Opamyrma Yamane, Bui et Eguchi, 2008

Chen, Zhi-Lin, Shi, Fu-Ming & Zhou, Shan-Yi, 2017, First Record Of The Monotypic Genus Opamyrma (Hymenoptera: Formicidae) From China, Far Eastern Entomologist 335, pp. 7-11 : 8

Genus Opamyrma Yamane, Bui et Eguchi, 2008

Opamyrma Yamane et al. 2008: 56 ; Ward & Fisher, 2016: 690.

Type species: Opamyrma hungvuong Yamane, Bui et Eguchi, 2008 , by original designation.

DIAGNOSIS OF WORKER. Head nearly rectangular, occipital margin slightly concave, preoccipital carina complete, anterolateral corner with spine or denticle. Mandibles slender. Posteriorly margin of clypeus with distinctly continuous carina. Outer face of labrum with at least two rows of peg-like denticles. Eye and Ocelli absent. Frontal lobe absent, antennal sockets completely uncovered. Antennae short, 12-segmented, scapes far less surpass occipital corner. Mesosoma elongate, promesonotal suture distinct and notched, metanotal groove disappeared. Metapleural gland bulla large and round. Propodeal lobe small, low and round. Mid- and hind tibiae with a reduced barbulate anterior spur and a well-developed pectinate posterior spur, Pretarsal claws simple, without teeth. Petiolar node elongate, narrowly attached to anterior face of the tergite of first gastral segment, without anterior peduncle, the sternite of petiole reduced to a small posteroventral sclerite. Gaster long, posterior portion laterally especially compressed. Sting long and strong.

DIAGNOSIS. This genus was originally described in the subfamily Amblyoponinae ( Yamane et al. 2008) but later transferred to subfamily Leptanillinae ( Ward & Fisher, 2016) . Opamyrma is easily distinguished from other genera of Leptanillinae by one-segmented nodiform waist. This genus is also easily separated from the genus Apomyrma of Amblyoponinae by the helcium is attached at mid-height on the anterior face of the first gastral segment.

NOTES. Here the genus Opamyrma is recorded from China for the first time.