334 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



over anal vein near base of cell; pale spot present in cell M2 in front of 

 mediocubital fork, none behind medial fork. Macrotrichia numerous 

 and long, extending to base of wing in anal cell and cell M2; costa 

 extending to 0.59 (n = 3) of distance to wing tip. Halter pale. 



Abdomen. — Dark brown. Spermathecae two, subequal, ovoid, 

 each measuring 0.036 by 0.031 mm., the bases of the ducts not 

 sclerotized. 



Male genitalia: Ninth sternum with very broad, very shallow, 

 caudomedian excavation; ninth tergum short and broad with very 

 slight caudomedian notch and very large, triangular apicolateral 

 processes. Basistyle with dorsal root long and slender, ventral root 

 about half as long, pointed; dististyle with slender, hooked tip. Aede- 

 agus wedge-shaped with nearly straight sides and broad, truncated 

 tip; basal arch extending to about a third of total length of aedeagus, 

 formed by a very poorly sclerotized mesal membrane, the basal arms 

 rather stout and well sclerotized, nearly straight. Parameres each with 

 laterally directed basal knob, stem short and swollen at base, tapered 

 to simple, slender, distally bent tip. 



Distribution: Panama. 



Specimens examined: Holotype female (USNM 63164), Almirante, 

 Bocas del Toro Province, October-December 1952, F. S. Blanton, light 

 trap. Allotype male, Cerro Campana, Panama Province, Sept. 19, 

 1952. Paratypes, 22 females: 13 females, Almirante, October 1952 to 

 March 1953; 6 females, Cerro Campana, July 3, 1951, September 1952; 

 2 females, Mojinga Swamp, Canal Zone, December 1951; 1 female, 

 El Valle, Code Province, Jan. 6, 1954. 



Discussion: The female of this species is similar to that of daedalus 

 Macfie and phaeonotus, new species; for characters of separation see the 

 discussion under phaeonotus. The male genitalia of pilosus are nearly 

 identical with those of panamensis Barbosa, but in panamensis the 

 basal knob and the basal swelling of the stem of the parameres are not 

 so well developed, the aedeagal arch is usually higher and broader and 

 the apicolateral processes are somewhat longer and more diverging. 



29. Culicoides panamensis Barbosa 



Figure 32 



Culicoides panamensis Barbosa, 1947, Anais Soc. BioL Pernambuco, vol. 7, p. 22 

 (male, female; Barro Colorado Island, Canal Zone; fig. palpus, male geni- 

 talia). — Wirth, 1955, Proc. Ent. Soc. Washington, vol. 57, p. 114 (Guatemala; 

 descriptive notes; fig. palpus, male genitalia; synonym, alambiculorum 

 Macfie). 



Culicoides alambiculorum Macfie, 1948, Ann. Trop. Med. Parasit., vol. 42, p. 81 

 (female; Chiapas, Mexico; fig. wing). 



Female: Length of wing 0.87 (0.76-1.06, n=10) mm. 



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



