Acroneuria azunensis Stark &amp; Sivec 2008, sp. n.
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Acroneuria
Acroneuria azunensis

description: <i>Acroneuria azunensis</i> sp. n. (Figs. 9&amp;hyphen;15) <b>Material examined.</b> Holotype &amp;male;, 7 &amp;male;, 6 &amp;female; paratypes from Vietnam, Gia Lai Province, An Khe District, Tram Lap, Azun River, 2 km northwest on trail from forestry building, 17 June 1996, D. Currie, J. Swann, ROM 961056 (ROM). Additional Paratypes: Vietnam: Same site as holotype, 23 June 1996, D. Currie, J. Swann, ROM 961084, 1 &amp;male;, 2 &amp;female; (IEBR). Same data but 3 km northeast of forestry building, 21 June 1996, D. Currie, J. Swann, ROM 961076, 1 &amp;male;, 1 &amp;female; (BPS). Same data but 1 km southwest on trail from forestry building, 18 June 1996, B. Hubley, ROM 961057, 2 &amp;male; (ROM). Gia Lai Province, An Khe District, Dacklest River, 5.2 km northeast Tram Lap on forest road, 15 June 1996, D. Currie, J. Swann, ROM 961047, 3 &amp;male; (ROM). Gia Lai Province, Buon Li Mountains, Kon Cha Range, 1000&amp;hyphen;1200 m, 14&amp;hyphen;20 April 1995, A. Gorohov, 1 &amp;male;, 1 &amp;female; (PMSL). Same location, May 1995, A. Gorohov, 1 &amp;male;, 1 &amp;female; (PMSL). <b>Adult habitus.</b> Triocellate. General color yellow patterned with dark brown. Head yellow with dark ocellar patch (Fig. 9). Pronotum pale brown with scattered brown rugosities; meso and metathorax each with lateral dark spot; mesonotum dark brown between wing bases. Femora banded, pale on proximal 2/3, dark apically (Fig. 13); fore tibiae mostly brown, mid and hind tibiae brown along dorsal margin but paler ventrally. Wings pale yellow brown. Antennal segments 2&amp;hyphen;26 brown, but pale beyond; cerci pale. <b>Male.</b> Forewing length 21&amp;hyphen;22 mm. Paraprocts triangular, heavily sclerotized in apical half but with circular membranous area near base (Fig. 10). Volume 4 – Number 16 – Page 156 Tergum 10 with large mesal sensilla basiconica patch continuous across center of segment (Fig. 10); tergum 9 without sensilla basiconica patch. Aedeagus a relatively cylindrical membranous bag with slender apex, armed with patches of variably sized, small to minute spines (Fig. 11); basal section completely ringed by broad band of densely packed, small, triangular scale setae; mid section armed with scattered fine setal spines; tip not completely everted, but apparently sparsely armed with microtrichia. Dorsal aspect with an uneverted gonopore lobe near midlength. <b>Female.</b> Forewing length 26&amp;hyphen;27 mm. Subgenital plate broadly produced over 2/3 of sternum 9, hind margin emarginate or weakly notched (Fig. 12); plate surface covered with scattered, upright, prominent bristles. Vagina slender, more or less cylindrical, with robust spermatheca about 2/3 vaginal length; apex of spermatheca hooked ventrad and bearing elongate accessory glands. <b>Egg.</b> Length ca. 0.32 mm, diameter ca. 0.24 mm. Outline pear shaped, collar button&amp;hyphen; like. Chorion smooth or with very faint follicle cell impressions (Figs. 14&amp;hyphen;15). Micropyles located near anterior pole. <b>Larva.</b> Unknown. <b>Etymology.</b> The species name is based on the Azun River where most of the type series was collected. <b>Diagnosis.</b> Although <i>A. azunensis</i> is similar to both <i>A. apicalis</i> and <i>A. bachma</i> in general color pattern, the uniformly yellow wing membrane and longitudinally bicolored mid and hind tibiae are distinctive. The species is more similar to <i>A. apicalis</i> but differs from that species in lacking dark wing tips and black cerci and in the absence of dense patches of setal spines on
description: Published as part of <i>Stark, Bill P. &amp; Sivec, Ignac, 2008, New Vietnamese Species Of Genus Acroneuria (Plecoptera: Perlidae), pp. 154-160 in Illiesia 4 (16)</i> on pages 156-157, DOI: 10.5281/zenodo.4754763