Heteragrion peregrinum Williamson, 1919

Bota-Sierra, Cornelio Andrés & Novelo-Gutiérrez, Rodolfo, 2017, The genus Heteragrion (Odonata: Zygoptera) in Northwestern Colombia, with the description of Heteragrion tatama sp. nov., Zootaxa 4347 (3), pp. 553-571 : 567

Heteragrion peregrinum Williamson, 1919

This species, together with Palaemnema edmondi Calvert, 1931 , are the only ones found in the Magdalena Valley by the Williamsons in 1917, which have not been seen again since their expedition. The Williamsons collected 50 specimens of H. peregrinum in just one week, which shows this species used to be a common inhabitant of the Magdalena Valley streams (type locality Fig. 1 ). The fact that it has not even been registered any more, makes H. peregrinum a species of special interest, which was recently assessed as Critically Endangered in the IUCN red list ( Bota-Sierra et al. 2016). Here we present the first pictures of this species, from paratypes deposited at RWG ( Figs 3l , 4n–o , 8b–c ).

Figures

FIGURE 1. Recorded localities in Colombia for H. aequatoriale, H. erythrogastrum and H. peregrinum.

FIGURE 3. Face color pattern. H. aequatoriale, males: a, Cordillera Central, Santo Domingo; b, Cordillera Occidental, Jericó; c, Cordillera Occidental, Anchicayá; d, Cordillera Central, Carmen de Viboral; e, Cordillera Occidental, PNN Tatamá; f, Cordillera Central, San Luis; g, Cordillera Central, Amalfí; h, female, Cordillera Occidental, PNN Tatamá. H. calendulum: i, male, Santa Cecilia; j, female, Santa Cecilia; k, male Holotype (UMMZ), La Cristalina. H. peregrinum: l, female Paratype (RWG), La Cristalina. H. m. atroterminatum: m, male, Anchicayá; n, female, Santa Cecilia. H. tatama: o, male, PNN Tatamá; p, female, PNN Tatamá. Picture k, by Dr. O´Brien and l, by Dr. Garrison.

FIGURE 4. Dorsum of prothorax: a, H. aequatoriale female, PNN Tatamá. H. calendulum Santa Cecilia, b, male; c, female. d, H. m. atroterminatum female, Santa Cecilia. H. tatama PNN Tatamá, e, female; f, male. Female prothoracic intersternite: g, H. aequatoriale, PNN Tatamá; H. calendulum: h, Santa Cecilia; i, Rancho Frío (Panama); j, H. erythrogastrum, La Cristalina; k, H. m. atroterminatum, Santa Cecilia; H. m. mitratum: l, La Cristalina; m, La Fría (Venezuela); n-o, H. peregrinum, female Paratype La Cristalina; p, H. tatama, PNN Tatamá. Pictures l-o by Dr. Garrison.

FIGURE 8. a, Heteragrion erythrogastrum, Remedios, habitus male. Heteragrion peregrinum, La Cristalina: b, female Paratype, c, male Paratype. Heteragrion mitratum atroterminatum, Santa Cecilia: d, male cercus in middorsal view; e, male cercus in ventral view. f, H. calendulum, Darien, male cercus in ventral view (Photographs b and c by Dr. Garrison).