3.1. Subfamily † Megazarinae Perrichot, 2009 stat. nov.

Type genus.

† Megazar Perrichot, 2009.

Diagnosis.

Head hypognathous, globular; compound eye oval, not covering head length, without postocular carina; flagellomeres cylindrical, longer than wide; subantennal groove without dorsal carina; mandibles symmetrical, with three or four teeth. Posterolateral margin of pronotum with notch accommodating anterior thoracic spiracle, not surrounding spiracle posteriorly; mesoscutum large, around half length of mesosoma, parapsidal lines present; median mesoscutal sulcus and axillar grooves present, deeply crenulate or smooth. Metasoma elongate. Fore wing hyaline; C, Sc+R, M+Cu, A, Rs+M, cu-a, Cu, Rs and R1 pigmented; costal, radial, first cubital, submarginal, and marginal cells closed by tubular veins. Hind leg stout, metafemur and metatibia swollen; at least either inner margin of metatrochanter, metacoxa, metatibia, or metabasitarsus bearing row of comb-like, thick setae along ventral surface.

Genera included.

† Cretolyra gen. nov., † Genkyhag gen. nov., † Megacoxa gen. nov., † Megalava Perrichot, 2009 [† Megalavini trib. nov.]; † Megazar Perrichot, 2009 [† Megazarini Perrichot, 2009].

Stratigraphic extension.

Albian to Cenomanian.

Comments.

The tribe Megazarini Perrichot, 2009 is here elevated to subfamily level, as † Megazarinae stat. nov. based on the results of our phylogenetic analyses. The monophyly of the subfamily is supported by three synapomorphies under parsimony: (1) metatibia and/or metatarsus with comb-like setae along ventral surface (31:1; Fig. 3A); (2) fore wing Rs+M located posteriorly, with the submarginal cell being at least twice the size of the medial cell (42:1; Fig. 3C); and (3) fore wing pterostigma absent or reduced (46:0; Fig. 3C). Within the subfamily, a new tribe is created to accommodate three of the newly described genera and † Megalava .