Epipotoneura nehalennia Williamson 1915

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 : 32-33

Epipotoneura nehalennia Williamson 1915

Figures 10 , 12 b–c, 26, 35, 36k–l, 38

Epipotoneura nehalennia Williamson 1915: 618 , 620, 630–635, figs. 10, 22, 33–34 (description of male and female; photograph of wings and illustration of thoracic color pattern and male S10); — Davies & Tobin (1984: 115; synonymic list); — Bridges (1994: VII.163; synonymic list); — Steinmann (1997: 446; synonymic list); — Tsuda (2000: 13; synonymic list); — Pessacq (2008: 16; key for males of Protoneuridae ).

Epipotoneura sp. — Machet (1989: 8; record for French Guiana).

Specimens examined. Total 3 ɗ, 2 Ψ.— Guyana, Upper Demerara-Berbice region: Holotype ɗ, Allotype Ψ, Potaro Landing (05°59'N, 58°33'W), 0 2 x 1912, leg. J.A. & E.B. Williamson & B.J. Rainey (UMMZ). Potaro- Siparuni region: 1 paratype Ψ [represented only by wings mounted on a slide], Tumatumari (05°17'N, 58°59'W, 20 m), 0 8 ii 1912, leg. J.A. & E.B. Williamson & B.J. Rainey (UMMZ). Brazil, Amazonas State: 2 ɗ, Manaus (03°06'48''S, 60°01'31''W, 34 m), 0 6 viii 1964, leg. A.B.M. Machado (RWG).

Characterization. Posterior lobe of pronotum smoothly convex ( Fig. 10 ). Hw ( Figs. 12 b–c) 5.1–5.2 times as long as wide; 10–11 Px in Fw, 8 Px in Hw; RP 2 beginning closer to Px 5 in Fw and closer to Px 3 in Hw. Genital ligula with apex entire ( Fig. 26 a) and paired inner processes distal to flexure ( Figs. 26 b–c). Male cercus about as long as male S 10 in lateral view, widest posteriorly to sub-basal tooth ( Figs. 35 a, c), which is low and not visible in medio-dorsal view ( Fig. 35 b). Female cerci conical, shorter than S10; outer valves of ovipositor with a single row of teeth along distal three fifths; sub-basal plate of ovipositor meeting its counterpart ventrally, with dorsal and ventral sides concave; tip of ovipositor (excluding stylus) extending beyond postero-dorsal margin of S10 but not surpassing tip of cerci ( Fig. 36 k).

Dimensions. Males (n = 3): total length 27.0–30.0 mm [mean 28.5 mm; SD 2.1]; abdomen 23.0– 25.5 mm [mean 24.2 mm; SD 1.8]; Hw 12.6–14.0 mm [mean 13.3 mm; SD 0.7]. Female (n = 1): total length 26 mm; abdomen 21.8 mm; Hw 15 mm.

Diagnosis. See under E. machadoi .

Biology. Adults were collected at rivers.

Distribution. Amazonas State in Brazil, Guyana, and French Guiana ( Fig. 38 ).

Figures

FIGURE 12. Wings. (a) Epipotoneura machadoi sp. nov., ♂ holotype Brazil, Rio Xingu; (b) E. nehalennia, ♂ Brazil, Manaus; (c) E. nehalennia, Ψ paratype Guyana, Tumatumari.

FIGURE 36. Ψ S 8 – 10. (a – b) Drepanoneura donnellyi sp. nov., paratype Colombia, Cristalina, (a) lateral view, (b) detail epiproct dorso-posterior view; (c) D. flinti sp. nov., lateral view paratype Colombia, Puerto Abeja; (d – e) D. letitia, allotype, (d) lateral view, (e) detail epiproct dorso-posterior view; (f) D. loutoni sp. nov., lateral view paratype Peru, Pakitza; (g – h) D. muzoni sp. nov., paratype Ecuador, Yasuni, (f) lateral view, (g) dorso-posterior view; (i) D. peruviensis, lateral view Peru, Iquitos; (j) D. tennesseni sp. nov., lateral view paratype Ecuador, Río Sandalias; (k – l) Epipotoneura nehalennia, allotype, (k) lateral view, (l) detail epiproct dorso-posterior view. ce: cercus; ep: epiproct; pa: paraproct; ov: ovipositor; sb: sub-basal plate of ovipositor.

FIGURE 38. Distribution map of Epipotoneura and Epipleoneura demarmelsi in the Neotropical region.

FIGURES 3 – 10. Ψ pronotum and mesostigmal plates: (a) pronotum, dorsal view, (b) pronotum, lateral view, (c) pronotum and mesostigmal plates, medio-dorsal view. (3) Drepanoneura donnellyi sp. nov., paratype Colombia, Cristalina; (4) D. flinti sp. nov., paratype Colombia, Puerto Abeja; (5) D. letitia, allotype; (6) D. loutoni sp. nov., paratype Peru, Pakitza; (7) D. muzoni sp. nov., paratype Ecuador, Yasuni; (8) D. peruviensis, Peru, Iquitos; (9) D. tennesseni sp. nov., paratype Ecuador, Río Sandalias; (10) Epipotoneura nehalennia, allotype. dl: dorso-lateral process; md: medio-dorsal process; mv: medio-ventral process; vl: ventro-lateral process.

FIGURES 21 – 26. ♂ genital ligula: (a) ectal view, (b) lateral view, (c) latero-ental view. (21) Eplipleoneura capilliformis Brazil, Obidos, in RWG; (22) E. demarmelsi sp. nov., ♂ paratype Venezuela, Salto Ángel; (23) E. haroldoi Brazil, Manaus, in RWG; (24) Phasmoneura exigua Brazil, Reserva Ducke, in RWG; (25) Epipotoneura machadoi sp. nov., ♂ holotype Brazil, Rio Xingu; (26) E. nehalennia Brazil, Manaus. ip: inner process; lp: latero-posterior lobe.

FIGURES 34 – 35. ♂ S 10: (a) lateral view, (b) medio-dorsal inner view, (c) medio-ventral outer view, (d) dorsal view, (e) detail dorsal view epiproct. (34) Epipotoneura machadoi sp. nov., holotype Brazil, Rio Xingu; (35) E. nehalennia, holotype. ce: cercus; ep: epiproct; pa: paraproct; st: sub-basal tooth.