Strumigenys dantalion

A few of the type specimens were collected from lowland forest.

Identification
Bolton (2000) - A member of the Strumigenys yaleopleura-group. Easily distinguished from the other two species in the group as both Strumigenys furfara and Strumigenys yaleopleura have 3 flagellate hairs on the dorsolateral margin of the head and an extra pair of flagellate hairs on the pronotum, located dorsally between the humeral pair and the mesonotal pair.

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

Nomenclature

 *  dantalion. Strumigenys dantalion Bolton, 2000: 913 (w.) INDONESIA (Sulawesi).

Worker
Holotype. TL 1.8, HL 0.50, HW 0.40, CI 80, ML 0.15, MI 30, SL 0.22, SI 55, PW 0.24, AL 0.53. Dorsolateral margin of head with a single freely laterally projecting flagellate hair, the apicoscrobal. Pronotal dorsum without standing hairs except for the humeral pair. Katepisternum, metapleuron and side of propodeum smooth or at most with punctation around the periphery. Basitarsus of hind leg with two flagellate hairs on its dorsal (outer) surface; dorsal (outer) surface of hind tibia without flagellate hairs. Propodeal declivity with an indistinct narrow lamella, its posterior (free) margin concave. Disc of postpetiole mostly smooth but there are usually a few fine longitudinal costulae anteriorly.

Paratypes. TL 1.7-1.8, HL 0.46-0.50, HW 0.36-0.40, CI 77-80, ML 0.14-0.16, MI 30-33, SL 0.21-0.22, SI 55-59, PW 0.22-0.24, AL 0.48-0.54 (5 measured).

Type Material
Holotype worker, Indonesia: Sulawesi Utara, Danau Mooat, 1200 m., nr Kotamobagu, l3.ix.1985 (no collector's name). Paratypes. 1 worker with same data as holotype; 1 worker, Indonesia: Sulawesi Utara, Dumoga-Bone N. P., 12.ix.1985, 664 m., ‘Edwards’ camp, lowland forest (no collector’s name); 3 workers, Sulawesi Utara, Dumoga-Bone N. P., ii.1985, lowland forest, 200-400 m., 2m2 sample of litter, BB 12 (P. M. Hammond); 2 workers with same data as last but BB 13 (BMNH,, ).

References based on Global Ant Biodiversity Informatics

 * Asfiya W., L. Lach, J. D. Majer, B. Heterick, and R. K. Didham. 2015. Intensive agroforestry practices negatively affect ant (Hymenoptera: Formicidae) diversity and composition in southeast Sulawesi, Indonesia. Asian Myrmecology 7: 87-104.