BITING MIDGES — WIRTH AND BLANTON 289 



Thorax. — Mesonotum and scutellum uniformly dull brown, without 

 pattern. Legs dark brown, trace of pale spots on fore and mid knees 

 and pale bands at base and apex of hind tibia; hind tibial comb with 

 five (n=17) spines. 



Wing pattern as figured, grayish brown with pattern of small, dull, 

 grayish white spots, crossvein dark on anterior end, vein R4+5 not 

 darkened past the dark area over base of second radial cell, cell Mi 

 with only one pale spot distal to the pale spot straddling vein M2. 

 Macrotrichia sparse but present in all marginal cells of wing; costa 

 extending to 0.66 (0.63-0.70, n=14) of distance to wing tip. Halter 

 dark. 



Abdomen. — Blackish, cerci paler. Spermathecae two, subpsherical 

 to pyriform, subequal, measuring 0.058 by 0.046 mm. 



Male genitalia: Ninth tergum with distinct caudomedian cleft 

 and small, not widely separated, apicolateral processes. Aedeagus 

 stout, with a pair of peculiar, subapical projections extending ventro- 

 laterad, the shape of the apex resembling a fleur-de-lis. Parameres 

 with main bodies fused on basal half, apices filiform and bare. 



Distribution: Trinidad; Bahama Islands, Haiti, Nicaragua, 

 Panama. 



Panama records: 



Canal Zone: Balboa (type locality of wokei Barbosa), Fort Kobbe, Galita 



Point, Loma Boracho, Mojinga Swamp. 

 BocAs DEL ToRO PROVINCE: Almirante. 

 CHiRiQuf Province: Alanje, Rio Tabasard. 

 CocLiS Province: Puerto Farall6n, Puerto Obaldla, Rio Hato. 

 Dari^n Province: Garachine, Jaque, Punta Patino. 

 Herrera Province: Puerto Chitre. 

 Los Santos Province: Las Tablas. 

 Panama Province: Arraijdn, Bayano, Chame, Pedregal, Puerto de Chorrera, 



Rio Las Lajas, Tocumen, Vique Cove. 

 Archipielago de las Perlas: Isla del Rev. 



Discussion: This species is known only from localities near coastal 

 salt marshes. It greatly resembles the Brazilian species, maruim 

 Lutz, with its unmarked mesonotum, wing pattern with dark cross- 

 vein, undarkened vein R4_,_5 and only one distal pale spot in cell Mj, 

 dark halter, and third palpal segment without sensory pit, but maruim 

 is a paler species with a more yellowish wing on which the macrotrichia 

 are very scanty, lacks the sensoria on antennal segments v, vii and ix, 

 the male aedeagus lacks the fleur-de-lis-like apex and the parameres 

 are fused only a short distance at bases and taper more gradually 

 to stouter, bare apices. 



Woke (1954) reported this species (as diminutus Barbosa) from 

 biting collections on man, and from emergence traps on the tidal 



