Nipponeurorthus fuscinervis (Nakahara, 1915)

Aspoeck, Ulrike, Aspoeck, Horst & Liu, Xingyue, 2017, The Nevrorthidae, mistaken at all times: phylogeny and review of present knowledge (Holometabola, Neuropterida, Neuroptera), Deutsche Entomologische Zeitschrift 64 (2), pp. 77-110 : 86-87

Nipponeurorthus fuscinervis (Nakahara, 1915) Figs 2c; 10 d–h; 16

Neurorthus fuscinervis Nakahara, 1915: 16 (odescr, figs: gs female).

Nipponeurorthus fuscinervis : Nakahara 1958 (charact, figs: wing, gs male, female); Hayashi 2005 (list, distr, figs); U. Aspöck and H. Aspöck 2008b (fig: distrmap); Liu et al. 2014 (key, fig: distrmap).

Type locality.

Japan (Kyoto: Mt. Atago).

Male.

Forewing length 8.9-9.3 mm, hindwing length 7.5-7.8 mm.

Head yellow. Antennae yellow. Mouthparts yellow; mandibles with brownish tips.

Thorax yellow. Legs yellow. Wings transparent, immaculate, with pterostigmatic areas yellow; longitudinal veins mostly yellow, except for those posterior to 2nd gradate crossveins brown; crossveins mostly brown, except for those on pterostigmatic areas yellow.

Abdomen yellow, dorsally much darker. Gonocoxite 9 robust on proximal half, with a small hairy tubercle on inner surface; distal half strongly incurved and sinuate, ventrally with two obtuse lobes, one directed outward and bald, the other directed inward and setose; gonostylus 9 acutely pointed but unforked. Ectoproct broad, directed posteroventrad, with posterior margin slightly concave. Complex of gonocoxites + gonostyli + gonapophyses 10 with lateral arms much longer than distal projections, straightly directed; distal projections digitiform, acutely pointed at tip, widely separated and parallelly directed with each other. Gonocoxites 11 present as a simple, transverse, sclerotized band; gonostyli 11 present as posteriorly bifurcated sclerite.

Female.

Forewing length 8.8 mm, hindwing length 7.6 mm.

Fused gonocoxites 8 about 2.0 times as long as tergite 8, flatly plate-like. Gonapophyses 8 subtrapezoidal, largely covered by gonocoxite 8, lateral margins distinctly sclerotized. Bursa copulatrix sac-like, nearly hexagonal in ventral view, slightly longer than tergite 8; distal portion internally with an ovoid sclerotized area, terminally curved dorsad in lateral view.

Specimens examined and records published.

Supplementary material 1. Syntypes: "Mt. Atago near Kyoto on July 2, ’14” [A lectotype should be designated, however, the syntypes are currently unavailable and possibly even lost].

Biology and ecology.

Adults have been taken from July–August. The known vertical distribution is 235-1000 m.

Distribution.

Japan (Hokkaido, Honshu).