REVISION OF THE OECOPHORIDAE— CLARKE 207 



KEY TO SPECIES OF PSILOCORSIS BASED ON FEMALE GENITALIA 

 1. Ductus bursae dilated before ostium (figs. 217, 220) 2 



Ductus bursae not dilated before ostium (tig. 106)^^^^,^^^^^ ^^^^^^ ^^ ^^^ 



2. Ostium and sc,eroti.ed portion of ductus b"-- -"„ ^^'cZeller) (p. 209, 



(ng. i/U; . 



Ostium and sclerotized portion of ductus bursae contiguous ^ 



(fig 217) 



3. BranOes of the signum 22-24 on each side (Sg. 222)^^^^^^^ ^^^^^^^ ^^ ^^^^ 



Branches of the signum 21 or less on each side (Ag^. 218, 221).. .- i 



4. Branches of the signum 15-16 on each side (flg. ^^)^^^^^^^^^ ^.^^^^ ^^ ^16) 



Branches of the signum 17-21 on each side... -.-... « 



5. Sclerotized anterior band of genital plate bro.diH^m ^^^^^^^^^^ ^^ ^^^^ 



Sclerotized anterior band of genital plate narrow (te^^^l*^^^ ^^^^.^^ ^^ ^^^^ 



PSILOCORSIS QUERCICELLA Clemens 



Pi^TE 3, FiGXJKE 24; Pi^tk 5, Figt;be 38; Pi^vte 8, Figxtt-es 59, 59a; Pl..te 17, 



FlGtTKE 105 



PsUocorsis auerciceUa Cx^emens, Proc. Acad Nat Sci. Plf adell^jia, vol- 12^ P- 212 

 1860; in Stainton, Tineina of North America, p. 147, 1S'2.-Busck, Pioa 

 Ent Soc Washington, vol. 5, p. 206, 1903.-Keakfott, ^n Smith, Check 

 List of the Lepidopte a of Boreal America, No. 6390, 1903.-Bx;sck, Proc. 

 U S Vat Mul vol. 35. p. 197, 190S.-Walsingham, Biol. Centr.-Amer., 

 Lepfdoptera-nete'rocera, vol. 4, p. 118, 119, 1912.-Bak.ks and McD...o.gh, 

 Check list of the Lepidoptera of Boreal America, No. 642o, 1917.-Foebes 

 Cornell UBiv Agr Exp. Stat., Memoir 68, p. 235, 1923; in Leonard, Cornell 

 SXi^ EXP S at., Memoir 101, p. 545, 1928.-F.etchek. Mem Dept Agr. 

 ?Mla (Ent. Ser.), vol. 11, p. 190. 1929.-Bkim.et, The insects of North 



0..^r:!:'^;^S;r;Clemens) z™ Ver. .ool..ots. ^.. ^^^ 

 240 1873.-CHAMBEKS, U. S. Geol. Geogr. Surv. Terr. Bull. 4, p. 120, 13- 

 ?8?8.-WA.siNGHAM, Ins. Life, vol. 2, p. 151, 1889.-Rn.KT, n. ^nnth, List 

 of the Lepidoptera of Boreal America, No. 5223, 1891.-Busck, ^n ^yar. U S. 

 Nat Mus Bull. 52. No. 5851, 1903.-Meybick, in Wytsman, Genera msec- 

 forum fasc. 180. p. l97, 1922.-McDunkough. Check list of the Lepidoptera of 

 Canada and th^ United States of America (Part 2, Microlepidoptera), No. 



P«n 'r;/f.'tdcna CHAHBKKS, U. S. Geol. Geogr. Surv. Terr. Bull. 4, p. 162, 



1878. . , u- 1 



Head and thorax dark yellowish brown. Second segment of labial 

 palpus ochreous with the usual dark fuscous longitudinal stripe be- 

 neath; third segment fuscous with median and atera longitudma^ 

 whitish stripes. Basal segment of antenna dark yel owish biown 

 above with fuscous and white longitudinal stripes beneath ; remainder 

 of antenna whitish ochreous with longitudinal fuscous stripes, the 

 latter breaking up into spots toward the distal end. Fore wing yel- 

 lowish brown mottled with short fuscous lines and spots; at the end 

 of cell a blackish-fuscous spot; around termen a narrow blackish 

 fuscous hne; before tornus, on inner margin, a fuscous shadmg; cilia 



