Myrmecina kaigong

Nothing is known about the biology of .

Identification
Terayama (2009) - This species resembles Myrmecina sauteri, from Taiwan and Myrmecina ryukyuensis, from the Ryukyu Islands, southwestern Japan. However, it is distingished from sauteri  by the straight anterior margin and obtusely angulate anterolateral corners of 1st gastral tergum (concave anterior margin and acutely angulate anterolateral margin in sauteri), and from ryukyuensis by the rather thick and straight, oblique rugae on head, and the smooth genal area (rugae on head thinner and much irregular, and longitudinal, and genal area microreticulate in ryukyuensis).

Distribution based on Regional Taxon Lists
Oriental Region: Taiwan.

Castes
Known only from the worker caste.

Nomenclature

 *  kaigong. Myrmecina kaigong Terayama, 2009: 188, figs. 252, 253 (w.) TAIWAN.

Worker
Holotype. HL 0.58, HW 0.55, SL 0.45, WL 0.68, PL 0.18, PH 0.20, DPW 0.16, PPL 0.15, PPH 0.20, PPW 0.23, TL 2.2.

Head rectangular, 1.05 times as long as wide, with weakly convex posterior margin and sides in full face view; posterolateral corner forming an obtuse angle; vertex with about 20 even oblique rugae; the rugae rather thick and straight; genal area smooth and shining. Anterior margin of clypeus almost straight, without median projection. Eye small, consist of 4 facets, and 0.03 mm long. Antennal scape short, SI = 82, not reaching posterior margin of head; basal portion parallel, not broaden.

Dorsum of alitrunk with about 12 longitudinal rugae; propodeal tooth triangular, tip directed to posterior portion. Petiole slightly higher than long, with straight anterior margin in profile; a dull angle present at midlength of dorsal margin; subpetiolar process present, bearing small anteroventral lobe. Postpetiole 1.3 times as long as high, with convex dorsal margin.

Gaster smooth and shining; anterolateral corner of 1st tergum forming an obtuse angle, and anterior marign straight in dorsal view.

Color. Head and alitrunk black; petiole, postpetiole, and gaster dark brown; mandible blackish brown; antenna and legs yellow.

Type Material
Holotype. Worker, Chihpenxi, Taitung Pref., 20. viii. 1980, M. Terayama leg. NIAES

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

References based on Global Ant Biodiversity Informatics

 * Guénard B., and R. R. Dunn. 2012. A checklist of the ants of China. Zootaxa 3558: 1-77.
 * Okido H. 2011. Biogeography of the ant genus Myrmecina from Asia (Hymenoptera; Formicidae). Kankyo Kanri 40: 60-64.
 * Terayama M. 2009. A synopsis of the family Formicidae of Taiwan (Insecta: Hymenoptera). Research Bulletin of Kanto Gakuen University. Liberal Arts 17:81-266.
 * Terayama Mamoru. 2009. A synopsis of the family Formicidae of Taiwan (Insecta, Hymenoptera). The Research Bulletin of Kanto Gakuen University 17: 81-266.
 * Terayama, M. 2009. A synopsis of the family Formicidae of Taiwan (Insecta; Hymenoptera). The Research Bulletin of Kanto Gakuen University 17: 81-266.