Atherhagiox, Grimaldi, 2016

Grimaldi, David A., 2016, Diverse Orthorrhaphan Flies (Insecta: Diptera: Brachycera) In Amber From The Cretaceous Of Myanmar: Brachycera In Cretaceous Amber, Part Vii David A. Grimaldi, Bulletin of the American Museum of Natural History 2016 (408), pp. 1-132 : 35-36

Atherhagiox , new genus

DIAGNOSIS: Differs from living and extinct athericids by having base of fork of R 4+5 significantly proximal to level of apex of cell d (i.e., cell d is quite long). Further, veins M 1 and M 2 sinuous as in Galloatherix ; like this genus and Sinocretomyia and Palaepangonius , R 2+3 also sinuous, but its apex not in contact with apex of R 1. Atherhagiox further differs from Sinocretomyia by the reniform (vs. ovoid) basal flagellomere.

TYPE SPECIES: Atherhagiox ambiguum , new species.

ETYMOLOGY: The generic name is a combination of the two names of type genera of Athericidae and Rhagionidae — Atherix and Rhagio —and refers to the hybrid set of characters of the new genus. The gender of the name is neuter.

COMMENTS: Atherhagiox have similarities with certain Rhagionidae , and the boundaries between this family and Athericidae have historically been vague. Like the rhagionid genus Symphoromyia , the new genus has a reniform basal flagellomere with an aristalike terminal section of the flagellum and a sinuous R 2+3; both genera also have 0-2-1 tibial spurs. Other similarities are plesiomorphic: a vein R 2+3 that does not converge with or approximate the apex of R 1; suprametacoxal pit (found in all athericids except Dasyomma ) is lacking; cerci 2-segmented, and female terminalia telescoping. However, like athericids and unlike rhagionids, Atherhagiox have a deeply excised, lappetlike basicosta and arched palps. Mandibles are present in the female (these are absent in most Rhagionidae with the exception of Symphoromyia ).