Technomyrmex certus

The type material was collected from a fogging sample in a mixed dipterocarp forest.

Identification
Bolton (2007) - A member of the T. pallipes complex in the Technomyrmex albipes group. A small-eyed, uniformly darkly coloured arboreal species that superficially resembles the much commoner Technomyrmex albipes but is strikingly more densely setose on the head.

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

Nomenclature

 *  certus. Technomyrmex certus Bolton, 2007a: 76, fig. 49 (w.) BORNEO.

Worker
TL 2.1, HL 0.54, HW 0.51, SL 0.52, PW 0.32, WL 0.68. Indices: CI 94, SI 102, OI 23, EPI 70, DTI 137.

Frontal carina with 3 setae: in e the posteriormost of these at the level of the anterior margin of the eye. Dorsum of head behind this with 3 pairs of short setae and the posterior margin with a transverse row of 6 - 8 setae across its width. All dorsal setae on the head are shorter than the maximum diameter of the eye. With head in full-face view the anterior clypeal margin with a small shallow median impression; sides of head shallowly convex and the posterior margin with a slight median Impression. Eyes small, located in front of midlength and their outer margins just fail to touch the outline of the sides of the head in full-face view. With mesosoma in profile the mesonotal outline evenly shallowly convex. Number of setal pairs on dorsal mesosoma: pronotum 4; mesonotum 3; propodeal dorsum 0; lateral margin of propodeal declivity 2; all setae shorter than maximum diameter of eye. Propodeum in profile with the dorsum flat, meeting the declivity in an angle. Straight-line length of propodeal dorsum in profile is much less than depth of declivity to the spiracle. Gastral tergites 1 - 4 each with numerous setae, distributed everywhere on the sclerites; maximum length of setae on first gastral tergite less than the maximum diameter of the eye. Head/ mesosoma, petiole and gaster black. Middle and hind coxae, femora and tibiae blackish brown to black; basitarsi infuscated, slightly lighter than tibiae but not distinctly much paler.

Type Material
Holotype worker, Brunei: K. Belalong, E 1150 7', N4° 34', viii.1991, mixed dipt. for., Dryobalanops beccarri, site 2, fog 10, 300 m. alt. (N. Mawdsley).

References based on Global Ant Biodiversity Informatics

 * Bolton B. 2007. Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste. Contributions of the American Entomological Institute 35(1): 1-150.
 * Bolton, B. "Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste." Contributions of the American Entomological Institute 35, no. 1 (2007): 1-149.
 * CSIRO Collection
 * 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