426 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io9 



Abdomen. — Dark brown, cerci yellowish. Spermatheca one, oval 

 with a short portion of the duct sclerotized, measuring 0.055 by 

 0.038 mm. 



Male genitalia: Ninth sternum with shallow caudomedian 

 excavation; ninth tergum short with small apicolateral processes. 

 Basistyle with foot-shaped ventral root; dististyle with distal portion 

 curved. Aedeagus with basal arch broadly rounded medially, ex- 

 tending to a half of total length of aedeagus, distal stem slender 

 with rounded apex. Parameres each with knobbed base, stem slightly 

 swollen and bent midway, without ventral lobe, the apex apparently 

 blunt-pointed without lateral barbs. 



Distribution: Venezuela; Ecuador; Panama. 



Panama records: 



BocAS DEL ToRO PROVINCE: Almirante. 

 CniRiQuf Province: Boquete, Volcdn. 



Discussion: This species is closely related to rangeli Ortiz and 

 Mirsa and more distantly to patulipalpis, new species (see discussion 

 under patulipalpis). The presence of four distinct pale spots in a 

 rhomboid in some specimens might cause confusion with propriipennis , 

 which has a third pale spot in cell Mi at the wing margin, or with 

 tetrathyris, new species, which has the apices of veins Mi, M2, and 

 M3+4 pale. Both latter species have two spermathecae. 



The leoni group 



This group consists of very small species with nearly bare wings 

 bearing extensive pale markings, wing broad at apex, the poststigmatic 

 pale spots nearly in line transversely and usually broadly fused, the 

 distal pale spot in cell R5 round and nearly filling apex of cell; one 

 pale spot each in distal parts of cell M2 and anal cell; antenna of 

 female with flagellar segments in two series, one from iii-x, the other 

 from xi-xv, in each of which the segments gradually increase in 

 length distally, segment xi thus shorter than x; distal sensory tufts 

 present on segments iii, vii or viii to x; four tibial spines, only one 

 spermatheca present; male genitalia with ventral root of basistyle 

 foot-shaped; paramere with simple basal knob, stem short, with or 

 without ventral lobe, tip simple or with very few fringing spines; 

 ninth tergum short and broad; aedeagus with or without subapical 

 points. 



Panama species: Two: Jieldi Wirth and Blanton and glabellus 

 Wirth and Blanton. Wirth and Blanton (1956) have recently treated 

 the species in this group which, in addition to the above species, 

 includes benarrochei Ortiz from Venezuela, leoni Barbosa from Ecuador, 

 and reevesi Wirth from California. 



