Camponotus syaukanii

Only known from the type locality in Kalimantan, Indonesia.

Identification
Minor worker: Head and dorsal parts of mesosoma reddish brown; ventral parts of mesosoma, petiole, and gaster black; antenna orange, distally infuscated. Vertex highly domed. Basal margin of clypeus triangularly emarginated; anterior margin medially convex and shiny. Flagellum of normal length. Mesosoma with reduced sculpture, shiny. Pronotum with short standing setae. Dorsal outline of pronotum moderately convex, of mesonotum and propodeum almost straight.

Major worker: Colour similar as in minor; head slightly darker. Head squared, shiny, with coarse puncturation; microsculpture evanescent except on area between high frontal carinae and eye. Eyes small. Clypeus with concave basal margin, a pair of large setiferous punctures near base, and a large, shallowly depressed area apically. Reticulated sculpture of mesosoma more distinct than in minor, reduced only on pronotum. Petiole and gaster reticulated as in minor. Petiolar node more slender than in minor.

This species is rather dark in colouration compared with Camponotus weiserti and Camponotus concurrens. The most closely related species is C. weiserti, but in the latter the mandible with a smaller striate area, in addition to colour difference. The minor worker of C. concurrens is easily separable from C. syaukanii by the strongly convex pronotum (see further notes under C. concurrens).

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

Nomenclature

 *  syaukanii. Camponotus (Myrmamblys) syaukanii Zettel & Yamane, 2018: 152, figs. 40-46 (w.) INDONESIA.

Type Material

 * Holotype (minor worker #1785; MZB) from Indonesia, Kalimantan, Tanah Tidung, Gunung Rian, hard dead branch, 26.III.2016, leg. Sk. Yamane & Syaukani, KM16-SKY-134.
 * Paratypes (MZB, SKYC, CZW, NHMW): 5 minor workers, 4 major workers, same nest series as holotype.

References based on Global Ant Biodiversity Informatics

 * Zettel H., P. Balaka, S. Yamane, A. Laciny, L. Lim, and I. S. Druzhinina. 2018. New mimetic ants from Southeast Asia – the Camponotus (Myrmamblys) inquilinus group (Hymenoptera: Formicidae: Camponotini). Zeitschrift der Arbeitsgemeinschaft Osterreichischer Entomologen 70: 125-174.