BITING MIDGES — WIRTH AND BLANTON 351 



branches of media and cubitus dark, two pale spots in cell Mj beyond 

 the pale spot in front of mediocubital fork, the proximal spot in cell 

 Ml completely filling the space between veins Mi and M2 but usually 

 not appearing to straddle these veins, distal pale spot in anal cell 

 consisting of two broadly fused spots. Macrotrichia sparse in apices 

 of cells R5, Ml and M2; costa extending to 0.62 of distance to wing tip. 

 Halter pale. 



Abdomen. — Dull brownish black. Spermathecae two, pyriform, 

 subequal, measuring 0.048 by 0.032 mm. and 0.043 by 0.029 mm. 



Male genitalia: Ninth sternum with shallow caudomedial exca- 

 vation, the posterior membrane spiculate; ninth tergum short and 

 strongly tapered, with well developed, triangular, apicolateral proc- 

 esses. Basistyle with dorsal and ventral roots relatively short, the 

 ventral root foot-shaped with long heel and sharp-pointed toe; 

 dististyle with slender, bent apex. Aedeagus with broad, rounded 

 basal arch, the basal arms slender and curved; distal stem short 

 and rounded apically. Parameres each with basal knob, stem ab- 

 ruptly bent near base, slender and sinuate distad, without ventral 

 lobe, apex sharp with two or three lateral barbs. 



Distribution: Panama. 



Panama records: 



BocAs DEL ToRO PROVINCE: Alinirante. 



Canal Zone: Fort Clayton, Fort Davis, Fort San Lorenzo,Huile Sia Clara(?), 



Loma Boracho, Madden Dam, Mojinga Swamp (type locality). 

 Chiriqu! Province: Rio Tabasard,, Tortugas. 

 CocL^ Province: Espifio. 

 Col6n Province: Pifia. 

 Dari^n Province: Jaque. 

 Panama Province: Camar6n, Cerro Campana, Chepo, El Coco, La JoUa. 



Pacora, Pedregal, Isla Taboga, Tocumen, Vique Cove. 

 Veraguas Province: Rio Santa Maria, Sapotilla. 



Discussion: Typical specimens of galindoi from Mojinga Swamp, 

 Fort Sherman, and Loma Boracho have the pale distal spot in cell R5 

 rounded distally, leaving a small dark area in apex of cell as figured 

 in our 1953 paper. More common in Panama, however, is the form 

 having the apex of cell R5 entirely pale. Structurally, typical galindoi 

 has the costal ratio longer (0.55), the antennal ratio greater (1.08), 

 resembling limai, and the spermathecae more nearly equal in size. 

 In the atypical galindoi (as well as in tenuilobus, new species) the 

 antennal segments gradually increase in length to the seventh seg- 

 ment, then segment eight is shorter and the segments increase in 

 length again, while in the typical specimens the segments gradually 

 increase in length up to the tenth segment. 



Culicoides limai is very closely related, having a wing pattern 

 like the atypical specimens discussed in the paragraph above, but 



