Heteragrion peregrinum Williamson, 1919

(Figs. 6 E–F, 11A–C, 15G–I, 20)

Material examined: UARC: 1 ♂, 1 ♀ 24 July 2010 Chocó Department, Unión Panamericana Municipality, Cor- regimiento Salero 6.6108, 74.5771 100m a.s.l., Leg: L. Pérez and J. Montes , 1 ♀ 26 September 2005, Tutunendo Municipality, Quebrada El Diablo 5.7513, -76.5331 71m a.s.l, Leg: L. Pérez . ANDES–E: 1 ♀ 24 July 2010 Chocó Department, Unión Panamericana Township, Corregimiento Salero 6.6108, -74.5771 100m a.s.l., Leg: L. Pérez and J. Montes . CEUA: 1 ♂ 26 September 2018 Risaralda Department, Pueblo Rico Municipality, Corregimiento Santa Cecilia, Alto Amurrupá Reserve, Ranas de Cristal stream, 5.3203, -76.1736 620m a.s.l., Leg: C. Bota .

Remarks: This species was described by Williamson (1919) based on a series of 33 males and 17 females collected in a couple of weeks. Bota-Sierra (2016) catalogued it in the IUCN red list as Critically Endangered (CR) because, since its discovery by Williamson in 1917, it had not been found again. Despite of sampling efforts at the type locality and surrounding areas, where a large amount of its habitat had disappeared. Bota-Sierra & Novelo-Gutiérrez (2017) presented images of color pattern of head and thoracic intersternites of paratypes deposited in Rosser W. Garrison personal collection (RWG). We rediscovered this species at new localities in Chocó and Risaralda Departments. Photographs of male cerci (Fig. 11 A–C), female intersternite, genital valves (Fig. 15 G–I) and head color pattern (Fig. 6 E–F) are presented.

Color pattern of head of males is very similar to H. angustipenne because of the black postclypeus, but H. peregrinum differs in having abdomen length close to 35mm, while in H. angustipenne abdomen is longer than 39mm, and the angle between medial process and tip of cerci is close to 90° in H. angustipenne (Fig. 7D), but close to 45° in H. peregrinum (Fig. 11A). Female is characterized by having an intersternite with a digitiform dorsal plate (Fig. 15I).