NO. 3535 MICROLEPIDOPTERA, IX — OBRAZTSOV 579 



contributed much to the accumulation of the Neotropical Microlepi- 

 doptera in the U.S. National Museum. 



Polyorthini, new tribe 



Tincidae (in part). — Dognin, 1912, H^tcroceres nouveaux de TAmerique du 



Slid, fasc. 6, p. 50. 

 Tortricidae, groups B (in part) and D (in part) Meyrick, 1913, in Wytsman, 



Genera insectorum, fasc. 149, pp. 20 and 47. 

 Atteriidae (in part) Busck, 1932, Bol. Biol., vol. 21, p. 44. 

 Ceracidii (in part). — Diakonoff, 1939, Zool. Meded. Rijksmus. Nat. Hist., vol. 



21, p. 128. 



Head with face more or less smooth. Antenna simple or false 

 serrate because of slightly raised scales; in male shortly pubescent 

 with setae protruding, cilia not longer than width of antennal shaft, 

 in female with setae only. Labial palpus porrect, moderate to very 

 long, tapering distad, rarely with second segment dilated by scales. 

 Vein Rs of forewing to costa or apex; no costal fold in male. 



Male genitalia. — Eighth abdominal segment with large, well- 

 developed coremata, one on each side of segment; clusters of long 

 hair arising from these coremata, in resting position hidden in folds 

 of valvae. Uncus moderate to rather long, variously shaped, often 

 with an apical thorn directed ventrad and at base generally accom- 

 panied by a soft papilla; socius moderate to large, hairy, generally 

 padlike with broad base, pendant, occasionally modified; gnathos 

 with lateral arms distally fused into a middle process. Valva very 

 broad, folded outward along saccidus, crossing it longitudinally at 

 about middle, and thus forming a kind of pocket opened costally 

 and externally; sacculus slightly sclerotized at base, then occasionally 

 prolonged as a narrow strip along edge of fold of valva; costa some- 

 times sclerotized, occasionally with a rudimentary harpe; no pulvinus 

 and processus basalis. Fultura superior shaped as a transverse bar 

 between upper inner angles of valvae; vallum penis generally with 

 a lamina praeputialis. Aedeagus generally thick, robust, occasionally 

 slender, mostly with an apical process, often with sculptures in apical 

 portion ; cornutus as a ride single, large, cornif orm or variously platelet 

 shaped; rarely more than one cornutus or no cornuti; cuneus of little 

 spines or thorns often present. 



Female genitalia. — Papillae an ales broad, pelmiform, hairy; 

 eighth abdominal segment rather short; ovipositor, if developed, 

 formed by three narrow, subcylindrical, retractable segments, and 

 ending with minute papillae an ales. Sinus vaginalis wide, more or 

 less infundibular, deep or rather flat, located caudad of seventh 

 abdominal segment, and as broad as latter; sterigma simple, composed 

 of a rather narrow, band-shaped, transverse lamella antevaginalis 



