166 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



18. Genus OLETHREUTES HUbner 



(Figs. 13, 40) 



Olethreutes Hubner, Tentamen, 1806 (—Roxana Stephens). 



Genotype. — Phalaena Tinea arciieUa Clerck (Europe). 

 Argyroploce Hubneb, Verz. Schmet., 182G, p. 379. 



Genotype. — Phalaena Tinea arbutella Linnaeus (Europe). 

 Phiaris Hubneu, Verz. Schmet., 1826, p. 381. 



Genotype. — Tortrix mieana Hijbneu (Europe). 

 Celypha HtJBNER, Verz. Schmet., 1826, p. 382. (= Sericoris Treitschke). 



Genotype. — Phalaena rivulana Scopoli (= conchana Hiibner) 

 (Europe). 

 Orthotaenia Stephens, Cat. Brit. Ins., vol. 2, 1829, p. 181. 



Genotype. — Tortrix striana Denis and Schiffermiiller (Europe). 

 Selenodes GuEN:fiE, Eur. Mierolep. Index Method., 1845, p. 26. 



Genotype. — Selenodes dalecarliana Guen^e (Europe). 

 Mixodia Guenee, Eur. Mierolep. Index Method., 1845, p. 26. 



Genotype. — Pyralis schulziana Fabricius (Europe). 



Thorax with jDOsterior tuft. 



Forewing smooth; termen convex or straight; 12 veins; all sep- 

 arate; 7 to termeo; 8 and 9 normally approximate at base, rarely 

 much separated {costimaculana) ; upper internal vein of cell from 

 between 10-11; 3, 4, and 5 not aproximate at termen; 2 from cell 

 usually before 2/3, rarely beyond 2/3 (p'me(9aZ5a7ia), usually straight, 

 rarely bent upward beyond middle {costimaculana) . 



Hind wing with 8 veins ; 6 and 7 approximate toward base ; 3 and 

 4 connate; 5 approximate to 4 at base; termen without appreciable 

 notches at veins 5, Ic, or lb ; inner margin simple or bearing, in male, 

 a slight chitinous ridge or thickening of the membrane. 



Hind tibia of male with hair pencile from base. 



Male genitalia with harpe elongate and sometimes bearing a short 

 row of flat hair-like spines on outer surface, usually without such; 

 cucuUus seldom more than half the length of harp, narrow, densely 

 spined; sacculus normally extended in an arch over and pocketing 

 neck; spine clusters Spc^ and S'pc^ usually present and strongly de- 

 veloped, latter {Spc^) variously modified ; spines at base of sacculus 

 short and weak. Uncus present ; sometimes abbreviated but normally 

 developed; weakly chitinized; tip weakly spined (except in costi- 

 maculmia, denotana^ mengelana^ and a few exotic species). Socii 

 present, often small; hairy and flexible. Gnathos normal. 

 Aedoeagus short or long; very slightly bent; cornuti present or ab- 

 sent, if present one, two or a small cluster of short spines. 



Female genitalia with signum present or absent; when present 

 a scobinate patch occasionally produced into a hollow spine. Ductus 

 bursae moderately long; unchitinized except near genital opening. 



