Smith, M.R., 1953
A relatively widespread species known from mainland New Guinea, New Britain and several Micronesian islands. Possibly dispersed by human activity.
(In gynes & workers) Striae in relevant areas less-strongly developed and less-regular; partly effaced, especially on frons and cheeks. Clypeal proboscis relatively short and broad. Petiole relatively short in lateral and dorsal view. Subpetiolar extension similar to alternative, but with its apex acutely pointed (mainland New Guinea, gyne and worker).
Keys including this Species
- Key to Metapone of Africa and Madagascar
- Key to Metapone of the Pacific Islands
- Key to Micronesian Ants
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Specimens from Dublon Island are individually mounted on separate pins and identically labelled. They were almost certainly collected together, providing a matching Melanesian worker-gyne association. The Gogol colony was collected in lowland rainforest near the edge of a large recently (and environmentally questionably) clear-felled tract at a site previously deep in virgin forest, and thus almost certainly a “native” habitat unlikely to have been penetrated by an introduced species. We conclude that M. truki is probably of New Guinean rather than Micronesian origin, and that the Micronesian populations were likely derived from one or more introduced New Guinean propagules. The appropriate areas were subject to much aircraft and shipping movement by both Japanese and American forces during the Second World War (1942–1945).
Koror Island gyne is labelled “Voucher specimen Gottwald study 1968 My- 109”. Its mouthparts were discussed and illustrated by W.H. Gottwald (1969: p107, plate 80).
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- truki. Metapone truki Smith, M.R. 1953d: 135 (w.) TRUK I.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Taylor and Alpert (2016) - Our concept of M. truki is based on assertion of conspecificity between the holotype worker and workers from various samples. The New Guinean Gogol Valley colony series provides confident identification of a worker-associated gyne. Its smaller workers closely match the Micronesian holotype, and its larger workers demonstrate that there can be considerable intranidal size variation in this species.
Taylor and Alpert (2016) - (listed in order: M. truki holotype; other Micronesian workers: smallest (M. truki Paratype, largest (LACMNH Dublon Island specimen); Gogol Valley colony series: smallest; largest): TL(ca): 6.0; 5.1, 6.2; 5.1, 6.8. HL: 1.18; 1.13, 1.32; 1.10, 1.61. HW: 0.88; 0.85, 0.95; 0.78, 1.11. CI: 75; 76, 72; 71, 69. CpL: 0.43; 0.41, 0.50; 0.42, 0.57. CpI: 36; 36, - ; - , 35. MSL: 1.44; 1.40, 1.65; 1.34, 1.96. PML: 0.75; 0.73, 0.88; 0.70, 1.03. PMW: 0.61; 0.57, 0.63; 0.55, 0.76. PMI: 52; 52, 53; 52, 53. PDW: 0.57; 0.52, 0.58; 0.47, 0.67. PetL: 0.44; 0.39, 0.47; 0.37, 0.62. PetW: 0.35; 0.34, 0.40; 0.33, 0.51. PetH: 0.62; 0.57, 0.69; 0.54, 0.79. PpetL: 0.34; 0.32, 0.41; 0.32, 0.53. PpetW: 0.45; 0.43, 0.55; 0.41, 0.67. PpetH: 0.49; 0.47, 0.57; 0.44, 0.67. GW: 0.91; 0.88, 0.96; 0.85, 1.23.
Taylor and Alpert (2016) - Gogol Valley colony Gyne: HL: 1.68, HW (across eyes): 1.06, CI: 63, CpL: 0.61, CpI: 36, WL: 3.52, PetL: 0.66, PetW: 0.52, PetH: 0.86, PpetL: 0.53, PpetW: 0.68, PpetH: 0.66, GW: 1.21. The Koror gyne is small and relatively heavily sculptured.
Taylor and Alpert (2016) - Worker: Caroline islands, Truk (properly Chuuck) Island [7°00’N, 152°00’E].
- Clouse, R. M. 2007. The Ants (Hymenoptera: Formicidae) of Micronesia. Micronesica. 39(2): 171–296. PDF
- Smith, M. R. 1953d. A new Metapone from the Micronesian Islands (Hymenoptera, Formicidae). J. N. Y. Entomol. Soc. 61: 135-137 PDF(page 135, worker described)
- Taylor, R. W. and G. D. Alpert, G. D. 2016. The myrmicine ant genus Metapone Forel (Hymenoptera: Formicidae): a global taxonomic review with descriptions of twelve new species. Zootaxa. 4105(6):501-545. [2016-04-27] PDF