Strumigenys pharosa

Known from two collections, the non-type was collected in rainforest.

Identification
Bolton (2000) - A member of the Strumigenys eurycera-group. The holotype was found in the TM collection of Biro material, confused with series of Strumigenys mocsaryi. Like Strumigenys eurycera, pharosa lacks pronotal humeral hairs, but unlike that species does not have a massively expanded lobe on the leading edge of the scape. Other species of the group (Strumigenys quattuor, Strumigenys tetra) have a distinct pronotal humeral hair.

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

Nomenclature

 *  pharosa. Strumigenys pharosa Bolton, 2000: 780 (w.) NEW GUINEA.

Worker
Holotype. TL 2.2, HL 0.58, HW 0.47, CI 81, ML 0.24, MI 41, SL 0.30, SI 64, PW 0.28, AL 0.62. The slender preapical tooth is sub tended by a very narrow translucent cuticular lamella, the height of which is distinctly less than one-third the length of the preapical tooth; lamella commences close to base of preapical tooth and peters out proximally before reaching the anterior clypeal margin. Dorsolateral margin of head without freely laterally projecting hairs though 1-2 very short stubbly hairs may be present close to apex of scrobe. Scape relatively slender, about 5 times longer than maximum width and with leading edge shallowly convex. All hairs on leading edge of scape directed toward apex of scape. Apical segment of antenna spindle-shaped, strongly constricted basally. Cephalic dorsum lacking erect hairs though a few minute hairs of the ground-pilosity may be somewhat elevated. Pronotal humeri and dorsal alitrunk without standing hairs; postpetiole and first gastral tergite with simple short hairs that are suberect to erect. Entire alitrunk reticulate-punctate except for mesopleuron which is mostly smooth. Longitudinal costulae at base of first gastral sternite coarse and conspicuous.

Type Material
Holotype worker, Papua New Guinea: Madang (Friedrich Wlh.-hafen on label), 901 (Biro).

References based on Global Ant Biodiversity Informatics

 * Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
 * Janda M., G. D. Alpert, M. L. Borowiec, E. P. Economo, P. Klimes, E. Sarnat, and S. O. Shattuck. 2011. Cheklist of ants described and recorded from New Guinea and associated islands. Available on http://www.newguineants.org/. Accessed on 24th Feb. 2011.