BITING MIDGES — WIRTH AND BLANTON 



303 



Figure 17. — Culicoides marshi Wirth and Blanton. Female: a, wing; h, thoracic pattern; 

 c, tibial comb; d, spermathecae; e, palpus. 



small, irregular, shallow, sensory pit. Mandible with 27 (26-28, 

 n=5) teeth. 



Thorax. — Mesonotum dark brown with a pruinose median area 

 golden brown, anterior and lateral margins blackish. Scutellum, 

 postscutellum and pleuron blackish brown. Legs dark brown, broad 

 bands at knees on all femora and tibiae and apex of hind tibia yellow- 

 ish; hind tibial comb with five (4-5, n=4) spines, the second from the 

 spur longest. 



Wing. — Pattern as figured, the distal pale spot in cell R5 may or 

 may not reach wing margin, distal pale spot in cell Mi always separate 

 from wing margin, the dark transverse bands of the pattern on distal 

 half of wing irregular but connected, the pale spots rarely extensive 

 enough to fuse in paler specimens. Macrotrichia fairly abundant on 

 distal half of wing; costa extending to 0.68 of distance to wing tip. 

 Halter yellowish. 



Abdomen. — Blackish, cerci yellowish. Spermathecae two, slightly 

 pyriform, subequal, each measuring 0.050 by 0.039 mm. 



Male: Unknown. 



Distribution: Panama. 



Panama records: 



BocAS DEL Toko Province: Almirante (type locality). 



