Lestes helix Ris, 1918

Mendoza-Penagos, Cristian Camilo, Pérez-Gutiérrez, León A. & Muzón, Javier, 2024, A revision of Lestidae Calvert, 1901 (Odonata: Zygoptera) from Colombia, with the first record of Lestes dichrostigma Calvert, 1909, Zootaxa 5415 (2), pp. 201-240 : 231

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https://doi.org/ 10.11646/zootaxa.5415.2.1

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Lestes helix Ris, 1918


Lestes helix Ris, 1918 View in CoL

Fig. 5G View FIGURE 5 (♁ head), Fig. 8A–C View FIGURE 8 (♁ pterothorax), Fig. 9M–N View FIGURE 9 (♁ genital ligula), Fig.11I–J View FIGURE 11 (♁ caudal appendages), Fig. 16 View FIGURE 16 (distribution).

Etymology: helix, Greek (ελιξ) spiral, round, curved in reference to the curved apex of male cerci.

Type locality: Pachitea , Peru .

Distribution: Colombia (Amazonas, Guainía, Guaviare, Meta, Vaupés), Peru, Venezuela.

Female described: No Larva described: No

Altitudinal range: 88–495 m IUCN status: LC— von Ellenrieder (2009c)

Records in previous references: Bota-Sierra (2014a), Bota-Sierra et al. (2015), Aristizabal-Botero et al. (2022)

Material examined: (2♁♁, 1♀). Colombia, Guainía, Inírida, comunidad Coco Viejo , 3.9075N, 67.9089W, 83 m, 30-7-2014, A. Aristizabal, E. Realpe, J. Sierra, P. Sarmiento leg., 1♁ ( ANDES-E 21579 ) GoogleMaps ; Amazonas, Apaporis, río Sorotama , 1.0471N, 70.2241W, 103 m, 1♀ ( ICN) GoogleMaps ; Guaviare, Reserva natural Nukak Maku , Cerro Moyano , 2.1771N, 71.1901W, 153 m, 1♁ ( ICN) GoogleMaps .

Morphological characteristics (male): head mostly dark brown except posterior margin, labrum, clypeus, and mandibles pale blue ( Figs. 5G View FIGURE 5 , 8A–C View FIGURE 8 ); pterothorax dark brown, black antehumeral stripe with metallic luster; lateral black stripe occupying dorsal 0.5 of mesepimeron and mesinfraepisternum; ( Fig. 8A–B View FIGURE 8 ); pectum pale, metepimeron with two large subtriangular black spots reaching metapleural suture and two smaller at the end of the metathoracic suture ( Fig. 8C View FIGURE 8 ). Genital ligula rectangular, internal fold width more than 1/3 of S2 ( Fig. 9M View FIGURE 9 ), surface entire, reaching anterior fold of S2 ( Fig. 9N View FIGURE 9 ). Cerci long, with a bicuspid lobe in basal portion; edge of medial portion irregular; primary curvature type II ( Fig. 11I View FIGURE 11 ); secondary curvature type III ( Fig. 11H View FIGURE 11 ). Apophyses of paraprocts almost 1/3 of cerci length, apices curved ( Fig. 11J View FIGURE 11 ).

Remarks: This species is known from a few localities in Peru ( Ris 1918; Schmidt 1942), Venezuela ( De Marmels et al. 2022), and Colombia ( Bota-Sierra 2014a; Bota-Sierra et al. 2015). In Colombia, it occurs in the Amazon and Orinoquia regions and males are easily recognizable due to the unique cerci shape.


Colombia, Bogota, Universidad Nacional de Colombia, Insituto de Ciencias Naturales de la Universidad Nacional


Instituto de Ciencias Naturales, Museo de Historia Natural













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