Lestes dichrostigma Calvert, 1909

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 : 227-228

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

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Lestes dichrostigma Calvert, 1909


Lestes dichrostigma Calvert, 1909 View in CoL

Fig. 4I–J View FIGURE 4 (♁ and ♀ head), Fig. 7G–I View FIGURE 7 (♁ pterothorax), Fig. 9I–J View FIGURE 9 (♁ genital ligula), Fig.11E–F View FIGURE 11 (♁ caudal appendages), Fig. 13A–C B View FIGURE 13 (♀ pterothorax), Fig. 14E View FIGURE 14 (♀ ovipositor), Fig. 16 View FIGURE 16 (distribution), Fig. 23 View FIGURE 23 (♁ field photo).

Etymology: dichrostigma = dichros, Greek (δίχρως) for two–colored + stigma, Latin for mark, in reference to the bicolored pterostigma, which occurs only in the juvenile.

Type locality: Chapada, S„o Pablo-Brazil.

Distribution: Argentina, Brazil, Colombia (Vichada, Meta), Paraguay, Trinidad, Venezuela.

Female described: Yes Larva described: Yes—Muzón & Weigel-Muñoz (2007)

Altitudinal range: 155–184 m IUCN status: LC— von Ellenrieder (2009b)

Records in previous references: None

Material examined (5♁♁, 5♀♀). Colombia, Meta, Puerto Gaitán , 3.8050N, 72.2870W, 155 m, from Dec- 2014 to Jan-2015, L. Pérez leg., 2♁♁, 1♀ ( UARC) GoogleMaps ; as the previous but, vereda Jag ¸ey, 4.2190N, 72.1250W, 184 m, 2♁♁, 4♀♀ ( UARC) GoogleMaps ; Vichada, Puerto Carreño , 6.0947N, 67.7263W, 54 m, 23-8-2015, M. Sánchez, E. Realpe leg., 1♁ ( ANDES-E 16126 ) GoogleMaps .

Morphological characteristics: male and female mostly brown, ( Fig. 4I–J View FIGURE 4 , 7G–I View FIGURE 7 , 13A–C View FIGURE 13 , 23 View FIGURE 23 ), except the antehumeral dark stripe, mesepimeron with a dark-brown stripe; pectum pale with four black spots, two at the end of the metathoracic suture and two triangular in the metepimeron. Genital ligula rectangular, internal fold width more than 1/3 of S2, surface entire ( Fig. 9I View FIGURE 9 ), reaching anterior fold of S2 ( Fig. 9J View FIGURE 9 ). Male cerci long, with a basal subtriangular expansion; inner edge of medial portion irregular, reduced; primary curvature type II ( Fig. 11E View FIGURE 11 ), secondary curvature type II ( Fig. 11F View FIGURE 11 ). Apophyses of paraprocts almost 1/3 of the cerci length, apices ventrally curved ( Fig. 11F View FIGURE 11 ). Lateral valves of the ovipositor with a row of small denticles increasing in size to the apex; cerci not surpassing the length of S10; almost twice of the length of S10; dorsal margin of basal plate longer than ventral ( Fig. 14E View FIGURE 14 ).

Remarks: This species has a widespread and discontinuous distribution that ranges from Trinidad and Venezuela to Paraguay, southern Brazil, and northern Argentina ( De Marmels et al. 2022; Muzón 1993b; von Ellenrieder 2009b; Lencioni et al. 2022). Here we record this species for the first time in Colombia, the westernmost localities of its distribution.













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