The Ants of Africa
Genus Probolomyrmex
Contents - Proceratiinae - PROCERATIINAE Introduction

Genus Probolomyrmex Mayr (1901b: 2)


Diagnostic Features - No frontal lobes, these are represented by a thin rounded vertical plate separating the antennal insertions, in full face view, the antennal sockets entirely visible. Clypeus fused to frontal carinae and forming a plate which projects forward above the small curved mandibles, which are modified-triangular. Compound eyes usually absent. Antennal scapes fail to reach posterior border of head by a considerable distance. Alitrunk completely fused into a single structure without dorsal sutures. Middle and hind tibiae each with a single pectinate spur. Full adult colour yellowish-brown to red-brown. Small TL 2.4-4.2 mm.

Mayr's (1901b) genus definition is at {original description}. Arnold (1915) gave a translation; this is at {original description}. Junior synonym Escherichia (Forel, 1910c: 245), type species Escherichia brevirostris - see {original description}.

Genus revised by Taylor (1965d) and were considered also by Brown (1975). Most members of the genus are from savannah areas and Brown noted all appear to be rare and relatively cryptic (or nocturnal). Mainly collected in forest litter or soil, nest in hollow twigs, burrows or small pieces of rotten wood in or on the soil. Food unknown.

The three species known from Africa can be separated as follows (after Taylor, 1965d: 352) -

1 {short description of image}Only known specimen with compound eyes; also small with a much shorter petiolar node .
. Probolomyrmex brevirostris N.E. Africa (Eritrea, Uganda) - brevirostris
2 {short description of image}Larger species, HL > 0.76 mm, WL > 1 mm (WL = Weber's length of mesosoma, actually alitrunk diagonal length) - unique holotype with petiole node slightly higher than long, face moderately shining, very finely shagreened and near smooth South Africa - filiformis
3 {short description of image}Smaller species, HL < 0.61 mm, WL < 0.88 mm Guinea, West Africa - guineensis
4 {short description of image}Similar in overall size to guineensis but approximate dimensions HW 0.37 mm, HL 0.57, SL 0.32, SI 86; petiole relatively short and domed with deeply convex posterior face; petiole with sharp end to ventral process South Africa - Probolomyrmex new species C7939
Contents PONERINAE Introduction
2007, 2008, 2012, 2014 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.