188 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



the cornuti and the forewing markings are independent from each 

 other. 



Proeulia aethalea, new species 



Plate 4 



Antenna fuscous. Labial palpus pale brownish gray, speckled with 

 dark fuscous. Head fuscous touched with gray. Thorax grayish 

 brown. Abdomen brownish gray with a dark brown transverse line 

 on caudal edge of eighth abdominal tergite. Legs ocherous. Fore- 

 wing fuscous with indistinct, somewhat olive-brownish or gray- 

 brownish markings apparently consisting of two diffuse, very broad 

 transverse bands inclined basad; cilia dark brownish gray (as seen 

 under magnification, with scales white checked). Underside of 

 forewing grayish ocherous. Length of forewing 11 mm. Hindwing 

 yellowish white, mottled with pale olive brown; an olive-brownish 

 hair brush at base of veins A2 and A3; cilia whitish. 



Male genitalia : Uncus rather long ; socii dilated externally. Fultura 

 superior dilated laterally; fultura inferior triangular, moderately high. 

 Valva elongate with apex directed upward and external margin 

 rather vertical, in lower portion; sacculus rather broad, moderately 

 long, with tip slightly tapering and slightly protruding beyond lower 

 margin of valva. Aedeagus thickened, with a long and broad lower 

 distal portion and a sclerotized margin around orificium; cornuti 

 arranged in two groups: upper of eleven long cornuti, and lower of 

 three cornuti about half as long as upper ones. 



Female genitalia: Lamella antevaginalis shaped as a semicircular 

 band dilated toward antrum; lamella postvaginalis weakly sclero- 

 tized, forming dorsal surface of funnel of ostium bursae. Antrum 

 large, membranous. Corpus bursae elongate, sclerotized, covered 

 with stronger sclerotized, longitudinal lines and, in caudal portion, 

 with fine scobination; cestum in form of a long, digitate projection 

 arising from a large basal disc located cephalad from cervix bursae. 

 Weak sclerotization around ostium oviductus. 



Types: Holotype, male (genitalia on slide, 17-Obr., 1962), La Obra, 

 Santiago, Chile, October 1902 (L. E. Pena), USNM (type no. 66830). 

 Allotype, female (genitalia on slide 6699), Valparaiso, Chile, Sept. 

 30-Oct. 8, 1883 (Walker, 3080), British Museum (Natural History). 



Remarks: This species differs from the remaining known members 

 of the genus in having very indistinct and poorly defined markings on 

 the forewing. The shape of the aedeagus, the set of the cornuti, 

 and the characters of the female genitalia are unique in the genus 

 Proeulia. The name of this species is derived from the Greek 

 ai9a\eos, meaning "smoky." 



