376 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



wing margin; cell M4 with a round pale spot in center; anal cell with 

 two round pale spots in distal portion and an irregular pale area at 

 base; cell M2 with a double pale spot between medial and medio- 

 cubital forks, with a pale line connecting it to the subapical pale spot 

 in cell and to another pale spot in basal third of cell. Macrotrichia 

 sparse on distal third of wing, none in anal cell; costa extending to 

 0.66 (0.63-0.68, n = 7) of distance to wing tip. Halter with base of 

 knob infuscated. 



Abdomen. — Blackish. Spermathecae two, pyriform, subequal, each 

 measuring 0.050 by 0.035 mm., the bases of the ducts not sclerotized. 



Male genitalia: Ninth sternum with very small caudomedian 

 excavation : ninth tergum tapering, the apicolateral processes long and 

 triangular. Basistyle with ventral root foot-shaped, the posterior 

 heel poorly developed, dorsal root slender; dististyle slender and 

 curved to pointed tip. Aedeagus with basal arch extending to half of 

 total length, the basal arms stout and nearly straight; distal portion 

 tapering to a slender, striated tip with sclerotized subapical points well 

 developed. Parameres each with large basal knob, stem moderately 

 stout and slightly curved on basal and mid portions, with a large, 

 bladelike, ventral lobe; distal portion long and slender with a lateral 

 fringe of fine spines. 



Distribution: Panama; Honduras (Lancetilla) ; Trinidad. 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 



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

 Mojinga Swamp. 



Discussion: Ortiz described this species from a male specimen 

 collected by Fairchild at Cerro Sefa, Panama, 2,300 feet elevation, 

 and sent to John Lane at the University of Sao Paulo, Brazil, where 

 the type is now deposited. 



The reticulatus group 



This group consists mostly of medium-sized species, the wings 

 usually with extensive pale markings, either veins M, and M2 pale 

 margined or pale spots at ends of veins (except in macrostigma) ; many 

 species with a basic pattern of four pale spots in cell R5 with the 

 proximal three forming a ring around the second radial cell leaving a 

 small dark spot just behind this cell; female antenna with sensoria 

 present on segments iii, and vi, vii or viii to x; four tibial spines; 

 two spermathecae; male genitalia with ventral root foot-shaped (ex- 

 cept in macrostigma) ; paramere with simple basal knob, the stem very 

 long and slender without ventral lobe, the apex simple or fringed; 

 aedeagus with arch high and pointed, subapical points usually present. 



