Ectomomyrmex annamitus

Distribution based on Regional Taxon Lists
Indo-Australian Region: Philippines. Oriental Region: India, Myanmar, Vietnam. Palaearctic Region: China.

Nomenclature

 *  annamitus. Ponera annamita André, 1892a: 48 (w.q.m.) VIETNAM. Combination in Bothroponera: Dalla Torre, 1893: 35; in Ectomomyrmex: Forel, 1900d: 322; Bingham, 1903: 87; in Pachycondyla (Ectomomyrmex): Emery, 1901a: 46; in Bothroponera: Joma & Mackay, 2013: 2; in Ectomomyrmex: Schmidt & Shattuck, 2014: 193. Current subspecies: nominal plus arcuatus.

Description
Worker

Bingham (1903): Black; the mandibles, antennas, femora, tibiae and tarsi of the legs and apex of the abdomen castaneous red. Head, thorax and abdomen with fairly abundant erect pale red hairs, covered by a minute sericeous pubescence, only visible in certain lights and in no way obscuring the sculpture. Head proportionately more elongate than in E. javanus, posteriorly less deeply emarginate, very densely and somewhat coarsely reticulate- punctate, the occiput smooth and shining; mandibles longer, with the masticatory region not so broad, armed with 7 teeth. Thorax nearly as broad anteriorly as the head, densely and somewhat more finely reticulate-punctate, coarsely rugose towards the apex of the basal portion of the metanotum; legs proportionately shorter, somewhat stouter. Node of the pedicel very thick, coarsely rugose above, and with coarse concentric striae on its posterior face, which is slightly concave; abdomen slightly shining, finely and closely punctured, but not granulate as the head and thorax are.

Length: 3-6 mm

Queen

Bingham (1903): "Head truncate posteriorly and on the posterior halt: of its sides. Back of the thorax depressed, the pronotum forming nearly one-third of its entire length. Node of the pedicel as in the worker. The apical sloping portion of the metanotum with beautiful arched striae, concave above, strongly marked and regular. Posterior face of the node of pedicel striated in the same way, but the striae convex above. The circumference of the node of pedicel transversely ridged; its anterior face strongly striate, the striae arched and convex above as on the posterior face. Head and thorax and the anterior three-fourths of the basal abdominal segment densely reticulate-punctate, opaque. Wings lightly shaded with brown, the nervures and stigma brown. Pilosity and pubescence short and reddish, moderate, somewhat abundant on the abdomen. The rest as in the worker. Black, with the antennae, mandibles, legs and apex of the abdomen reddish." (Forel.)

Length: 6.3 mm

References based on Global Ant Biodiversity Informatics

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