Polyrhachis latona

Nothing is known about the biology of .

Identification
A member of the Polyrhachis aculeata species group in the subgenus Myrma

Kohout (2013): When describing P. latona, Wheeler (1909) noted that his new species ‘is closely related to Polyrhachis relucens Latr., Polyrhachis mayri Roger [= P. illaudata Walker] and Polyrhachis proxima Roger’. He listed the smaller size, more approximate frontal carinae, different pilosity, shallower promesonotal and ‘mesoëpinotal’ notches in the lateral margins, differences in the shape and length of the pronotal and petiolar spines and several other characters as the main differences distinguishing his new species. Besides the characters indicated by Wheeler, P. latona also differs from the above species by having rather flat, mildly posteriorly protracted eyes.

Distribution based on Regional Taxon Lists
Oriental Region: Taiwan, Thailand, Vietnam. Palaearctic Region: China, Japan.

Nomenclature

 *  latona. Polyrhachis latona Wheeler, W.M. 1909d: 337 (w.) TAIWAN. Forel, 1912a: 79 (m.). Combination in P. (Myrma): Emery, 1925b: 201. Senior synonym of dorsorugosa: Wu & Wang, 1995: 167.
 * dorsorugosa. Polyrhachis latona var. dorsorugosa Forel, 1913f: 202 (w.m.) TAIWAN. Combination in P. (Myrma): Emery, 1925b: 201. Raised to species: Wang & Wu, 1991: 599. Junior synonym of latona: Wu & Wang, 1995: 167.

Worker
Kohout (2013): Dimensions (syntypes cited first): TL c. 6.25-7.16, 6.30-7.26; HL 1.62-1.72, 1.65-1.84; HW 1.22-1.31, 1.26-1.34; CI 75-76, 73-78; SL 1.96-2.06, 2.03-2.21; SI 157-161, 156-166; PW 1.18-1.34, 1.25-1.40; MTL 1.93-2.09, 2.00-2.25 (2+10 measured).

Queen
Kohout (2013): (not previously described). Dimensions: TL c. 8.62; HL 1.90; HW 1.42; CI 75; SL 2.25; SI 158; PW 1.78; MTL 2.31 (1 measured).

Queen larger than worker with usual characters identifying full sexuality, including three ocelli, complete thoracic structure and wings. Pronotal spines very short, about as long as basal width. Mesoscutum only marginally wider than long; lateral margins converging anteriorly into rather narrowly rounded anterior margin; median line distinct; parapsides virtually flat; mesoscutum in profile with anterior face widely rounding onto convex dorsum. Mesoscutellum weakly convex, not distinctly elevated above dorsal plane of mesosoma. Propodeum with lateral margins in profile somewhat angular at midlength, terminating in short ridges that are continued medially forming distinct, dorsally bowed carina dividing propodeal dorsum from declivity. Petiole with dorsolateral and lateral spines subequal in length; dorsal margin with distinct intercalary tooth. Sculpturation, pilosity, pubescence and colour very similar to worker.

References based on Global Ant Biodiversity Informatics

 * Abe T. 1974. Notes on the fauna of ants in Iriomote Island. Ecol. Stud. Nat. Cons. Ryukyu Isl. 1:105-111.
 * Azuma, S. and M. Kinjo. 1987. Family Formicidae, In Checklist of the insects of Okinawa. The Biological Society of Okinawa, Nishihara. Pages 310-312.
 * 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
 * Cheng D., Z. Chen, and S. Zhou. 2015. An analysis on the ant fauna of Jinzhongshan Nature Reserve in Gunagxi, China. Journal of Guangxi Normal University: Natural Science Edition 33(3): 129.137.
 * Forel A. 1912. H. Sauter's Formosa-Ausbeute. Formicidae (Hym.) (Schluss). Entomol. Mitt. 1: 45-61.
 * Forel A. 1913. H. Sauter's Formosa-Ausbeute: Formicidae II. Arch. Naturgesch. (A)79(6): 183-202
 * Guénard B., and R. R. Dunn. 2012. A checklist of the ants of China. Zootaxa 3558: 1-77.
 * Hua Li-zhong. 2006. List of Chinese insects Vol. IV. Pages 262-273. Sun Yat-sen university Press, Guangzhou. 539 pages.
 * Jaitrong W.; Nabhitabhata, J. 2005. A list of known ant species of Thailand. The Thailand Natural History Museum Journal 1(1): 9-54.
 * Kohout R. J. 2013. A review of the Polyrhachis aculeata species-group of the subgenus Myrma Billberg (Hymenoptera: Formicidae: Formicinae), with keys and descriptions of new species. Australian Entomologist 40(3): 137-171.
 * Li Z.h. 2006. List of Chinese Insects. Volume 4. Sun Yat-sen University Press
 * Onoyama K. 1976. A premilinary study on the ant fauna of Okinawa-ken, with taxonomic notes (Japan; Hymenoptera: Formicidae). Ecol. Stud. Nat. Cons. Ryukyu Isl. II: 121-141.
 * Ran H., and S. Y. Zhou. 2013. Checklist of Chinese Ants: Formicomorph Subfamilies ( Hymenoptera: Formicidae) (III). Journal of Guangxi Normal University : Natural Science Edition 31(1): 104-111.
 * Robson Simon Database Polyrhachis -05 Sept 2014
 * Shuang Zhao. 2006. Ant of Guangdong Province (Hymenoptera: Formicidae): A taxonomic study of the ants of Guangdong (Hymenoptera: Formicidae). Master's thesis in Agriculture Insects and Pest Control. Supervisor Fenglong Jia. 115 pages.
 * Takamine H. 1994. Geographical destributions of three species of Polyrhachis on the Nansei Islands, Japan. Ari 17: 9.
 * Terayama M. 1992. Structure of ant communities in East Asia. A. Regional differences and species richness. Bulletin of the Bio-geographical Society of Japan 47: 1-31.
 * Terayama M. 1992. Structure of ant communities in east Asia. 1. Regional differences and species richness. Bull. Biogeogr. Soc. Japan 47(1): 1-31.
 * Terayama M. 2009. A synopsis of the family Formicidae of Taiwan (Insecta: Hymenoptera). Research Bulletin of Kanto Gakuen University. Liberal Arts 17:81-266.
 * Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.
 * Terayama, M. 2009. A synopsis of the family Formicidae of Taiwan (Insecta; Hymenoptera). The Research Bulletin of Kanto Gakuen University 17: 81-266.
 * Wheeler W. M. 1909. Ants of Formosa and the Philippines. Bulletin of the American Museum of Natural History 26: 333-345.
 * Wheeler W. M. 1929. Ants collected by Professor F. Silvestri in Formosa, the Malay Peninsula and the Philippines. Bollettino del Laboratorio di Zoologia Generale e Agraria della Reale Scuola Superiore d'Agricoltura. Portici 24: 27-64.
 * Yamane S., S. Ikudome, and M. Terayama. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp, 138-317.
 * Yamane S.; Ikudome, S.; Terayama, M. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp138-317.
 * Zhou S.-Y. 2001. Ants of Guangxi. Guangxi Normal University Press, Guilin, China, Guilin, China. 255 pp.