BITING MIDGES — WIRTH AND BLANTON 381 



style slender, with bent, pointed apex. Aedeagus with pointed basal 

 arch extending to half of total length, the basal arms slender and 

 curved, distal portion tapered to very slender distal point. Para- 

 meres each with large basal knob, stem gently curving and moderately 

 stout on basal portion, midportion slender and straight, ventral lobe 

 absent, abruptly curved to relatively stout, long simple tip. 



Distribution: Panama. 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 



Canal Zone: Fort Davis, Fort San Lorenzo, Fort Sherman, Loma Boracho, 



Mojinga Swamp (type locality). 

 Los Santos Province: Pan de Azucar. 

 Panama Province: Arraijdn. 



Discussion: Our original description of the male genitalia of 

 mojingaensis was based on a misidentified specimen of paucienfuscatus. 

 We have seen correctly associated males from most of the above 

 localities, and on these the present description of the male is based. 



This species is related to paucienfuscatus Barbosa, bricenoi Ortiz, 

 and azureus, new species, all of which have the distal pale spot in 

 cell Ml nearly attaining wing margin. Paucienfuscatus and hricetioi 

 have the pale wing spots much more extensive with the pale margins 

 of veins Mi and M2 connected extensively to the discal pale wing 

 spots. In azureus vein M2 is pale only on a small apical spot at the 

 wing margin and the parameres are slenderer, while in bricenoi the 

 parameres have remarkable spatulate tips. Bricenoi is known only 

 from Venezuela and Ecuador. 



49. Culicoides paucienfuscatus Barbosa 



Figure 52 



Culicoides paucienfuscatus Barbosa, 1947, Anais Soc. Biol. Pernambuco, vol. 7, 



p. 23 (female; Brazil, Panama; fig. wing, palpus). 

 Culicoides mojingaensis Wirth and Blanton, 1953, Journ. Parasit., vol. 39, p. 232 



(in part, male allotype was misdetermined). 



Female: Length of wing 1.02 (0.84-1.16, n=13) mm. 



Head. — Eyes narrowly separated, bare. Antenna with flagellar 

 segments in proportion of 16: 14 : 14 : 14: 13 : 14 : 13 : 13:21 :21 :23 :23 :36, 

 antennal ratio 1.18 (1.02-1.34, n = 8); distal sensory tufts present on 

 segments iii, vii-x, rarely absent on vii. Palpal segments in propor- 

 tion of 11:26:28:9:12, third segment moderatel}'^ swollen, 2.21 

 (1.80-2.73, n = 13) times as long as greatest breadth, with a moder- 

 ately large, deep, sensory pit. Mandible with 12 (11-15, n = 12) teeth. 



Thorax. — Mesonotum pruinose blackish brown on anterior and 

 lateral margins, midportion grayish brown pruinose, with pattern of 

 elongate, longitudinal oval patches delimited bj'^ three narrow dark 



475684 0-59-10 



