Metapone greeni

Identification
Subpetiolar extension relatively large, longitudinally subrectangular with minutely rounded corners; its base almost as long as the ventral subpetiolar edge. (Sri Lanka, gyne & worker—Figs 16–27)

Distribution based on Regional Taxon Lists
Oriental Region: Sri Lanka.

Nomenclature

 *  greeni. Metapone greeni Forel, 1911h: 449, pl. 14, figs. 1-10 (w.q.m.l.) SRI LANKA. See also: Emery, 1912b: 95; Wheeler, W.M. 1919h: 179; Wheeler, G.C. & Wheeler, J. 1953d: 186.

Description
Worker diagnosis. General and diagnostic features as in original description (Forel, 1911), the key to Asian Metapone species above and the accompanying figures. Clypeus anteriorly rostrate, the free lateral margins convergent apically, anterolateral corners rounded, anterior border broadly convex, no accessory denticles. Eyes relatively large; maximum diameter approximating the width of the apical antennomere, with many minute irregularly sized and arrayed unpigmented facets. Posterior face of subpetiolar process in side view almost vertical, its outline approximately aligned with posterior outline of node; framing lamella distinct, as illustrated. Subpetiolar extension rectangular, about twice as long as high, barely translucent, the antero- and posteroventral corners narrowly rounded; ventral outline shallowly convex. Dimensions: The M. greeni lectotype and the smallest MNHG paralectotype have the following dimensions: HL 1.41, 1.88; HW 1.01, 1.41; CI 72, 75; PMW 0.82, 1.17; MSL 1.56, 2.35. The two MCZC paralectotypes, the USNMNH paralectotype, and the M. johni lectotype have the following dimensions (note that the M. johni paralectotype has HW 1.30mm like the lectotype): TL: ca.6.4, 8.2; 6.9; 7.6; HL: 1.61, 1.91; 1.76; 1.74; HW: 1.22, 1.43; 1.37; 1.30; CI: 76, 75; 78; 75; PMW: 0.91, 1.13; 1.01; 1.04; MSL: 1.76, 2.27; 1.90; 2.16; PetL: 0.53, 0.62; 0.58; 0.60; PetW: 0.56, 0.70; 0.64; 0.66; PetH: 0.92, 1.13; 0.98; 1.04; PpetW: 0.71, 0.87; 0.75; 0.84; PpetH: 0.73, 0.89; 0.78; 0.82; GW -, -; 1.35; 1.42. Gyne diagnosis. General features as in original description (Forel, 1911) and Figs 21–23 of an M. johni syntype. That specimen has: TL: 9.8; HL: 1.74; HW (across eyes): 1.24; Maximum eye length: 0.52 CI: 71 MSL: 2.90; PMW: 1.02; PDW: 0.84; PetL: 0.72; PetW: 0.68; PetH: 1.08; PpetL: 0.66; PpetW: 0.86; PpetH: 0.84. Dimensions are not available for the M. greeni syntype gyne. Male: General features as in original descriptions of M. greeni and M. johni (Forel, 1911; Karavaiev, 1933).