BUTTERFLIES — HERRERA AND FIELD 513 



Distribution: The Andes of Colombia south through Ecuador into 

 northern Peru. 



Colombia: Department of Santander, Rio Suarez (900-1,000 m., August); De~ 

 -partment of Boyacd, Arcabuco (2,200-3,000 m., September) Samacd; Department 

 of Cundinamarca, Sau Miguel (3,000 m., August), La Calera (2,800 m., February), 

 Choachi (Decembei-), Aguadita (June); Department of Cauca, Paramo Malvoza 

 (3,400 m., July). Ecu adob.: Provijice of Tungurahua, Rfo Pastaza. Peru: Depart- 

 ment of Cajamarca, Cajaraarca; Department of Piura, Huancabamba (3,000 m.). 



Material studied: 12 males, 2 females. 



Tatochila distincta Jbrgensen 



Tatochila distincta Jorgeiisen, Anal. Mus. Nac. Hist. Nat. Buenos Aires, vol. 28, 

 pp. 443, 465-467, figs. 6, 7, Nov. 10, 1916.— Giacomelli, Physis, vol. 3, p. 377, 

 1917. — Rober, in Seitz, Die Gross-Schmetterlinge der Erde, vol. 5, p. 1016, 

 pi. 194, fig. a5, Jan. 21, 1924. — Talbot, in Strand, Lepidopterorum catalogus, 

 pars 53, Pieridae I, p. 59, Oct. 24, 1932.— Breyer, Verhandlungen VII Inter- 

 nationalen Kongress fiir Entomoiogie, vol. 1 (for 1938), p. 30, February 

 1939. — Hayward, Act. Zool. Lilloana Inst. "Miguel Lillo," vol. 9, p. 94, 

 Oct. 25, 1951. 



Venation: As illustrated (fig. 68). 



Legs: With paronychium, claw, and pulvillus as illustrated (fig. 82). 



Male: Plate 7, figure 26. Head with outer surfaces of palpi and 

 scales behind eyes white. Forcwings above white with dark markings 

 as illustrated, having black marginal sagittate markings much nar- 

 rower than in xanthodice and not covering the white veins along the 

 margin. Submarginal sagittate markings prominent and usually 

 confluent in forewing, absent or sometimes only faintly indicated on 

 hindwing. Hindwing above white sometimes with prominent black 

 scaling along both sides of the veins. Wings below with base and disc 

 of forewing white and with ground color of hindwing and apex of fore- 

 wing yellow, with veins silvery white outlined with gray in these areas. 

 Orange absent except in base, cell, and along costal margin of hind- 

 wing, thus differing from xanthodice. 



Length of forewing, 22-24 mm. (average, 23 mm.). 



Male genitaUa as illustrated (figs. 40, 54), with dorsal and ventral 

 incisions much more shallow than in xanthodice and forming two 

 lateral lobes that are nearly equal in size and shape. The genitalia 

 of five males were studied. 



Female: Plate 7, figure 26a. Head as in the male with outer 

 surfaces of palpi and scales behind eyes white. Wings above as illus- 

 trated, with ground color of forewing white and of hindMang white 

 with a yellowish tinge. Dark markings more extensive than in the 

 male, especially on the hindwing where the veins are wliite com- 

 pletely outlined on both sides by dark brown or black. All dark 



