Drepanoneura donnellyi, Ellenrieder, Natalia Von & Garrison, Rosser W., 2008

Ellenrieder, Natalia Von & Garrison, Rosser W., 2008, Drepanoneura gen. nov. for Epipleoneura letitia and Protoneura peruviensis, with descriptions of eight new Protoneuridae from South America (Odonata: Protoneuridae), Zootaxa 1842, pp. 1-34 : 9-13

publication ID	https://doi.org/ 10.5281/zenodo.183222
DOI	https://doi.org/10.5281/zenodo.6231938
persistent identifier	https://treatment.plazi.org/id/038087FC-FFD3-490C-FF66-D47B7752FAD0
treatment provided by	Plazi
scientific name	Drepanoneura donnellyi
status	sp. nov.

Treatment

Drepanoneura donnellyi View in CoL sp. nov.

Figures 2 View FIGURE 2 a–b, 3, 11a, 13, 27a–30a, 36a–b, 37

Etymology. We name this species donnellyi (noun in the genitive case) in honor of our friend and colleague Thomas W. Donnelly, who first noted differences between his new species D. letitia and both Epipleoneura and Psaironeura , in recognition of his life-long contributions to the knowledge of New World Odonata and his continuing assistance throughout our studies.

Specimens examined. Total 65 ɗ, 2 Ψ.— Holotype ɗ: Colombia, Antioquia Department, Cristalina (06°29'N, 74°50'W, 320 m), 13 ii 1917, leg. J.H. & E.B. Williamson (UMMZ). Paratypes: 14 ɗ, same data as holotype (UMMZ); 2 ɗ, same data (USNM); 2 ɗ, same data (TWD); 9 ɗ, 1 Ψ, same data (RWG); 2 ɗ, same data but 12 ii 1917 (RWG); 9 ɗ, same data but 14 ii 1917 (UMMZ); 1 ɗ, same data but 15 ii 1917 (UMMZ); 1 ɗ, same data but 17 ii 1917 (UMMZ); 1 ɗ, 1 Ψ, same data but 18 ii 1917 (UMMZ); 5 ɗ same data but 19 ii 1917 (UMMZ); 2 ɗ same data but 19 ii 1917 (RWG). Tolima Department: 10 ɗ, Mariquita (05°12'04''N, 74°54'46''W, 450 m), 0 4 ii 1917, leg. J.H. & E.B. Williamson (UMMZ); 6 ɗ, same data (RWG).

Male holotype. Head. Labium, ventral third of labrum, anteclypeus, and second antennal segment pale yellow; base of mandibles, genae, and ventral half of antefrons pale blue; remainder of head black.

Thorax. Prothorax, mesepisternum, mesepimeron, portion of metepisternum posterior to metastigma, and dorsal portion of metepimeron black with metallic green and copper reflections; portion of metepisternum anterior to metastigma, ventral portion of metepimeron, and pterothoracic venter pale yellow ( Fig. 2 View FIGURE 2 a); coxae blackish; trochanters yellow; femora yellow with three black bands; tibiae, tarsi, and pretarsi yellow with black apices; 5 spurs on metafemora, 6 on metatibiae. Hw 5.1 times as long as wide; 11 Px in Fw, 9 Px in Hw; MP reaching wing margin at 1/4–1/3 of cell distal to vein descending from subnodus; IR2 arising just distal to vein descending from subnodus in left Fw and at vein descending from subnodus in right Fw and in both Hw; IR2 and RP 3 separated by a short crossvein one cell posterior to their origin; RP 2 beginning closer to Px 5 in Fw and to Px 3 in Hw; pt brown with pale brown marginal hairline, shorter than underlying cell, with costal side as long as posterior side ( Fig. 11 View FIGURE 11 a).

Abdomen. Dorso-laterally black with metallic reflections except for narrow pale brown bands interrupted medio-dorsally on base of S4–7, latero-ventral portion of terga and sterna pale brown to yellow. Apex of genital ligula entire with long and narrow latero-distal lobes curved distally (as in Figs. 13 View FIGURES 13 – 20 a, c). Dorso-posterior margin of S10 not or only slightly projected posteriorly ( Figs. 27 View FIGURE 27 a–29a). Ventral branch of cercus as long as base of cercus, approximately cylindrical (as in Fig. 28 View FIGURE 28 a), in posterior view aligned with inner margin of cercus and diverging from ventral branch of opposite cercus at tip ( Fig. 30 View FIGURE 30 a). Paraproct pointed (as in Fig. 28 View FIGURE 28 a).

Dimensions. Total length 34.0 mm; abdomen length 29.1 mm; Hw 17.6 mm.

Paratypes. Paratypes are similar to holotype but vary as follows: narrow yellow humeral stripe present in juvenile specimens and females; femora banded to entirely dark brown; 4–6 spurs on metafemora, 5–6 on metatibiae; Hw 4.8–5.3 times as long as wide; 11–12 Px in Fw, 9–10 Px in Hw; MP reaching wing margin between vein descending from subnodus to half-length the cell distal to it; RP 2 beginning closer to Px 3–4 in Hw. Females have the dark color of thoracic dorsum extending to ventral margin of mesepimeron, reaching second lateral suture only at its posterior end ( Fig. 2 View FIGURE 2 b); the posterior margin of female prothorax is smoothly concave, with a small laminar ventro-lateral process on each side ( Fig. 3 View FIGURES 3 – 10 ); the dorsal side of sub-basal plate of ovipositor is concave and the ventral side is slightly convex ( Fig. 36 View FIGURE 36 a).

Dimensions. Males (n = 10): total length 33.2–36.1 mm [mean 34.1 mm; SD 0.8]; abdomen 28.2–29.4 mm [mean 28.9 mm; SD 0.4]; Hw 17.2–18.0 mm [mean 17.6 mm; SD 0.3]. Females (n = 2): total length 31.9– 33.2 mm; abdomen 26.9–28.4 mm; Hw 18.4–18.6 mm.

Diagnosis. Male is most similar to D. letitia and can be separated confidently from it only by its genital ligula with an approximately linear apex and long and narrow latero-externally directed apical lobes ( Fig. 13 View FIGURES 13 – 20 a) as described in couplet 7 in the key. Male further differs from D. flinti , D. muzoni , and D. peruviensis by having its cercus ventral branch aligned with cercus inner margin and diverging from branch of opposite cercus towards tip ( Fig. 30 View FIGURE 30 a), from D. janirae by having its ventral branch of cercus longer than base of cercus, and from D. loutoni and D. tennesseni by its pointed paraproct ( Fig. 28 View FIGURE 28 a). Female is easily distinguished by its unique posterior margin of prothorax: smoothly concave with a short, as long as wide ventro-lateral process on each side ( Fig. 3 View FIGURES 3 – 10 ).

Biology. Adults were collected along a small stream within densely wooded forest, where the stream was one to three feet wide and frequently disappeared within the gravel bed ( Williamson 1918).

Distribution. Antioquia to Tolima Departments in Colombia ( Fig. 37 View FIGURE 37 ).