Anacroneuria angusticollis (Enderlein)

Neoperla angusticollis Enderlein 1909:409 . Holotype ♂ (Polish Academy of Sciences, Warsaw), Rio Magdalena, Colombia.

Anacroneuria unicolor Klapálek 1922:94 . Holotype ♂, Colombia, syn. Zwick (1973)

Anacroneuria angusticollis: Stark et al., 1999:17 . Redescription

Material examined. Colombia: [Putumayo Department], Santa Rosa de Sucumbios, Kofan Indian Village, Rio San Miguel, 400 m, 26 August-9 September 1971, B. Malkin, 1♂ (CAS) .

Comments. The holotype specimen, and the holotype for the synonym are both from Colombia, but this is the first new record of the species from Colombia since the original descriptions were published, and the first where the collection sites are clearly defined. Both holotypes were taken from the Rio Magdalena, however the precise locality along the approximate 1500 km of stream length is unknown. The “Kofan Indian Village” site for our specimen is located in the Amazon Natural Region . The San Miguel River is a tributary of the Putumayo River and together these streams form the southeastern border of Colombia with Ecuador and Peru.