BITING MIDGES — WIRTH AND BLANTON 341 



wing margin; small, double pale spots present straddling base of vein 

 Ml and middle of vein M2; one pale spot in apex of cell Mi and one in 

 cell M2, well removed from wing margin; pale spot in cell M4 broadest 

 along posterior margin of vein M3+4; two pale spots in apex and one at 

 base of anal cell; pale spot at wing base and one straddling middle of 

 stem of mediocubitus; pale spots at wing margin at apices of veins 

 Ml, M2 and M3+4. Macrotrichia very dense, covering entire wing; 

 costa extending to 0.57 (0.54-0.59, n=16) of distance to wing tip. 

 Halter pale. 



Abdomen. — Brownish black. Spermathecae two, oval, unequal, 

 measuring 0.046 by 0.037 and 0.037 by 0.031 mm., the bases of the 

 ducts not sclerotized. 



Male genitalia: Ninth sternum with scarcely perceptible cau- 

 domedian excavation; ninth tergum tapered, with extremely long and 

 slender apicolateral processes. Basistyle with ventral and dorsal roots 

 slender and simple, the ventral roots pointed apically; dististyle short 

 and tapered to slender, hooked apex. Aedeagus with round basal arch 

 extending nearly to half of total length, basal arms stout and curved; 

 distal portion stout and tapered to rather broad, truncated apex. 

 Parameres small, each with stout lateral arms at base, stem swollen 

 bulbously at base, tapered very rapidly to very slender, simple tip 

 abruptly bent ventrolaterad. 



Distribution: Jamaica, Puerto Rico, Virgin Islands, Trinidad 

 (Port Delgada), Venezuela, Panama, Honduras (Lago Yojoa, Tela), 

 Nicaragua (Tela, Villa Somoza), Guatemala, Mexico, United States 

 (Kerrville, Texas). 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 



Canal Zone: Anc6n, Gamboa, Loma Boracho, Mojinga Swamp. 



CniRiQuf Province: Chiru. 



CocLi; Province: Penonome, Puerto Farall6n, Rio Hato, Tranquilla. 



Dari£n Province: Garachine, Punta Patino. 



Herrera Province: Puerta Chitre. 



Los Santos Province: Guarar4, La Palma, Pan de Azucar, San Jose. 



Panama Province: Camar6n, Chepo, El Coco, La Jolla, Rio Las Lajas, Isla 



Toboga, Tocumen. 

 Veraguas Province: Rio Santa Maria, San Francisco. 



Discussion: This species is widel}^ distributed around the Caribbean 

 from Texas to Venezuela and Trinidad. It was long called a variety 

 of loughnani Edwards from Jamaica (from whence both species were 

 described at the same time) and Florida (Foote and Pratt, 1954), 

 but no loughnani specimens, with their extensive pale wing markings 

 and long male apicolateral processes and parameres, have been seen 

 from the Central American jamaicensis localities, and we believe 

 there are two distinct species. Culicoides bakeri Vargas from Mexico 



