Strumigenys doriae

Known from savanna and rainforest litter samples.

Identification
Bolton (2000) - A member of the doriae complex in the Strumigenys doriae-group. The three species of the magnifica complex (Strumigenys gloriosa, Strumigenys magnifica, Strumigenys superba), as well as having the mandibular apex as described above, are also the most luxuriantly hairy in the group, their main pilosity being much longer and more widely distributed than elsewhere. In species of the doriae-complex the pilosity, although about as dense as in the magnifica-complex, is nowhere near as long.

Within the doriae-complex two species, Strumigenys bryanti and Strumigenys hekate, have the lateral spongiform lobe of the petiole node relatively small. In profile or in dorsal view the lobe is more or less restricted to the posterior portion of the side of the node. In all other species the lobe is long, extending as far forward as the spiracle on the peduncle.

The final two species, Strumigenys doriae and Strumigenys mirifica, combine both narrow apical fork and long lateral petiolar lobe. They are easily separated as the latter has a small but distinct triangular preapical tooth on each mandible and lacks erect hairs on the anterior half of the cephalic dorsum.

Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Indonesia, Malaysia. Oriental Region: Thailand.

Nomenclature

 *  doriae. Strumigenys doriae Emery, 1887b: 469, pl. 2, fig. 22 (w.) INDONESIA (Ambon I.). Imai, Kubota, et al. 1985: 47 (k.). Senior synonym of ulcerosa: Bolton, 2000: 774. See also: Brown, 1954f: 166.
 * ulcerosa. Strumigenys ulcerosa Brown, 1954f: 162 (w.) INDONESIA (Sumba I.). Junior synonym of doriae: Bolton, 2000: 774.

Worker
Bolton (2000) - TL 3.5-3.9, HL 0.94-l.11, HW 0.62-0.77, CI 66-74, ML 0.48-0.58, MI 49-54, SL 0.56-0.70, SI 86-97, PW 0.34-0.42, AL 0.96-l.14 (12 measured).

Mandible without trace of preapical dentition. In anterior view apical fork of mandible forming a V-shape or very narrow-based U-shape. Propodeal teeth usually invisible in profile, either fully embedded in, or replaced by, spongiform tissue. Lateral spongiform lobe of petiole long, tapering anteriorly in dorsal view or in profile, but extending forward to the level of the spiracle on the peduncle. Postpetiole finely and densely reticulate-punctate.

Dorsolateral margin of head with 5 or more long fine hairs and a number of shorter simple hairs that freely project laterally; apicoscrobal hair usually slightly longer than any of the other main projecting hairs, its length about 0.50 X SL. With head in profile the longest erect hairs that arise from the dorsum in front of the highest point of the vertex are shorter than the longest hairs that arise between the highest point and the occipital margin; the longest of these is shorter than the maximum depth of the head capsule. Longest hairs on first gastral tergite shorter than length of tergite from base of limbus to apex and usually less than the maximum depth of the first gastral segment in profile.