Neurostigma valderramae, González-Obando & Carrejo-Gironza & Mendivil-Nieto & Aldrete, 2021

González-Obando, Ranulfo, Carrejo-Gironza, Nancy, Mendivil-Nieto, Julián & Aldrete, Alfonso Neri García, 2021, Neurostigma (Psocodea: Psocomorpha: Epipsocidae) from Colombia: new species and an identification key, Acta Entomologica Musei Nationalis Pragae 61 (1), pp. 83-98 : 92

Neurostigma valderramae sp. nov.

( Figs 25–30 )

Type material. Hඈඅඈඍඒඉൾ: J, COLOMBIA: Huila, La Plata, Meremberg, 2°13′7.0″N, 76°7′0.9″W, 2118 m, 21.i.2015, R. González, O. Saenz & N. Calderón leg. (MUSENUV, slide no. 29876).

Description. Measurements (male holotype, in μm). FW: 4700, HW: 3325, F: 875, T: 1650, t1: 600, t2: 200, ctt1: 17, f1: 650, f2: 450, f3: 400, f4: 400, Mx4: 260, IO: 550, D: 230, d: 200, IO/d: 2.75, PO: 0.87, H/MxW: 1.36, H/D: 4.00, IO/MxW: 0.73, FW/W: 2.39, lp/wp: 2.45, al/ah: 1.13, HW/w: 2.92.

Color. Body dark brown, with pale spots. Head ( Fig. 27 ) with dark brown spots around compound eyes; vertex, frons, postclypeus, genae and postgenae light brown; compound eyes black, with pale transverse bands; ocelli hyaline, ocellar triangle creamy; anteclypeus and labrum light brown; labral sclerites brown. Antennae pale brown. Maxillary palps brown to creamy. Tergal lobes of meso- and metathorax dark brown; thoracic pleura brown. Legs: coxae brown; trochanters creamy to brown; femora creamy, darker basally, with oval spots; tibiae creamy, with blackish lateral contours; tarsomeres 1 creamy; tarsomeres 2 pale brown. Forewing membrane ( Fig. 25 ) hyaline, with pale brown spot extending from CuA to R 1; cell cua with pale brown spot in middle; pterostigma crossveins dark brown; veins brown, Rs, M and areola postica darker; nodulus dark brown. Hindwings hyaline; veins brown. Abdomen brown, tergum dark brown. Clunium dark brown. Hypandrium brown, posterior border darker. Phallosome dark brown. Epiproct and paraprocts dark brown.

Morphology. Head with abundant macrosetae, mainly on vertex ( Fig. 27 ); compound eyes small, vertex convex, bilobed, above upper border of compound eyes. Outer cusp of lacinial tips broad, with 7–8 denticles. Labrum with five distal sensilla: central placoid one, flanked by pair of trichoid–placoid sensilla. Forewings ( Fig. 25 ): pterostigma elongate, wider distally, with seven crossveins; R 2+3 sinuous; R 4+5 about five times as long as Rs section proximal to r–m; M with three branches; M 3 forked, strongly concave distal to r–m; areola postica high, almost as long as wide, angled apically, separated from CuA

2

by about 0.25× its own length. Hindwings elongate ( Fig. 26 ): M simple, unbranched; Rs+M shorter than Rs section proximal to r–m; Cu angled in middle. Legs: hind coxae with rasp as long as tympanum; trochanters with two long setae dorsally; fore and mid-tarsi without ctenidobotria; hindtarsi with ctenidobotria. Hypandrium membranous ( Fig. 29 ), with abundant setae, posterior margin rounded and more sclerotized. Phallosome ( Fig. 30 ) open basally; side struts short, straight; posterior process elongate, narrow and almost truncate apically; external parameres absent; endophallus membranous. Paraprocts ( Fig. 28 ) oval, short, posterior border rounded, with long and short setae; sensory fields with 33–34 trichobothria on basal rosettes. Epiproct wide anteriorly, posterior border rounded, setal field as illustrated in Fig. 28 . Female unknown.

Diagnosis. Neurostigma valderramae sp. nov. is similar to N. mockfordi sp. nov. in the absence of endophallic sclerites and the forewing vein R 2+3 being longer than four times the length of Rs section distal to r–m. It differs from the latter in the following characters: posterior process of aedeagus long, narrow and distally truncate ( Fig. 30 ); pterostigma with 7 crossveins; apex of areola postica angled ( Fig. 25 ).

Etymology. This species is dedicated to Graciela Valderrama de Díaz, enthusiastic and dedicated professor (retired) of Animal Genetics, Biology Department, Universidad del Valle, Santiago de Cali, Colombia.

Distribution. Colombia (Huila).

Figures

Figs 25–30. Neurostigma valderramae sp. nov., male. 25 – forewing; 26 – hindwing; 27 – head, frontal view; 28 – left paraproct and epiproct; 29 – hypandrium; 30 – phallosome. Values for scale bars in mm.