Metapone mjobergi

Identification
Anterior clypeal border without dentate projections; its outline straight to very feebly concave or convex; anteroventral extremities each with a small squarish excision. All workers apparently with reduced, vestigial eyes (Figs 116, 117). Petiolar node in workers and gynes relatively small; subpetiolar extension in lateral view a posteriorly inclined triangle or low semicircle, its base anteriorly occupying about 2/3 of the subpetiolar edge (Fig 120). (North Queensland).

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 *  mjobergi. Metapone mjobergi Forel, 1915b: 36 (w.q.) AUSTRALIA. See also: Wheeler, W.M. 1919h: 181.

Description
Worker diagnosis. General features as in original description (Forel, 1914), as illustrated here and cited in the key to Australian species above. Clypeus projecting anteriorly shortly beyond its lateral sections, not rostrate; anterior border shorter than the width of the body of the sclerite, stepped inwards at each corner; anterior border feebly concave to feebly convex. Eyes vestigial, very small and somewhat obscure, with 3 to 5 minute, irregular, indistinct facets. No evidence of polymorphism in eye size, as seen in M. tillyardi. Petiolar node approximately twice as wide as long in dorsal view. Subpetiolar extension shallowly sub-semicircular to triangular, its apex inclined forwards, base about ¾ as long as subpetiolar edge. Posterior subpetiolar face triangular, margined laterally but not apically. Subpostpetiolar process an acute point in lateral view. Sculpturation as illustrated. Dimensions: (smallest and largest specimens respectively from Kuranda and E of Lake Barrine, N =14): TL ca: 5.4, 6.9; HL: 1.23, 1.51; HW: 0.96, 1.18; CI: 78, 78; CpL: 0.45, 0.52; CpI: 37, 34; MSL: 1.31, 1.84; PML: 0.78, 0.99; PMW: 0.72, 0.97; PMI: 60, 54; PDW: 0.58, 0.78; PetL: 0.37, 0.46; PetW: 0.50, 0.78; PetH: 0.64, 0.82; PpetL: 0.36, 0.47; PpetW: 0.50, 0.63; PpetH: 0.54, 0.73; GW: 1.0, 1.33. The MHMG syntype worker is relatively large, with HL 1.60; HW 1.23; CI 77; PW 1.05; MSL 2.27. Gyne diagnosis. General features as in original description (Forel, 1915), as illustrated and in the key to Australian species above. Petiole in dorsal view about as wide as long with strong posterolateral denticles. Clypeus and subpetiolar process as in worker; subpostpetiolar process in lateral view shorter, less acute, narrowly rounded apically.