Polyrhachis amana

Specimens have been collected from fogging samples in natural forest.

Identification
A member of the Polyrhachis mucronata  species group.

Kohout (2008) - The specimens from Dumoga-Bone (Sulawesi) are larger than the syntype examined (HL 1.90-2.00 versus HL 1.75 in a syntype) and differ in a number of characters. The clypeus in lateral view is distinctly sinuate in modern specimens, while in the syntypes it is virtually straight anteriorly and deeply impressed basally. The lateral outline of mesosoma of the modern specimens is moderately convex with its highest point located just behind the promesonotal suture. The mesosomal outline in the syntypes is more strongly convex with the highest point at the promesonotal suture itself. In the modern specimens the pronotal and propodeal spines are more divergent, the base of petiolar node in profile is broader and the petiolar spines are less elevated and almost straight. In the syntype the tips of the petiolar spines are slightly bent downwards. The colour of the body and appendages in modern specimens is uniformly black, with only the coxae and the proximal ends of femora reddish-brown. The body and most of the antennal scapes of the syntype are black, with the legs and antennal funiculi generally light to medium yellowish-brown. In spite of these differences I consider the modern material and syntype conspecific.

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

Nomenclature

 *  amana. Polyrhachis amanus Smith, F. 1861b: 41, pl. 1, fig. 13 (w.) INDONESIA (Sulawesi). Combination in P. (Myrmhopla): Emery, 1925b: 194.

Type Material
Kohout (2008) - Syntype workers. Type locality: INDONESIA, SULAWESI, Tonadano (A. R. Wallace),, (examined).

Polyrhachis amanus

One worker syntype in. Labelled “Tond.” (= Tondano, Sulawesi) and with the figure “15” written in pencil on the stage card; also with a Donisthorpe type-label.

One worker syntype in. Labelled “Tond. 15,” and with the figure “15” also written in pencil on the stage card.

References based on Global Ant Biodiversity Informatics

 * Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
 * Emery C. 1886. Saggio di un catalogo sistematico dei generi Camponotus, Polyrhachis e affini. Memorie della Reale Accademia delle Scienze dell'Istituto di Bologna 5: 363-382
 * Emery C. 1901. Formiciden von Celebes. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 14:565-580.
 * Kohout R.J., and M. Mohamed. 2008. A preliminary list of the Polyrhachis ants of the Maliau Basin Conservation area in Sabah, Borneo (Hymenoptera: Formicidae: Formicinae). Asian Myrmecology 2: 63-70.
 * Kohout, R. J. 2008. A review of the Polyrhachis ants of Sulawesi with keys and descriptions of new species (Hymenoptera: Formicidae: Formicinae). Memoirs of the Queensland Museum 52:255-317.
 * Robson Simon Database Polyrhachis -05 Sept 2014
 * Smith F. 1861. Catalogue of hymenopterous insects collected by Mr. A. R. Wallace in the islands of Ceram, Celebes, Ternate, and Gilolo. [part]. Journal and Proceedings of the Linnean Society of London. Zoology 6: 36-48.