Perilestes attenuatus J.C. De Marmels 1989, spec. nov.
Creators: name: J. C. De Marmels
Publisher: name: Zenodo
Year: 1989
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Lestidae
Perilestes
Perilestes attenuatus

description: <i>Perissolestes</i> flinti spec. nov. Figures 48 <b>-</b> 52 <b>Male (</b> holotype <b>).</b> <i>Venezuela</i>, <i>Territotio</i> Federal Amazonas. <i>Departamento</i> Rio Negro, Cerro <i>Neblina</i>, Camp <i>V</i>, 1250 m, 00° <b>49</b> '10 <b>"</b> N, 66°00 <b>'</b> 02''W, 23 <b>-</b> 24 Mar <b>1984,</b> O. <b>Flint leg.</b> <i>Material</i> <b>(</b> 5 <i>&amp;male;</i>, including holotype and paratypes <b>).</b> All <b>with the same data</b> as <b>holotype.</b> <b>Male (</b> <i>holotype</i> <b>).</b> Labium <i>pale</i>; inferior <b>parts of</b> head coppery black; <i>labrum</i> and <i>frontal portion</i> of clypeus <i>white</i>, <b>the</b> former <i>with</i> <b>a</b> <i>narrow black distal</i> border; <i>dorsal surface</i> <b>of</b> clypeus <b>and</b> upper <b>parts of head</b> black <i>with</i> coppery reflections. <b>First</b> antennal <i>segment paler brown</i> than <b>the</b> remaining <i>segments</i>. Prothorax brown with <b>a</b> pale <i>longitudinal band</i> on each <b>side</b> <i>representing a</i> prolongation <b>of the pale</b> mesepisternal humeral band. Posterior <i>lobe</i> with a <i>rounded projection</i> in <b>the</b> middle. <i>Anterior margin</i> <b>of</b> mesostigmal <i>lamina white</i>, raised in its external <i>half</i>. Pale middorsal carina <i>accompanied</i> <b>on</b> <i>each</i> side <b>by a dark line</b> <i>as</i> broad <i>as</i> carina itself; <i>remainder of</i> mesepisternum <i>brown</i> except for pale humeral stripe occupying one third <b>of</b> mesepisternum. This stripe reaching anteaiar sinus, <i>which</i> <b>is</b> also pale behind humeral <i>stripe</i>; mesepimeron and nearly all of <i>mesinfraepisternum</i> dark brown; metepisternum <i>and</i> metepimeron white, the suture between them bordered on the metepister- num <b>by a</b> narrow black brown <i>stripe</i> continuing ventrally <b>across</b> upper half <i>of</i> metakatepisternum, <b>dorsally</b> approaching <i>antealar</i> <b>sinus and</b> <i>ending</i> <b>in a</b> low curve <i>towards middle</i> <b>of</b> metepisternum. Sternum between coxae <b>black,</b> <i>metasternum</i> <b>as in</b> <i>Figure</i> 52. <i>Femora</i> pale brown becoming black distally and <i>ventrally</i> along outer <b>row</b> of spines; tibiae black <i>at base</i> becoming <i>almost</i> white distally; tarsi pale at <b>base</b> <i>becoming</i> black <i>distally</i>. Wings slightly <i>smoky</i>; pterostigma red brown covering more than <i>one</i> cell; <i>venation</i> black, <i>paler</i> basally. 14 <b>(</b> 12 <b>)</b> postnodals <b>in</b> fore <i>wings</i>, <b>13 in</b> hind wings. R <b>4</b> originating at first postnodai; IR <b>3</b> <i>at eighth</i> <b>(</b> sixth <b>)</b> <i>postnodai</i> in fore <b>wings, at</b> seventh <b>in hind</b> <i>wings</i>. Ra <i>branching</i> <b>at</b> ninth <b>(</b> eighth <b>)</b> <i>postnodai</i> in all <i>wings</i>; <i>IR</i> <b>2</b> originating at twelfth postnodal in the left fore <i>wing</i>, <b>at</b> eleventh in <i>other</i> wings. Hind wings with 8 <b>(</b> 6 <b>)</b> <i>cells</i> behind Cu <b>2 (=</b> 1A <b>).</b> <i>Abdominal segments</i> 1 and 2 brown <i>dorsally</i>, white laterally; anterior lamina and penis <b>vesicle black (</b> Figures 51 <b>-</b> 52 <b>);</b> segment <b>3-8</b> <i>with</i> a <i>pale basal ring</i>, which <b>is</b> continuous <b>only</b> <i>on segment</i> <b>8,</b> while <b>on</b> remaining <i>segments</i> this basal ring divided into <i>three</i> pale <i>spots</i>, the lateral two enlarged <b>ventrally</b>; <i>segments</i> <b>3-6</b> <i>with</i> <b>a</b> <i>broad</i>, black <i>distal</i> ring, preceded <b>by a</b> <i>pale</i> <b>area</b> and, more <i>basally</i>, <b>by a</b> dark area, <i>which</i> follows the pale <i>basal</i> ring; segments 9 and 10 and appendages <b>(</b> Figures 48 <b>-</b> 49 <b>)</b> black <i>brown</i>; basal internal tooth <i>of superior</i> appendage pale. <i>Measurements</i>. Total length <b>(</b> excluding anal appendages <b>)</b> 60.5 mm; abdomen <b>(</b> excl. app. <b>)</b> 52 mm; anal appendages <b>1.4</b> mm; hind wing 26.2 mm. The Paratype <i>males are</i> similar to the holotype. Female. Unknown. Remarks. The genus <i>Perissolestes</i> Kennedy <b>is</b> here recorded for the first time from Venezuela. The new <i>species</i> is not particularly similar to any described species. I dedicate this new species to Dr. Oliver S. Flint, Jr., who not only collected the specimens, but merits recognition for his contribution to the knowledge of the insect fauna of Venezuela.
description: Published as part of <i>J. C. De Marmels, 1989, EXCERPT from: Odonata or Dragonflies from Cerro de la Neblina and the adjacent lowland between the Rio Baria, the Casiquiare and the Rio Negro (Venezuela) I. adults, pp. 1-3 in Boletin de la Academia de Ciencias Fisicas, Matematicas y Naturales 25</i> on pages 1-2, DOI: 10.5281/zenodo.3716113