Eurhopalothrix rothschildi

The single type, a worker, was collected from rainforest leaf litter berlesate.

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

Nomenclature

 *  rothschildi. Eurhopalothrix rothschildi Taylor, 1990b: 418, figs. 38-40, 54 (w.) BORNEO.

Worker
All Class A attributes present, with those of Class B, unless otherwise indicated. Dimensions (mm): HL 0.54; HW 0.59; CI 110; ML 0.10; MI 20; SL 0.32; SI 54; PW 0.35; WL 0.57. Outer mandibular borders in frontal view more-or-less continuously (weakly) convex. Face of clypeus between frontal lobes divided by an obtuse, very low, transversely arched ridge; anterior clypeal border relatively deeply emarginate. Frons spanned by a slightly arched, conspicuous, obtuse transverse tumosity or ridge between eyes. Eyes small but distinct, 5-faceted. Occipital border broadly, distinctly, but shallowly emarginate. Petiolar node in dorsal view distinctly wider than long. One pair of specialised erect hairs on frons (one only extant in the holotype), near midline of occipital border, and 6 in 2 longitudinal rows of 3, on dorsum of first gastral tergite; such hairs otherwise lacking on promesonotum, petiolar node, and postpetiole. The intact cephalic hair clavate, expanded to about ~ its height; the erect gastral hairs somewhat longer, with almost bulbous tips surmounting slender columnar stems. Ground pilosity moderately well developed, more concentrated on frontal lobes, promesonotal dorsum and postpetiole than elsewhere; a ragged linear band of hairs crosses the frons between the eyes, along the trans ocular ridge (somewhat encrusted and obscured in the holotype).

Type Material
Malaysia: Sarawak: First Division: Mt Santubong (05°52'N., 118°55'E.), near Kuching. Known only from the unique worker holotype, from a rainforest leaf litter berlesate, at c. 1800 ft (G. H. L. Rothschild), 5.vi.1968; RWT acc 68.294). Holotype in (type No. 7782); gold-palladium coated for SEM study.

Etymology
Named for my friend and colleague George Rothschild, formerly Sarawak Government Entomologist.

References based on Global Ant Biodiversity Informatics

 * Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
 * Taylor R. W. 1990. New Asian ants of the tribe Basicerotini, with an on-line computer interactive key to the twenty-six known Indo-Australian species (Hymenoptera: Formicidae: Myrmicinae). Invertebrate Taxonomy 4: 397-425.