Chonidris, Perrichot & Wang & Barden, 2020

Perrichot, Vincent, Wang, Bo & Barden, Phillip, 2020, New remarkable hell ants (Formicidae: Haidomyrmecinae stat. nov.) from mid-Cretaceous amber of northern Myanmar, Cretaceous Research 109, pp. 1-18 : 7

Genus Chonidris gen. nov.

urn:lsid:zoobank.org:act:664B304Ce41C9e4F39-9561- 2B055E815C3B.

Type species: Chonidris insolita gen. et sp. nov.

Etymology. The generic name is a combination of choní (Greek, meaning ‘funnel’) and idris (Greek, meaning ‘ant’), in reference to the shape of the clypeus. The name is feminine.

Diagnosis (gyne). Highly similar to Dhagnathos , but smaller (body length ca. 9 mm), with clypeus triangulate and expanded posteriorly into rounded horn, lateral margins of clypeus raised into serrated carina; propodeum with posterodorsal ridge; ventral margin of petiole with pointed spicule-like process and lamella; gastral segments I and II (abdominal segments III and IV) with conspicuous constriction. Separable from Dhagnathos with clypeal horn, apical portion of mandibles, and flagellomeres distinctly more compact; with inner margin of mandible projecting medioventrally into a large triangular blade that is gradually tapering to the tip of mandible; this blade with ventral corner rounded and dorsomedial margin serrate; in frontal view, when mandibles closed, ventral corners of blades slightly overlapping and medial margins almost parallel, nearly touching, so that labrum and clypeal area ventral to horn are entirely concealed, and mandibles are encased in clypeal triangle.