108 U.S. NATIONAL MUSEUM BULLETIN 244 



Feb. 28-March 18, USNM. Colima, cf, May 24, BM. Guadalajara, 4 d'd', 

 May; ? , April 18, case USNM; 4 cases, AMNH. Misantla, case, BM. Tabasco, 

 2 cf c?, Feb. 14, DEI. 



ARGENTINA: Chaco Austral, Ingenio Las Palm., case, DEI. La Rioja, 4 

 cf cf , BM; case, CU; d^, 9 cases, USNM. Tucuman, cf , May 1-15, BM. 



BOLIVIA: Cochabamba, case, ZSBS. 



BRAZIL: Amazon, de Teflfe A Tonantins, cf, Nov., USNM. Castro, Parand, 

 4 c?cf, Jan.; 4 d" cf , BM; cf, Feb., USNM. Fonte Boa, Upper Amazon, 

 2 cf cf , May, BM. Kourou River mouth, cf , Feb., BM. Neu Bremen, Sta. 

 Catarina, 4 cf cf , Feb. 16-March 10, CU. Nova Teutonia, 9 cf cf, Jan. 15-28; 

 cf, Feb. 11; 4 cf cf , Dec. 4-9, USNM. Obidos, cf, Aug. 21, CM. Pelotas, cf, 

 Jan. 29; 4 cases, CU. Ponta Grossa, Parand,, cf, March, MCZ. Rio, cf, BM. 

 Sao Paulo, Alto de Serra, cf, Oct.; 2 cf cf ,Nov.; 2 cf cf , Dec, BM. 



BRITISH GUIANA: Aroewarwa Creek, Maroewyn Valley, cf, April; 3 cf cf , 

 May; cf, July, BM. 



FRENCH GUIANA: St. Jean de Maroni, cf , July; cf , BM. 



URUGUAY: La Estanzuela, cf, Jan., MCZ. 



VENEZUELA: San Esteban, cf , June, BM. 



45. Oiketicus zihuatanejensis Vazquez 



Figures 44, 45, 97, 186, 227, 286, 286a; Map 10 



Oiketicus zihuatanejensis Vazquez, Anales Instit. Biol., vol. 22, no. 1, p. 323, 

 photos 1-5, pis. 1-3, 1951; in Mem. Congr. Cient. Mex., Vll-Cienc. Biol., 

 pp. 325, 333, 336, 339, fig. 7f, 1953, 



Male. — (Figs. 44, 45.) Antennae with approximately 40 segments; 

 pectinations decreasing gradually in length toward apex, strongly 

 biserrate in outer fourth or fifth. Hairs of body dark fuscous. Fore- 

 leg with (fig. 186) tibia relatively broad, flat; first tarsal segment 1.5x 

 length of second. First tarsal segment of middle leg slightly longer 

 than second. Femur of hindleg greatly dilated, globose. Tibiae of 

 second and third legs each with pair of apical spurs. 



Wings essentially lacking in scales, semitransparent ; venation 

 extremely variable (see Vazquez, 1951). Primaries with outer margin 

 strongly oblique; either 11- or 12-veined; R3 and R4 normally stalked, 

 sometimes partially atrophied or completely fused; M2 and 3 usually 

 completely fused, occasionally separate or stalked, M2 in various 

 stages of atrophy. Cui in few examples dividing just before margin. 

 Secondaries normally 8-veined, may be reduced down to 4; Sc+Ri 

 often partially atrophied; basal crossvein, spurs of Sc absent; Mi 

 frequently missing, sometimes M2; base of M simple in cell, occasion- 

 ally absent; termen evenly rounded. Wing expanse 25-30 mm. 



Male genitalia.^ — ^(Fig. 286.) Apex of tegumen with shallow, 

 distinct notch. 



Female. — Not examined. Length "18 to 19 mm., in alcohol" 

 (Vazquez, 1951). 



Case. — Length "35 to 53 mm." (Vazquez, 1951); diameter 6-7 

 mm. As described for subgenus. 



