112 



tnsriTED STATES NATIONAL MUSEUM BULLETIN 2 07 



stalk of 8-9 ; male without costal fold. Hind wing with 

 veiQ 2 from before lower outer angle of cell; 3 from 4 well 

 beyond 2, in some specimens (fig. 19) connected with 

 discoceUular by a short spur before its separation from 

 4; 4 and 5 anastomosed for less than half their lengths; 

 7 and 8 anastomosed for a short distance beyond cell; 

 cell less than half the length of wing; discoceUular vein 

 cin-ved and considerably extended at lower angle. 

 Eighth abdominal segment of male with compound 

 ventral scale tufts. 



Male genitalia as in Oatastia except transtiUa com- 

 pletely absent, a fine brush of long hairs arising from 

 inner surface of harpe along lower edge of basal half of 

 the sclerotized costa (as in Meroptera). 



Female genitalia with bursa copulatrix finely and 

 densely spiued; ductus bursae flattened, gramilated, 

 inbent at middle; not longer than bursa, its lateral 

 margins strongly and broadly sclerotized towards 

 genital opening, opening deeply concave; ductus semi- 

 nalis from a thickened (but not sclerotized) lobe of 

 bursa, near junction of bursa and ductus bursae. 



This and the five genera following form a group 

 closely allied to Salebiia Hiibner. All have grooved 

 and erect or oblique male labial palpi, the male maxil- 

 lary palpus in the form of an aigrette, a scale tuft in 

 sinus on base of shaft of male antenna, no transtilla or 

 only the greatly reduced rudiments of one, and (except 

 for Oreana and Quasisalehria) a single, long, strong 

 cornutus on penis. Immyrla is distinguished from all 

 nearly related genera by the raised scale ridge on fore- 

 wing. Ortholepis also has this character, but the costal 

 sclerotization of its harpe is much weaker, and it has a 

 complete transtilla. 



230. ImmyTla nigrovittella D^ar 



FiGTTEBS 19, 318, 798 



Immyrla nigrovittella Dyar, Journ. New York Ent. Soc, vol. 14, 

 p. 109, 1906.— Forbes, Cornell Mem. 68, p. 627, 192.3.— 

 McDunnough, Check list, No. 6187, 1939. 



Forewing dark gray, the basal area darker than re- 

 mainder of wing; median and outer areas a paler 

 brownish gi'ay with a faintly darker shade preceding 

 the subterminal line, a very sparse dusting of whitish 

 scales on the paler areas; antemedial line faiut, narrow, 

 oblique and more or less curved, dull white, followed 

 by a narrow, blackish brown border and preceded by a 

 conspicuous black ridge of raised scales extending from 

 inner margin to top of cell; subterminal line obscure, 

 sinuate, pale, without dark bordering lines ; discal spots 

 faint, blackish and confluent, forming a curved line 

 along discoceUular vein. Hind wing pale fuscous, the 

 veins very slightly darkened. Both fore and hind 

 wings have a rather slick, glossy finish. Alar expanse, 

 20-21 mm. 



Genitalia: As given for the genus. 



Type locality: Pittsburgh, Pa. (type in USNM). 



Food plant: Hickory. 



Distribtitign: Pennsylvania, New Brighton (June), 

 Pittsburgh (May); New York, lUion (June). 



The only species so far discovered referable to the 

 genus. The food plant record is from a female without 

 a locality label in the National Collection, reared from a 

 pupa. The label reads simply "102, Hickory, pupated 

 VII — 17." The specimen also bears an identification 

 label in Dyar's handwriting. 



60. Genus Oreana Hulst 



Oreana Hulst, Ent. Amer., vol. 4, p. 115, 1888. (Type of genus: 

 Dioryctria unicolorella Hulst.) 



Characters as in Immyrla except: Forewing smooth; 

 veins 4 and 5 connate (rarely very shortly stalked) ; vein 

 10 from the stalk of 8-9 a short distance from ceU. 

 Hind wing with 4 and 5 stalked for more than half their 

 lengths. 



Male genitalia with numerous strong slender cornuti 

 on penis. 



Female genitalia with bursa copulatrix strongly 

 sclerotized in the lobed area giving off the ductus semi- 

 nalis; sclerotized lateral margins of ductus bursae not 

 produced at genital opening and ventral margin of the 

 opening not appreciably concave (these differences in 

 the ductus bursae probably only of specific significance). 



Oreana sank into the synonymy of Meroptera when 

 Ragonot (1889) referred its type species (unicolorella) to 

 the latter genus, but it must be restored, as unicolorella 

 is not a Meroptera on genitalic characters. Its chain of 

 numerous, strong cornuti distinguish it from any species 

 in Meroptera or the American genera closely aUied to 

 Salebria. Oreanxi, on most characters, seems nearest to 

 Immyrla, from which it is at once distinguished by its 

 smooth forewing. It contains but the one described 

 American species. 



231. Oreana unicolorella (Hulst) 



FiGTJBEs 319, 788 



Dioryctria unicolorella Hulst, Ent. Amer., vol. 3, p. 136, 1887. 



Oreana unicolorella (Hulst), Ent. Amer., vol. 4, p. 115, 1888. 



Meroptera unicolorella (Hulst) Ragonot, Ent. Amer., vol. 5, p. 

 115, 1889; Monograph, pt. 1, p. 315, 1893.— Hulst, Phy- 

 citidae of N. Amer., p. 149, 1890. — Forbes, Cornell Mem. 

 68, p. 624, 1923. 



Myelois leucophaeella Hulst, Canadian Ent., vol. 24, p. 60, 1892. 



Meroptera leucophaeella (Hulst), Barnes and McDunnough, Con- 

 tributions, vol. 3, p. 194, 1916. 



Meroptera nebulella McDunnough (not Riley), Check list, No. 

 6185, 1939. 



Forewing mouse gray, the basal area slightly paler 

 than remainder of wing; transverse lines grayish white, 

 obscure; antemedial line obUque, notched below ceU, 

 bordered outwardly from costa for a short distance by an 

 obscure blackish shade; subterminal line sinuate, with- 

 out appreciable dark borders; discal dots faint, brown, 

 usuaUy separated but sometimes confluent; on underside 

 of male forewing a streak of blackish sex scaling along 

 basal third of costa. Hind wing pale smoky brown, the 

 veins slightly darkened. Alar expanse, 18-22 mm. 



Male genitalia with harpe, tegumen, and vinculiun 

 similar to those of Immyrla nigrovittella. Uncus some- 

 what smaUer in proportion; in natm-al position inclined 



