Eurhopalothrix dubia

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

Nomenclature

 *  dubia. Eurhopalothrix dubia Taylor, 1990b: 409, figs. 13-15, 47 (w.q.) BORNEO.

Worker
General features as illustrated. All Class A attributes present, with those of Class B, unless otherwise indicated. Dimensions (holotype, mm): HL 0.69; HW 0.74; CI 107; ML 0.17; MI 25; SL 0.40; SI 54; PW 0.44; WL 0.78. The smallest (Umas Umas) and largest (Lungmanis) paratypes have HW 0.73 and 0.85 mm respectively. Occipital border almost straight, transverse [its outline at most minutely curved (usually concave) or sinuate]. Petiolar node in dorsal view essentially square, with its length and breadth subequal, to distinctly but moderately wider than long.

Frons and clypeus almost entirely, and other dorsal body surfaces extensively, covered by a ground pilosity of dense, flattened, thoroughly appressed, squamous, shining silvery hairs, which are almost contiguous and fill or overlap the punctures bearing them. These hairs with feathered margins under SEM examination. Specialised erect hairs also present, well differentiated from those of the ground pilosity. Each clavate, barely expanded, though relatively thick and columnar; distributed (when complement is complete) as follows: 6 on frons: 2 pairs grouped posteromedially at the occipital border in a tight square array (the hairs spaced by about their average length); the other 2 hairs each midway between this group and the ipsilateral eye. Such hairs lacking on promesonotum and petiolar node, and on dorsum of first gastral tergite; one pair (posterolateral) on postpetiole. Ground pilosity of scapes and legs dense, generally less specialised than on body, though squamous hairs are present on the antennal scapes and humeral knees.