Liomenochilus Hutchinson & Allsopp, new genus

urn:lsid:zoobank.org:act: B9A9637E-24BF-4E75-BCC7-40C59E425A49

Type species. Liomenochilus ongi Hutchinson & Allsopp, new species .

Generic diagnosis (Figs. 1–6, 8–9). Male. Small (11.5–11.6 mm long), elongate body, length:width ratio 2.25:1. Labrum with anterior margin reflexed, medium length, length:width ratio male 0.34:1. Labro-clypeal suture effaced dorsally, present only at lateral declivity (Figs. 4–5). Lateral margins of clypeus not constricted at the base and sinuate near each canthus. Antennae with 8 antennomeres, club with 3 long lamellae (Figs. 1–5), faces of all lamellae glabrous. Disc of pronotum glabrous. Metafemora dilated, length:width ratio 1.65:1. Posterior portion of epipleurae spinose.

Female unknown.

Differentiation. The following combination of characters distinguishes Liomenochilus from other genera within the Systellopini: elongate body, length:width ratio 2.25:1; labro-clypeal suture effaced dorsally; antennae with 8 antennomeres, club 3-lamellate, glabrous; pronotum with posterior margin evenly convex and continuous to midlength rendering posterolateral angles obsolete.

The key to tribes presented by Britton (1990) allows Liomenochilus to key out to Systellopini . The key to tribes of Weir et al. (2019) requires a change at couplet 6 (sensu couplet 5 of Britton 1990) to reflect the labro-clypeal suture effaced dorsally and present only at the lateral declivity.

Etymology. The name refers to the labro-clypeal suture being effaced dorsally and is derived from the Greek λιωμένο, fused, and χείλος, lip. It is to be treated as masculine.