272 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



Nelidina DeLong, new status 



Figures 75-80, 110-112 



Coelidia7ia subgenus Nelidina DeLong 1953, p. 129. Type of subgenus Coelidiana 

 defila DeLong by original designation. 



Description.- — With carina separating face and crown. Crown in 

 dorsal view wider than long, sharply rounded apically, and produced 

 beyond eyes. Ocelli on anterior margin of crown. Head including 

 eyes narrower than pronotum. Length of antennae at least half as 

 long as body. Posterior margin of pronotmn approxmiately straight 

 across or slightly indented. Venation of fore wings most distinct 

 apically. 



Ground color various shades of yellow without strongly contrasting 

 markings. 



Male genitalia: Valve lacking. Male plates fused basally and 

 with long apical macrosetae. Pygofer in lateral view with a dorsal 

 process or terminal hook. Anal tube simple. Connective very 

 broadly Y-shaped with stalk bifurcate to receive aedeagus. Stylar 

 apex weakly hooked in lateral view. Aedeagus slender with paired 

 apical processes. 



Discussion. — Nelidina includes two species, A^. defila (DeLong) 

 (figs. 75-80) and A^. taeniola, new species, from South America. 

 The type of the genus, A^. defila, is known only from Peru, and A^. 

 taeniola is recorded only from Colombia. 



Key to Species of Nelidina 



MALES ONLY 



Length 7 mm.; aedeagal processes uniformly slender and not twisted (figs. 79, 80). 



N. defila (DeLong) 

 Length 4.5 mm.; aedeagal processes ribbon-like and twisted (figs. 111,112), 



N. taeniola, new species 



Nelidina taeniola, new species 



Figures 110-112 



Length. — Male 4.5 mm. 



Coloration. — Uniformly yellowish or yellowish-green without 

 distinct markings. Exceedingly faint dark longitudinal striping on 

 forewings. 



Male genitalia: Posterior margin of pygofer beset with numerous 

 fine setae and with small sharp hook or tooth ventrally (fig. 110). 

 Rest of capsule like A^. defila. Aedeagus transverse with long, twisted, 

 ribbon-Uke, pahed apical processes (figs. Ill, 112). 



HoLOTYPE. — Male, Chic6, Colombia, elevation 2,900 meters, 

 January 2, 1959, R. F. Ruppel. USNM type no. 34882. Paratype, 

 male with same data. 



