Gesomyrmex tobiasi

Nothing is known about the biology of .

Identification
Dubovikoff (2004) - The new species differs from female Gesomyrmex luzonensis by the higher thorax, and the structures of petiole and clypeus (soldiers of species of this genus are morphologically similar to female). G. tobiasi differs from other extant species (only workers are known) also on structure of petiole with protruding lobe and clypeus with two lateral protruding teeth.

Distribution based on Regional Taxon Lists
Oriental Region: Vietnam.

Nomenclature

 *  tobiasi. Gesomyrmex tobiasi Dubovikoff, 2004b: 220, fig. 1-2 (q.) VIETNAM.

Queen
HK = 2.125, HW = 1.5, SL = 0.75, OL = 0.65, FL = 1.2, FW = 0.55, TL = 3.625, TH = 1.425, PL = 0.675, PH = 0.55, CI = 0.706, SI = 0.867, FI = 0.458, PI = 0.815, TI = 2.544.

Total length about 9.5 mm. Body yellow, mandibles and each of the tergites (in median part) castaneous. Head oblong, rectangular, about 1.5 times as long as broad (Fig. 2). Surface of clypeus, frons and genae longitudinally striated. Vertex covered with minute and scattered punctures. Eyes large, nearly 0.33 times as long as the head. Antennae 10-jointed. Scape is relatively short, its length approximately equal of eyes length. Terminal joint is oblong. The clypeus with two protruding teeth in their lateral parts directed to genae. Mesosoma oblong, its length about 2.5 times as long as height. Slope of pronotum is moderately steep (Fig 1), as distinct from G. luzoensis. Petiole with protruding lobe at the ventral extremity. Hairs situated on the middle part of frons and clypeus, the gular surface of the head, the ventral surfaces of cervum, protruding lobe of petiole and the sternites (Fig 1).

Type Material
Holotype: queen, Vietnam, Hoa Binh Prov., Mai Chau Distr., 40 km W Mai Chau, Pa Co, h = 1090, 19.IV.2002 (Belokobylskij.

Etymology
The species is named for Vladimir Ivanovich Tobias, a famous Russian entomologist, who helped me in my work with ant collections of ZISP for many years.