Metapone jacobsoni

Nothing is known about the biology of .

Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia. Oriental Region: India, Nicobar Island.

Biology
Taylor and Alpert (2016) - M. jacobsoni seems more likely to be introduced than native on Great Nicobar Island, and Sumatra is the most likely ancestral source for the island population. The two lands are separated by less than 200km of open ocean, across which there must have been much past human passage in small boats, perhaps often carrying unmilled (fire)wood, possibly facilitating introduction.

Nomenclature

 * . Metapone jacobsoni Crawley, 1924: 389 (q.) INDONESIA (Sumatra).
 * Type-material: holotype queen, 1 paratype queen.
 * Type-locality: holotype Indonesia: Sumatra, Fort de Kock, 920 m., x.1914, no. 153 (E. Jacobson); paratype Fort de Kock, iv.1914, no. 1223 (E. Jacobson).
 * Type-depository: BMNH.
 * [Misspelled as jakobsoni by Kusnezov, 1960a: 126.]
 * Status as species: Chapman & Capco, 1951: 114; Gregg, R.E. 1958: 119; Kusnezov, 1960a: 126; Bolton, 1995b: 258; Taylor & Alpert, 2016: 518 (redescription).
 * Senior synonym of nicobarensis: Taylor & Alpert, 2016: 518.
 * Distribution: India (Nicobar Is), Indonesia (Sumatra).
 * nicobarensis. Metapone nicobarensis Tiwari & Jonathan, 1986b: 150, fig. 1 (w.q.) INDIA (Nicobar Is).
 * Type-material: holotype worker, 2 paratype queens.
 * Type-locality: holotype India: Nicobar Is, Rajendra Nagar, 30.xii.1975 (P.K. Maity and party); paratypes with same data.
 * Type-depository: NZSI.
 * [Note: Taylor & Alpert, 2016: 518, say that the type-material could not be found in NZSI.]
 * Status as species: Bolton, 1995b: 258; Mohanraj, et al. 2010: 6; Bharti, Guénard, et al. 2016: 39.
 * Junior synonym of jacobsoni: Taylor & Alpert, 2016: 518.

Description
Taylor and Alpert (2016) - (holotype, paratype): TL: 8.5, 8.75; HL: 1.48, 1.44; HW (across eyes): 1.00, 1.04; Maximum eye length: 0.42, 0.38; CI: 68, 72; MSL: 2.26, 2.30; PMW: 0.92, 0.94; PDW: 0.70, 0.72; PetL: 0.56, 0.60; PetW: 0.44, 0.46; PetH: 0.72, - ; PpetL: 0.44, - ; PpetW: 0.58, 0.58.

General features as in original description (Crawley, 1924), the key to Asian Metapone species and the relevant figures. Posterior face of subpetiolar process in oblique view relatively large, triangular; subpetiolar angle in side view approximately a right angle, not spinose; subpetiolar lamella opaque, approximately equilaterally triangular (note that the petiole could not be viewed unobstructed in true profile for illustration; its somewhat obscure outline is highlighted in figure). Other features are adequately illustrated.

Type Material
Taylor and Alpert (2016) - Gyne; Type locality: Fort de Kok (now Bukittingii—0°18′20″S, 100°22′9″E), Sumatra, Indonesia.

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
 * Crawley W.C. 1924. Ants from Sumatra, with biological notes by Edward Jacobson. Annals and Magazine of Natural History (9)13: 380-409
 * Gregg R. E. 1958. Two new species of Metapone from Madagascar (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 60: 111-121.
 * Kusnezov N. 1960. La posición sistemática del género Metapone Forel (Hymenoptera, Formicidae). Acta Zoologica Lilloana 18: 119-126.
 * Mohanraj P., M. Ali, and K. Veerakumari. 2010. Formicidae of the Andaman and Nicobar Islands (Indian Ocean: Bay of Bengal). Journal of Insect Science 10: Article 172
 * Mohanraj, P., M. Ali and K. Veenakumari. 2010. Formicidae of the Andaman and Nicobar Islands (Indian Ocean: Bay Of Bengal). Journal of Insect Science 10:172.
 * Smith M. R. 1947. A new species of Metapone Forel from New Guinea (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 49: 75-77.
 * Taylor R. W., and G. D. Alpert. 2016. The myrmicine ant genus Metapone Forel (Hymenoptera: Formicidae): a global taxonomic review with descriptions of twelve new species. Zootaxa 4105(6): 501-545.
 * Tiwari R. N., and J. K. Jonathan. 1986. A new species of Metapone Forel from Nicobar Islands (Hymenoptera: Formicidae: Myrmicinae). Records of the Zoological Survey of India 83: 149-153.