Two new Andean species of the genus Ischnura Charpentier from Colombia, with a key to the regional species (Zygoptera: Coenagrionidae)

I. chingaza sp. n. (holotype 6; Cundinamarca Dept, Parque Nacional Natural Chingaza, Quebrada La Playa, alt. 3164 m a.s.1., 10-V-2005) and I. cyane sp. n. (holotype 6: Cundinamarca Dept, Francisco de Sales. Vereda San Miguel, alt. 1984 ra a.s.1., l-XII-2004) are described and illustrated. The types are deposited at Mus. Hist. Nat., Univ. Andes, Bogota. A key to the regional spp. is appended.