Ponera rishen

Nothing is known about the biology of .

Identification
Resembles to Ponera takaminei from the Ryukyus in Japan and Taiwan, but is separated from the latter by the straight posterior margin of petiolar node and the black body color.

Distribution based on Regional Taxon Lists
Oriental Region: Taiwan.

Nomenclature

 *  rishen. Ponera rishen Terayama, 2009: 111, figs. 49-51 (w.) TAIWAN.

Worker
Holotype. Head densely punctate, with straight posterior margin and convex sides in full face view. Antennal scape reaching posterior margin of head, SI = 75; club consist of 5 segments. Eye small.

Pro- and mesonota moderately punctate, posterolateral corner of propodeum forming an angle. Petiolar node large and wide, upper portion of posterior margin produced backward in profile; in dorsal view, dorsal disc 0.5 times as long as wide, with convex anterior margin and almost straight posterior margin. Subpetiolar process with strong posteroventral teeth.

Measurements (mm). HL 0.73, HW 0.60, SL 0.45, WL 0.95, PL 0.25, PH 0.53, DPW 0.45, TL 3.2.

Color. Body black, mandible and antenna brown, legs yellow.

Type Material
Holotype. Worker, Riyuetan, Nantou Pref., 28.vii.- 2.viii.1988.

Paratypes. 6 workers, same data as the holotype.

Type depository. The holotype is deposited in NIAES, and paratypes in NIAES, NSMT and TARl.

Leong et al. (2019): Type material examined: TAIWAN. Holotype, 1 worker, Riyuetan, Nantou Pref., 28 VII to 2 VIII 1988. Paratypes, 2 workers, Riyuetan, Nantou Pref., 28 VII to 2 VIII 1988, M Terayama leg (: LCM_MT-Ponera-24).

Etymology
The specific epithet is the Chinese noun Rishen, which is the name of a Taiwanese god.