Osmylopsychopidae

Khramov, Alexander V. & Makarkin, Vladimir N., 2015, New fossil Osmylopsychopidae (Neuroptera) from the Early / Middle Jurassic of Kyrgyzstan, Central Asia, Zootaxa 4059 (1), pp. 115-132 : 128

Osmylopsychopidae gen. et sp. indet.

Fig. 10

Description. Hind wing ca. 19 mm long as preserved (estimated complete length ca. 20–21 mm), ca. 8.6 mm wide (measured perpendicular to R1). Costal space relatively broad; all preserved subcostal veinlets rather long, strongly inclined towards apex, once forked. Sc, R1 fused distally. Subcostal space poorly preserved, proximally moderately broad; crossveins not detected. Space between R1, Rs narrowed towards apex; crossveins relatively numerous (six detected in middle part of space). Rs with 24 almost parallel branches; two distal branches deeply forked (before inner gradate series), other branches rather regularly forked distad outer gradate series. Distal nygma not detected, but probably present posterior to strong rounded curvature of Rs1 (in proximal part). MA not deeply forked, dichotomously branched proximad outer gradate series. MP forked slightly distad primary fork of A1. MP1, MP2 similarly dichotomously branched at outer gradate series. 1m-cu (‘M5’) rather long, oblique. Cu dividing into CuA, CuP near wing base. CuA somewhat incurved, concave, pectinate, with nine rather long branches, all but one once or twice forked. CuP long, dichotomously branched distally. A1 dichotomously branched. A2 pectinate, with at least five branches (incompletely preserved). A3 not preserved. Trichosors rather indistinct. Crossveins quite numerous: outer gradate series in radial to mediocubital spaces rather well preserved, other crossveins proximad outer gradate series more or less irregularly spaced; few crossveins posterior to CuA (only two detected).

Material. Specimen PIN 1724 / 323 (part only), a nearly complete, rather well-preserved hind wing, housed in PIN.

Locality and horizon. Kyrgyzstan: Sai-Sagul; late Early Jurassic to the early Middle Jurassic.

Remarks. This hind wing is distinguished from the previous hind wing (i.e., Osmylopsystoechus sp.) by markedly different wing shape (resulting mainly from its shorter relative hind wing margin), MA is simple (deeply forked in O. sogulensis sp. nov.), and more numerous crossveins. Theoretically, it might belong to some species of the osmylopsychopid genera Osmylopsychoides gen. nov. or Psychostoechotes gen. nov., or even to some Polystoechotidae . However, the latter assumption appears less probable, as definite polystoechotids are not recorded from Sai-Sagul.

Figures

FIGURE 10. Osmylopsychopidae gen. et sp. indet. Specimen PIN 1724 / 323. A, specimen as preserved. B, hind wing venation. Scale bars = 5 mm.