Strumigenys chapmani

Identification
Bolton (2000) - A member of the Strumigenys chapmani-group. This widely distributed species is diagnosed within the group by its lack of gastral flagellate hairs, lack of a lamella along the inner margin of the mandible, short basigastral costulae and a mostly smooth lateral alitrunk.

Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia, Malaysia, Philippines.

Nomenclature

 *  chapmani. Strumigenys chapmani Brown, 1954j: 68, fig. 1 (w.m.) PHILIPPINES. See also: Bolton, 2000: 767.

Worker
Bolton (2000) - TL 2.4-2.9, HL 0.56-0. 82, HW 0.57-0.73, CI 88-95, ML 0.22-0.30, MI 34-40, SL 0.26-0.36, SI 44-49, PW 0.25-0.32, AL 0.62-0.74 (15 measured).

Apical fork of mandible with apicodorsal tooth the longest; apicomedian and apicoventral teeth subequal or the ventral slightly longer than the median. Apicoventral tooth weakly rolled under, appearing just proximal of the apicodorsal tooth in full-face view. Dorsal surface of apicoventral tooth with a small intercalary tooth that arises near its base; usually (but not always) the intercalary tooth itself with a denticle at its dorsal base. Leading edge of scape moderately to quite strongly convex, degree of convexity varying among populations. Ventrolateral margin of head shallowly concave in front of the eye. Pleurae and side of propodeum mostly to entirely smooth. Basigastral costulae sparse and indistinct, shorter than length of postpetiole disc. Cephalic dorsum with dense short spatulate ground-pilosity, with a few inconspicuous short standing hairs along the occipital margin but otherwise without standing hairs. Dorsolateral margin of head fringed with anteriorly curved short spatulate hairs; usually without an apicoscrobal hair but rarely one present. Promesonotum with curved spatulate to spoon-shaped hairs, weakly to moderately elevated; mesonotum usually with 1-3 pairs of longer, stouter, more erect hairs but development of these is very variable between series. First gastral tergite with stiff stout hairs that are slightly to obviously expanded apically and similar to those on the waist segments. Dorsal (outer) surface of hind tibia and basitarsus with a few long projecting hairs, most are subclavate but the hair nearest the apex of the basitarsus is longest and finest, tapering to a point apically.

Type Material
Bolton (2000) - Holotype worker, paratype workers and males, PHILIPPINES: Negros Oriental, Cuernos Mts, Horns of Negros, or Dumaguete, 1500 ft, (J. W. Chapman) [examined].