Epigambriinae, Handlirsch, 1939

Makarkin, Vladimir N., Ansorge, Jörg & Khramov, Alexander V., 2021, Revision of Epigambriinae Handlirsch, stat. nov., a subfamily of Early Jurassic Ithonidae s. l. (Neuroptera), Palaeoentomology 4 (6), pp. 516-531 : 524-525

Epigambriinae gen. et sp. indet.

( Fig. 8 )

Material. PIN 5552/48, deposited in PIN. An incomplete crumpled hind wing.

Locality and horizon. Germany: Schandelah. Early Jurassic (early Toarcian, boreale nodule, Harpoceras falciferum ammonite zone).

Description. Hind wing 5.8 mmlong as preserved (estimated completelength ca. 6.2–6.5 mm), 2.3 mmwide aspreserved(estimated completelength ca. 2.5).Preserved portion of costal space relatively broad; broadened distally. Subcostal veinlets mainly oblique; simple or once shallowly forked medially; once to twice forked distally. Subcostal space rather narrow as preserved. Sc, RA stout. RA space narrow, with three preserved crossveins nearly perpendicular to RA (distal slightly oblique). RP with seven branches. RP1–RP3 deeply dichotomously forked; other branches shallowly forked or their terminations not preserved. MA, MP dichotomously forked. CuA pectinate with at least five branches. CuP not completely preserved, probably few branched. Presumed A1, A2 each shallowly forked once (alternatively, A1 dichotomously forked, A2 not preserved). One distal crossvein between presumed A1, A2.

Remarks. The venation of this hind wing is very similar to that of Epigambria longipennis and is clearly distinguished from that of Polyosmylus excelsus by its dichotomously branched M. Judging from its size, this wing might also belong to Rasnitsyneura gen. nov.

Figures

FIGURE 8. Epigambriinae gen. et sp. indet., PIN 5552/48. A, Photograph. B, Hind wing venation. Scale bar = 1 mm (both to same scale).