118 U.S. NATIONAL MUSEUM BULLETIN 244 



with only questionable certainty. However, the principal feature 

 that separates these two sympatric species is the pronounced difference 

 in the architecture of their larval cases. The case of 0. t. mexicanus, 

 with longitudinally arranged twigs and complete absence of external 

 silk covering, is quite distinct from 0. kirbyi, a featm^e that further 

 suggests the subspecies' close affinities to 0. townsendi. 

 Material examined. — 16 cf^cf, 2 cases: 



MEXICO: Specific locality unknown, d^, type, 0. mexicanus, cf, ZMHU; 

 d', AMNH; d', USNM. Jalisco: Guadalajara, d, USNM. Mexico: Cha- 

 pultepec, 2 dd, April 6-20; 2 cases, AMNH; d, April 3; d, USNM; Lomos 

 de Chapultepec, 4d'cf, March 20- April 5; 2 dd, USNM; Molino del Rey, 

 Chapultepec, d, April 2, USNM. Veracruz: Misantla, d, type, 0. multiden- 

 tatus, AMNH. 



50. Oiketicus abbotii Grote 



Figures 52, 53, 106, 107, 108, 109, 232, 292, 313, 358; Map 12 



Oiketicus abbotii Grote, N. Amer. Ent., vol. 1, no. 7, p. 52, 1880. — Slossen, 



Ent. News, vol. 3, p. 49, 1892.— Kirby, Cat. Lep. Heter., vol. 1, p. 500, 



1892. — Dyar, Ent. News, vol. 4, p. 321, 1893.— Neumoegen and Dyar, 



Journ. N.Y. Ent. Soc, vol. 2, p. 118, 1894.— Dyar, U.S. Nat. Mus. Bull. 



52, no. 4062, 1902 [1903].— Grossbeck, Bull. Amer. Mus. Nat. Hist., 



vol. 37, p. 104, 1917. — Jones and Parks, Tex. Agric. Exp. Sta. Bull. 



382, p. 21, figs. 14, 15, 1928, — McDunnough, Check List Lep. Canada and 



USA, pt. 2, no. 9514, 1939. 



Oiketicus abboti [sic] Holland, Moth Book, p. 361, fig. 208, 1905.— Dalla Torre 



and Strand, Lep. Cat., pars 34, p. 193, 1929. — Gaede in Seitz, Macrolep. 



World, vol. 6, p. 1185, 1936. 



Male. — (Figs. 52, 53.) Antennae usually with 28-32 segments, 



outer two-fifths strongly biserrate to serrate. Vesture of body light 



brown to fuscous. Epiphysis reduced, approximately ji to ji length of 



foretibia. Meso- and metathoracic tibiae each with single, minute 



apical spur. 



Wings elongate, uniformly scaled. Primaries with scales (fig. 358) 

 of cell broadly oblanceolate, more or less rounded apices; discal area 

 and beyond usually dark fuscous (sometimes much paler in certain 

 Florida specimens), lower margin of darlv apical area straight, usually 

 continuing without interruption to lower margin of cell; lighter areas 

 of forewing, entire hindwing, usually much paler, light brown to 

 fuscous color; hyaline bar nearly but not quite parallel, strongly 

 oblique outer margin. Venation relatively constant; primaries 

 normally with 12 veins; rarely 11 (because of complete fusion of M2 

 and 3); 2A frequently with spur toward hindmargin. Secondaries 

 almost always 8-veined, sometimes Sc+Rj not reaching margin; 

 basal crossvein present, well developed; Sc with 1-2 costal spurs; 

 outer margin slightly excavate to nearly straight. Wing expanse 

 28-37 mm., x=34.1 mm. (n=92).* 



*For explanation of symbols, see ftn., p. 114. 



