a, b, c - Holotype of U. viterboana alva Evans (BMNH), Mexico: Veracruz: Atoyac, d - unknown specimen (BMNH) glued to card with holotype (see text) (Genit. Prep. SRS-453); e - Colombia: Cauca: Santander 950 m. (Genit. Prep. SRS-286); f - (BMNH), Bolivia: Yungas & La Paz 1000 m. (det. as belli by W. H. Evans) (Genit. Prep. SRS-430); g - El Salvador: Cerro San Jacinto 8-900 m. (Genit. Prep. SRS-246). Image from: Steinhauser, Stephen Rogers 1981. A revision of the proteus group of the genus Urbanus Hübner. Lepidoptera: Hesperiidae. Bulletin of the Allyn Museum 62: 1-41, 61 figs. (4 September). p. 17-19, f. 35