Metapone jacobsoni

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Metapone jacobsoni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Metapone
Species: M. jacobsoni
Binomial name
Metapone jacobsoni
Crawley, 1924

Taylor,-Alpert-2016-Metapone-19-42.jpg

Taylor,-Alpert-2016-Metapone-19-46.jpg

Synonyms

Nothing is known about the biology of Metapone jacobsoni.

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (type locality).
Oriental Region: India, Nicobar Island (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

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.

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • jacobsoni. Metapone jacobsoni Crawley, 1924: 389 (q.) INDONESIA (Sumatra). Senior synonym of nicobarensis: Taylor & Alpert, 2016: 518.
  • nicobarensis. Metapone nicobarensis Tiwari & Jonathan, 1986b: 150, fig. 1 (w.q.) INDIA (Nicobar Is). Junior synonym of jacobsoni: Taylor & Alpert, 2016: 518.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

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