Neoperla song 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
Neoperla
Neoperla song

description: <i>Neoperla song</i> sp. n. (Figs. 57&amp;hyphen;61, 112&amp;hyphen;114) <b>Material examined.</b> Holotype &amp;male; and 1 &amp;male;, 1 &amp;female; (genitalia damaged) paratypes from Vietnam, Thua Thien&amp;hyphen; Hue, Bach Ma National Park near junction of Rhododendron and Five Lakes trails, 16 <b>°</b> 11’ N, 107 <b>°</b> 51’ E, 1200 m, 16 June 2000, B. Hubley, D.C. Darling, ROM 2000531 (Holotype and &amp;female; paratype ROM, &amp;male; paratype IEBR). Additional paratypes: Vietnam: Thua Thien&amp;hyphen; Hue, Bach Ma National Park, small stream 100 m past Five Lakes Trail, 9 June 2000, B. Hubley, ROM 2000518, 1 &amp;male;, 1 &amp;female; (pinned, ROM). Thua Thien&amp;hyphen; Hue, Bach Ma National Park, ca. 13 km on road from park entrance, 15 June 2000, B. Hubley, D.C. Darling, ROM 2000528, 1 &amp;female; (pinned, ROM). <b>Adult habitus.</b> Biocellate. Head with large dark area on frons covering ocelli, extending laterally to eye margins, forward to center of frons then abruptly constricted to a short mesal handle (Fig. 57); dark areas interrupted by two pairs of pale spots. Pronotum brown with darker rugosities; median suture, anterior and posterior margins black. Wing membrane amber, veins darker but costal area pale. Femora pale brown, tibiae brown but darker at knee. <b>Male.</b> Forewing length 11&amp;hyphen;12 mm. Process of tergum 7 short, wide and broadly rounded on posterior margin. Tergum 8 mesal sclerite not elevated, armed with scattered sensilla basiconica and bearing a Vshaped notch. Tergum 9 with a pair of low mounds sparsely armed with sensilla basiconica; mesal patch absent (Fig. 58). Hemitergal processes short and curved laterad. Aedeagal tube short, plump and poorly sclerotized; dorsoapical tube margin armed with a pair of low spinous lobes and ventroapical margins armed with a smaller pair of spinous lobes (Fig. 59). Aedeagal sac about as long as tube but curved ventrad; sac armed subapically with a linear patch of large cultriform spines; a patch of small spines occurs apically to large spines and sac bears additional patches of small spines along dorsobasal margin and laterally near base and proximal to large spines. <b>Female.</b> Forewing length 15 mm. Subgenital plate slightly produced but wide, involving more than half the posterior margin of sternum 8 (Fig. 60); margin of plate lined with long setae. Vagina longer than wide and constricted near midlength; anterior chamber somewhat quadrate and lined irregularly with brown scale spines. Spermathecal stalk and spermatheca short, curled at tip and slender (Fig. 61); a single accessory gland occurs near spermatheca tip. <b>Egg.</b> Length ca. 0.33 mm, width ca. 0.30 mm. Collar ca. 0.06 mm wide, very short and constricted at base (Figs. 112&amp;hyphen;114). Chorion without striae or follicle cell impressions, but with minute, shallow pits over entire surface. <b>Larva.</b> Unknown. <b>Etymology.</b> The species name, based on the Vietnamese word for stream or river and used as a noun in apposistion, was selected by biology students at Mississippi College in a “name the <i>Neoperla</i> contest”. The name was suggested by Brandon Webb. <b>Diagnosis.</b> The aedeagus and external genitalia of this species are somewhat similar to those of <i>N. tetrapoda</i> Zwick and other Bornean members of the <i>N. oculata</i> Banks complex as defined by Zwick (1986). It differs from these in having a wider and shorter process on tergum 7, a V&amp;hyphen; shaped notch on the mesal sclerite of tergum 8, and in lacking the extensive lobing of the aedeagal sac found among species of the <i>oculata</i> complex. The egg is similar in shape to that of <i>N. boornensis</i> (Enderlein) however the collar is shorter and wider and the chorionic detail differs (Zwick 1986).
description: Published as part of <i>Stark, Bill P. &amp; Sivec, Ignac, 2008, New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam, pp. 19-54 in Illiesia 4 (3)</i> on pages 36-37, DOI: 10.5281/zenodo.4758856
description: {"references": ["Zwick, P. 1986. The Bornean species of the stonefly genus Neoperla (Plecoptera: Perlidae). Aquatic Insects, 8: 1 - 53."]}