Myrmecina mahuana

Nothing is known about the biology of .

Identification
Okido, Ogata, and Hosoishi (2020) - A member of the Myrmecina spinosa complex. M. mahuana can be distinguished within the complex by having a posteriorly directed propodeal-spine and a simple anterior margin of the first gastral tergum.

Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia, Malaysia.

Nomenclature

 * . Myrmecina mahuana Okido, Ogata & Hosoishsi, 2020: 68, fig. 31 (w.) MALAYSIA.

Worker
Holotype. TL 3.73, HL 0.96, HW 0.94, CI 98, SL 0.93, SI 98, PW 0.61, ML 1.02.

Head convex on lateral margin; occipital margin strongly concave in full-face view; occipital corners projected posteriorly. Masticatory margin of mandible bent at midlength (third small tooth or sixth tooth); apical tooth strong, third tooth weakly developed, followed by 5 small teeth and a stout basal tooth bearing blunt apex; small teeth frequently unclear. Dorsal surface of clypeus not concave; median portion of anterior margin weakly projected with a median process bearing two tops; lateral portion simple, lacking sharp ridge in front of antennal insertions. Anterior dorsal surface of labrum with paired small denticles, close to each other. Frontal carinae present, running back to or beyond the level of the posterior margin of the eyes, but very obscure, difficult to distinguish from rugae on dorsum of head. Eyes large and convex with maximum diameter 0.18 mm, with 11 ommatidia; malar space twice as long as diameter of eye or shorter in profile. Antennal scape long, extending beyond posterolateral corner of head; antennal flange developed.

Dorsal outline of mesosoma convex in profile. Pronotum without denticles on dorsolateral portion; anterior ventrolateral portion with small denticle. Eumetanotal spine present but small and unclear. Propodeal spine triangular, directing upward and backward, just reaching vertical posteriormost limit of propodeum in profile. Propodeal lobe low. Propodeal spiracle small, situated near base of propodeal spine, between posterior margin of spiracle and posterior margin of propodeum much longer than diameter of spiracle. Petiole longer than high in profile; dorsal crest absent; subpetiolar process absent. Postpetiole slightly broader than petiole in dorsal view; lateral margin straight; dorsal outline slightly convex or flattened in profile; ventral outline not projected.

Anterior margin of gaster not concave in dorsal view.

Head with wavy rugae distinctly; ventrolateral portion with 2-3 rugae longitudinally. Mandibles smooth and shining. Clypeus smooth and shining. Mesosoma with irregular rugae. Petiole and postpetiole with longitudinal rugae. Head and mesosoma with long pilosity on dorsum, hairs of pronotum longer than apical second segment of antenna. Pilosity of petiole and postpetiole as long as that of mesosoma. Postpetiole with paired hairs on ventral surface. Head, mesosoma, petiole and postpetiole dark reddish brown, mandible yellowish brown, gaster black.

Type Material
Holotype worker, MALAYSIA: Mahua Waterfall area, ca. 1000 m alt., Crocker Range N. P., Sabah (H. Okido).