs. Palpus less than half as long as maxilla, with minute 

 apical digits. Thorax rounded, moderate; hairs rather abundant. Abdomen 

 slender; first two lateral tufts multiple, third to fifth double and long, sixth 

 single. Air-tube moderate, tapered on outer half, four times as long as wide ; 

 hairs single, fine, scattered on both surfaces ; texture smooth ; no pecten. Lateral 

 comb of eighth segment of many single spines in a long, straight band, nowhere 

 doubled ; single spine elliptical, conically tapered at tip, smooth. Anal segment 

 about as long as wide, with a dorsal plate reaching well down the sides ; dorsal 

 tuft of two long hairs on each side ; a single long lateral hair ; subventral tuft 

 large, stellate; no ventral brush. Anal gills moderate, equal. 



The larvse live in the water between the leaves of Bromeliaeese and in similar 

 locations. Mr. Busck found them in water in the leaf -sheaths of a young palm 

 and in another case in an epiphytic bromeliad. Dr. Pazos collected the larvae 

 from a species of Tillandsia (Bromeliaceae) . 



Santo Domingo, Jamaica, and Cuba. 



'Nea.T Santo Domingo City, Santo Domingo, larvse in leaf -sheaths of a young 

 palm, August 17, 1905 (A. Busck) ; San Francisco Mountains, Santo Domingo, 

 larvEB in a bromeliad growing on a tree, August 39, 1905 (A. Busck) ; Kingston, 

 Jamaica (M. Grabham) ; Jamaica, February 17, 1904 (M. Grabham) ; banks of 

 the river Ariguanabo, San Antonio de los Bancs, Cuba, larvae in leaves of a 

 Tillandsia sp. (J. H. Pazos). 



The name mitchellii was founded on a single adult from Jamaica ; the name 

 ochrura was given to larvse from Santo Domingo, Trinidad, and Dominica. 

 We have restricted the name ochrura to the specimens from Santo Domingo, 

 the other larvse, although similar, representing different species. Dyar and 

 Knab referred to ochrura specimens from Salvador, Guatemala, Mexico, and 

 southern Florida, and later placed the name as a synonym of Wyeomyia 

 pertinans; but further study has revealed specific differences between all these 

 forms. Wyeomyia mitchellii extends throughout the Greater Antilles, but does 

 not reach the mainland, not even southern Florida. It is less localized than 

 most other species of this genus, especially as compared with the species with 

 silvery prothoracic lobes, which occupy the same region, and are not only differ- 

 ent on every island, but represented by several species in Cuba. 



WYEOMYIA ANTOINETTA Dyar & Knab. 



Wyeomyia ochrura Dyar & Knab (in part), Proc. Biol. Soc. Wash., xlx, 141, 1906. 

 Wyeomyia antoinetta Dyar & Knab, Smiths. Misc. Colls., quart, iss.. Hi, 263, 1909. 

 Wieomyia antoinetta Pazos, San. y Ben., li, 51, 679, 1909. 



Original Description of Wyeomyia antoinetta: 



Proboscis moderate, distinctly swollen at the apex. Occiput dark-scaled, obscurely 

 iridescent, the margin of the eyes not white-scaled, a silvery spot on the occiput 

 and on sides below. Prothoracic lobes dark-scaled, with a violaceous luster, the 

 apex and base silvery-scaled. Abdomen dark-scaled above with obscure bronzy and 

 blue luster, white-scaled beneath, the colors separated on the sides in a straight 

 line. Legs dark-scaled with a paler bronzy luster beneath, mid tarsi with the 

 outer half of the second and all of the last three joints silver-white-scaled out- 

 wardly, hind tarsi unmarked. Wing-scales narrow. Length, 3 mm. 



One specimen, Estero, Florida (J. B. Van Duzee), bred from larvse in bromelia- 

 ceous plants. 



Type no. 12179, U. S. N. M. 



Description of Male and Laeva of Wyeomyia antoinetta (Female Unknown) : 



Male. — Proboscis moderate, swollen apically, labellse small, rounded, with 

 fine outstanding setae; vestiture bronzy black, a paler shade below, silvery 

 basally. Palpi short, flattened, one-seventh as long as proboscis, bronzy black. 



