Fallomyrma

Identification
Radchenko & Dlussky (2018) - Workers monomorphic, body 2.5– 4 mm long. Antennae 12-segmented, with distinct large three-segmented club longer than remaining funicular segments taken together; antennal scape relatively short, slightly curved at base, not reaching occipital margin. Eyes well developed, located somewhat lower (anteriorly) than midlength of lateral head margins. Ocelli absent. Frontal lobes widely spaced, so that central part of clypeus wedging in between these lobes wider than each lobe. Median portion of clypeus longitudinally concave, delineated laterally by longitudinal carinae; anterior clypeal margin widely and weakly medially concave, with two long setae. Masticatory margin of mandibles with six or seven teeth. Promesonotum distinctly narrowing posteriorly, subtrapezoidal, delineated markedly anteriorly and laterally by sharp ridge; its anterior margin convex (in dorsal view); dorsal and lateral surfaces of promesonotum positioned at right or even acute angle. Petiole with distinct cylindrical anterior part; its node high, with rounded dorsum. Middle and hind tibiae with one simple spur. Whole body smooth, without punctation or granulated sculpture; rugosity sometimes developed on various parts of head and mesosoma.

Based on the complex of morphological characters listed above, Fallomyrma differs from all known fossil myrmicine genera from the Late Eocene European ambers. Fallomyrma species are superficially similar to the extant Neotropic genus Oxyepoecus in the shape of head, mesosoma, and petiole, but the antennae of workers of the latter genus are 11-segmented, the masticatory margin of the mandibles has only three teeth, and the frontal lobes are positioned closely, so that the central part of the clypeus, which wedges in between the frontal lobes is narrower than each lobe. We do not assume that these genera are related, most probably this similarity results from convergence.

Distribution
This taxon is known from, ,.

Nomenclature

 * † FALLOMYRMA [Myrmicinae]
 * †Fallomyrma Dlussky & Radchenko, 2006a: 154. Type-species: †Fallomyrma transversa, by original designation.