Neurostigma newi, 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 : 88

Neurostigma newi sp. nov.

( Figs 13–18 )

Type material. Hඈඅඈඍඒඉൾ: J, COLOMBIA: Valle del Cauca, Dagua, Km 30, parcelación Plenitud, 3°34′19.8″N, 76°39′46.5″W, 1344 m, 29.iv. –1.v.2011, J.A. Mendivil leg. (MUSENUV, slide no. 29873). Pൺඋൺඍඒඉൾ: COLOMBIA: 1 J, Magdalena, National Natural Park Tayrona, 11°19′N, 73°59′W, 600 m ( IAVH, slide no. 3429).

Description. Measurements (male holotype, in μm). FW: 3200, HW: 2425, F: 700, T: 1150, t1: 510, t2: 150, ctt1: 20, f1: 400, f2: 300, f3: 260, f4: 270, Mx4: 180, IO: 440, D: 220, d: 180, IO/d: 2.44, PO: 0.82, H/MxW: 1.33, H/D: 3.51; IO/MxW: 0.77, Mx4/Mx2: 1.43, FW/W: 2.45, lp/wp: 2.85, al/ah: 1.85, HW/w: 2.91.

Color. Body creamy, with brown spots. Head ( Fig. 15 ) with light brown band from inner margin of each compound eye to ocellar triangle and pale brown band around compound eyes; vertex, frons, postclypeus, anteclypeus and labrum creamy; labral sclerites pale brown; genae light brown; postgenae pale brown; compound eyes blackish; ocelli hyaline, with pale brown centripetal crescents. Antennae pale brown. Maxillary palps: segments 1–3 pale brown; segment 4 brown, apex darker. Tergal lobes of mesothorax creamy, posterior edge brown; tergal lobes of metathorax brown, creamy distally; thoracic pleura creamy. Legs: coxae and trochanters creamy, with blackish spot apically; femora creamy, with blackish spots; tibiae creamy; tarsi pale brown. Forewing membrane hyaline ( Fig. 13 ); pterostigma crossveins brown; Rs, M and areola postica dark brown, other veins pale brown; nodulus blackish. Hindwing membrane hyaline, light brown basally; veins brown. Abdomen: tergum with blackish band, sternum creamy. Clunium light brown, anterior edge darker. Hypandrium light brown. Phallosome dark brown, radula with one group of sclerites on each side of longitudinal midline, on spinose matrix, each group with long, sclerotized black teeth. Epiproct and paraprocts light brown.

Morphology. Head with abundant macrosetae, mainly on vertex ( Fig. 15 ). Vertex convex, bilobed, clearly above upper border of compound eyes. Outer cusp of lacinial tips broad, with five denticles. Labrum with five distal sensilla: central placoid one, flanked by pair of trichoid–placoid sensilla. Forewings ( Fig. 13 ): pterostigma triangular, wider in middle, with four crossveins, third or fourth crossvein forked; R 2+3 sinuous, R 4+5 approximately three times the length of Rs section proximal to transverse r–m; M with three branches, strongly concave distal to r–m; areola postica high, rounded apically, slanted posteriorly, separated from CuA 2 by about 0.3× its own length. Hindwings elongate ( Fig. 14 ): M simple, unbranched; Rs+M longer than Rs section proximal to transverse r–m; Cu angled in middle; Rs and M fused at a distance. Legs: hind coxae with rasp slightly smaller than tympanum; trochanters with elongate setae dorsally; fore and mid-tarsi without ctenidobotria; hind tarsi with ctenidobotria. Hypandrium triangular, membranous ( Fig. 17 ), with abundant setae. Phallosome ( Fig. 18 ) open basally; side struts straight, somewhat wide basally and gently curved outwards; aedeagal arch robust, posterior process wide, short and rounded apically; external parameres absent; radula with two sclerites with numerous pointed teeth, immersed in spinose matrix. Paraprocts ( Fig. 16 ) oval, short, with abundant setae distally, sensory fields large, with 32–36 trichobothria on basal rosettes. Epiproct broad basally, posterior margin rounded, with one macroseta mesally, other setae as illustrated in Fig. 16 . Female unknown.

Diagnosis. Neurostigma newi sp. nov. is close to N. garcialdretei and N. radiatum in R 4+5 /Rs length ratio, and the presence of spines in the radular sclerites. It differs from both species in the shape and length of the pterostigma and the posterior process of the aedeagus which is short, broad and rounded distally.

Etymology. This species is dedicated to Dr. Timothy Richard New, from La Trobe University, Victoria, Australia, in recognition of his studies on SouthAmerican Psocoptera and insect conservation.

Distribution. Colombia (Magdalena and Valle del Cauca).

Figures

Figs 13–18. Neurostigma newi sp. nov., male. 13 – forewing; 14 – hindwing; 15 – head, frontal view; 16 – left paraproct and epiproct; 17 – hypandrium; 18 – phallosome. Values for scale bars in mm.