Myrmecina parallela

Nothing is known about the biology of .

Identification
Okido, Ogata, and Hosoishi (2020) - Similar to Myrmecina boltoni, Myrmecina longiseta and Myrmecina monticola (see the M. boltoni identification section for details) but distinguished by an anterior clypeal margin without a median paired processes and long propodeal spine.

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

Nomenclature

 * . Myrmecina parallela Okido, Ogata & Hosoishsi, 2020: 82, fig. 38 (w.) INDONESIA.

Worker
Holotype worker. TL 2.98, HL 0.70, HW 0.65, CI 92, SL 0.55, SI 85, PW 0.46, ML 0.78. Paratype workers. TL 2.82-3.09, HL 0.67-0.72, HW 0.62-0.70, CI 92-97, SL 0.54-0.61, SI 84-95, PW 0.45-0.50, ML 0.74-0.83 (7 measured).

Head subrectangular, slightly longer than broad in full-face view; median portion of occipital margin much concave; occipital corners rounded, not projected posteriorly. Masticatory margin of mandible bent at midlength (third small tooth or sixth tooth); apical tooth strong, third tooth robust, followed by 5 small teeth and a blunt basal tooth. Dorsal surface of clypeus not concave; median portion of anterior margin slightly projected, usually without a median process but sometimes present; lateral portion simple, lacking sharp ridge in front of antennal insertions. Anterior dorsal surface of labrum with paired small denticles distinctly, close to each other. Frontal carinae virtually absent, indistinguishable from rugae on dorsum of head. Eyes very small circularly and convex, varying in size with maximum diameter 0.06-0.08 mm and 12-14 ommatidia; malar space twice as long as diameter of eye in profile; distance between occipital margin and posterior margin of eye five times as long as diameter of eye or longer. Antennal scape long, extending beyond posterolateral corner of head; antennal flange fully developed.

Dorsal outline of mesosoma convex in profile. Pronotum without denticles on dorsolateral portion; anterior portion marginate posteriorly in dorsal view; anterior ventrolateral portion projected. Furrow between pronotum and mesoepisternal projection broad. Eumetanotal spine present. Propodeal spine elongate, much longer than broad at base, extending over vertical posteriormost limit of propodeum in profile. Propodeal lobe low. Propodeal spiracle large, situated near base of propodeal spine, apart from margin by its diameter. Petiole long, longer than high in profile, and longer than broad in dorsal view; dorsal crest located at midlength in profile; subpetiolar process and median longitudinal ridge at ventral portion absent. Postpetiole slightly broader than petiole in dorsal view; dorsal outline flattened or slightly convex in profile; ventral outline slightly projected rectangularly with acute anterior apex.

Anterior margin of gaster not concave in dorsal view.

Head with parallel rugae which are thin and longitudinal; ventrolateral portion variable sculptured, with longitudinal rugae or smooth and shining. Clypeus smooth and shining. Mesosoma usually with straight rugae longitudinally, sometimes with transverse rugae at pronotum. Forecoxa smooth and shining. Petiole and postpetiole with irregular rugae. First gastral segment smooth and shining. Head with dense and short pilosity on dorsum. Mesosoma with dense and short pilosity on dorsum, hairs of pronotum shorter than propodeal spine. Petiole with or without 2 hairs on ventral surface. Postpetiole with 4-6 hairs on ventral surface. Head, mesosoma, petiole and postpetiole black, forecoxae and gaster dark reddish brown, mandibles, antennae and legs yellowish brown.

Type Material
Holotype worker, INDONESIA: Sumatra, Padang (no collector’s name). Paratypes. 9 workers with same data as holotype (BMNH).