Nesomyrmex reticulatus

This species is known to occur in dry forests in lowlands between 50 m and 130 m (mean: 94 m) of the western and southern coasts of Madagascar.

Identification
A member of the sikorai species-group.

Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar.

Nomenclature

 *  reticulatus. Nesomyrmex reticulatus Csösz & Fisher, 2016b: 20, figs. 3, 11A-C (w.q.) MADAGASCAR.

Worker
Body color: yellow; brown. Body color pattern: concolorous. Absolute cephalic size: 511 μm [472, 545]. Cephalic length vs. maximum width of head capsule (CL/CWb): 1.151 [1.125, 1.18]. Postocular distance vs. cephalic length (PoOc/CL): 0.462 [0.449, 0.476]. Postocular sides of cranium contour, anterior view orientation: converging posteriorly. Postocular sides of cranium contour, anterior view shape: strongly convex. Vertex contour line in anterior view shape: slightly concave. Vertex sculpture: main sculpture homogeneously forked costate, ground sculpture areolate. Gena contour line in anterior view shape: convex. Gena contour from anterior view orientation: strongly converging. Gena sculpture: rugoso-reticulate with areolate ground sculpture. Concentric carinae laterally surrounding antennal foramen: present. Eye length vs. absolute cephalic size (EL/CS): 0.238 [0.224, 0.254]. Frontal carina distance vs. absolute cephalic size (FRS/CS): 0.322 [0.310, 0.335]. Longitudinal carinae on median region of frons: absent. Smooth median region on frons count: absent. Antennomere count: 12. Scape length vs. absolute cephalic size (SL/CS): 0.704 [0.679, 0.72]. Median clypeal notch: present. Median carina of clypeus: absent. Spine length vs. absolute cephalic size (SPST/CS): 0.236 [0.224, 0.257]. Minimum spine distance vs. absolute cephalic size (SPBA/CS): 0.254 [0.235, 0.275]. Apical spine distance vs. absolute cephalic size (SPTI/CS): 0.267 [0.244, 0.284]. Propodeal spine shape: straight; triangular, blunt. Apical distance of pronotal spines vs. absolute cephalic size (PSTI/CS): 0.629 [0.608, 0.65]. Metanotal depression: present. Dorsal region of mesosoma sculpture: areolate ground sculpture, superimposed by dispersed rugae. Lateral region of pronotum sculpture: areolate ground sculpture, main sculpture dispersed costate. Mesopleuron sculpture: areolate ground sculpture superimposed by dispersed rugulae. Metapleuron sculpture: areolate ground sculpture superimposed by dispersed rugulae. Petiole width vs. absolute cephalic size (PEW/CS): 0.235 [0.222, 0.242]. Dorsal region of petiole sculpture: ground sculpture areolate, main sculpture absent. Postpetiole width vs. absolute cephalic size (PPW/CS): 0.37 [0.339, 0.386]. Dorsal region of postpetiole sculpture: ground sculpture areolate, main sculpture absent.

Type Material
Holotype worker: Madagascar: Prov. Toliara, Forêt de Kirindy, 15.5 km 64° ENE Marofandilia, 100 m, -20.045 N, 44.66222 E, 28.xi.2001, collection code: BLF04604; CASENT0418497, Fisher-Griswold Arthropod Team, beating low vegetation tropical dry forest (, CASENT0418497); Paratypes: 3 workers and a gyne with the same label data with the holotype under CASENT codes: CASENT0473935, BLF04605, (1w, CAS); CASENT0418443, BLF04604, (1Q, CAS); CASENT0418447, BLF04604, (1w, CAS); CASENT0418482, BLF04604, (1w, CAS).

Etymology
The name refers to the fine, micro-reticulate body sculpturing.