Drepanoneura gen. nov. for Epipleoneura letitia and Protoneura peruviensis, with descriptions of eight new Protoneuridae from South America (Odonata: Protoneuridae) Author Ellenrieder, Natalia Von Author Garrison, Rosser W. text Zootaxa 2008 1842 1 34 journal article 10.5281/zenodo.183222 5f96ed66-37a9-429d-bd7d-0cb8486df61e 1175-5326 183222 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 ).