Formica hayashi

This species is common in mountainous areas, especially in Baekdudaegan, Korea (Dong & Kim, 2019). Within Japan, this species is abundant at woodland margins from low elevations to mountainous regions. In southern Kyushu it penetrates grassland areas and is more abundant there than Formica japonica. It nests under stones or other covering material. The nuptial flight occurs 2 to 3 weeks later than in F. japonica (Japanese Ant Image Database).

Identification
Males of this species can be distinguished from the morphologically similar Formica japonica by the following characteristics (Terayama & Hashimoto, 1996; Dong & Kim, 2019):
 * Posterolateral corners of head rounded in frontal view.
 * Antennal scape long.
 * Absence of erect hairs on the 2nd gastral tergites excepting a row of hairs on the posterior margin.

Distribution based on Regional Taxon Lists
Palaearctic Region: Japan, Republic of Korea.

Biology
Harada (2011) noted this ant is ground nesting. It does forage in trees and was found on 44 of 224 trees sampled in a Joyama Park, Hioki City, Japan study of arboreal ants. Crematogaster matsumurai foragers were also present on 19 of these trees.

Nomenclature

 *  hayashi. Formica hayashi Terayama & Hashimoto, 1996: 4, figs. 8-12 (w.) JAPAN.

References based on Global Ant Biodiversity Informatics

 * Fukumoto S. 2009. Ants at the Korimoto Campus of Kagoshima University. Nature of Kagoshima 35: 67. (+Personal communication 19 May 20014)
 * Fukumoto S. 2017. Records of ants (Hymenoptera: Formicidae) from Uji-shima, Uji Islands, Kagoshima, Japan. Nature of Kagoshima 43: 295–296.
 * Fukumoto S., Jaitrong W. and Yamane S.K. 2013. Ant Fauna of Kuro-shima, Iwo-jima and Take-shima islands, Kagoshima Prefecture, southwestern Japan. Nature of Kagoshima 39: 119-125
 * Fukumoto S., W. Jaitrong, and S. Yamane. 2013. Ant fauna of Take-shima, Iwo-jima and Kuro-shima islands, Kagoshima Prefecture, southwestern Japan. Nature of Kagoshima 39: 99-105.
 * Harada Y. 1997. Ants from the Koshiki islands, Kagoshima-ken, southern Japan. Ari 21: 1-4.
 * Harada Y. 2000. Ant fauna of the forest floor of the Koshikijima Islands, Kagoshima-ken, southern Japan. Ari 24: 4-11.
 * Harada Y. 2011. Arboreal ant fauna of Joyama Park, Kagoshima Prefecture, southern Japan. Asian Myrmecology 4: 79-87.
 * Harada Y., D. Fukukura, R. Kurisu, and S. Yamane. 2013. Ants of Ports, monitoring of alien ant species. Bull. Biogeogr. Soc. Japan 68: 29-40.
 * Harada Y., H. Yadori, M. Yoneda, R. Takinami, K. Nagahama, Y. Matsumoto, A. Oyama, S. Maeda, and S. Yamane. 2009. Ant fauna of Tanegashima (Hymenoptera, Formicidae). Nankiseibutu, the Nanki Biological Society 51(1): 15-21.
 * Harada Y., K. Asai, M. Araba and T. Higasayama. 2018. Ants at ports on Kuro-shima, Iwo-jima and Take-shima, Kagoshima Prefecture, Japan. Nature of Kagoshima 45: 129–134.
 * Harada Y., K. Nishikubo, K. Matsumoto, M. Matsuda, Y. Inazawa, Y. Ozono, S. Koto, N. Kawaguchi, and S. Yamane. 2011. Ant fauna of Japanese beech (Fagus crenata) forests in southwestern Japan. Bull. Biogeogr. Soc. Japan 66: 115-127.
 * Harada Y., K. Tashiro, K. Ebihara, H. Yadori, M. Yoneda, R. Takinami, K. Nagahama, and K. Hayashi. 2008. Ant fauna of the lavas of Sakurajima Volcano, Southern Japan. Bull. Biogeogr. Soc. Japan 63: 205-215.
 * Harada Y., S. Haruguchi, T. Iwasaki, K. Onishi, Y. Tashiro, and Sk Yamane. 2010. Ants from Japanese cherry trees, Prunus x yedoensis, in public parks in Kagoshima, southwestern Japan. Bull. Biogeogr. Soc. Japan 65: 169-179.
 * Harada Y., Y. Matsumoto, S. Maeda, A. Oyama, and S. Yamane. 2009. Comparison of ant fauna among different habitats of Yaku-shima Island, southern Japan. Bull. Biogeogr. Soc. Japan 64: 125-134.
 * Harada Y., Yadori H., Takinami R., Nagahama K., Matsumoto Y., Oyama A., Maeda S. and Yamane S.K. 2013. Ants of the southernmost Fagus crenata forest in Japan. Nature of Kagoshima 39: 113-118
 * Hosoichi S., M. M. Rahman, T. Murakami, S. H. Park, Y. Kuboki, and K. Ogata. 2019. Winter activity of ants in an urban area of western Japan. Sociobiology 66(3): 414-419.
 * Hosoichi S., M. Yoshimura, Y. Kuboki, and K. Ogata. 2007. Ants from Yakushima Island, Kagoshima Prefecture. Ari 30: 47-54.
 * Hosoishi S. 2006. Ant fauna of Noko Island. pp99-107. In: The floristic and faunistic surveys of the Noko Island.
 * Hosoishi S., M. Yoshimura, Y. Kuboki, and K. Ogata. 2007. Ants from Yakushima Island, Kagoshima Prefecture. Ari 30: 47-54.
 * Ikeshita Y., A. Gotoh, K. Yamamoto, N. Taniguchi, and F. Ito. 2007. Ants collected in Mt. Linoyama, Marugame, Kagawa Prefecture (Hymenoptera, Formicidae). Kagawa Seibutsu 34: 59-62.
 * Ikudome S. and S. Yamane. 2007. Ants, wasps and bees of Iwo-jima Northern Ryukyus, Japan (Hymenoptera, Aculeata). Bull. Inst. Minami-Kyushu Reg. Sci. (Kagoshima Women's Jr. Coll.) 23: 1-7.
 * Iwata, Kouki, Eguchi, Katsuyuki and Yamane, Seiki. 2005. A Case Study on Urban Ant Fauna of Southern Kyusyu, Japan, with Notes on a New Monitoring Protocol (Insecta, Hymenoptera, Formicidae). Asia-Pacific Entomol. 8(3):263-272.
 * Kawahara Y., S. Hosoyamada, and S. Yamane. 1999. Ant fauna of the Terayama Station for Education and Research on Nature, Kagoshima University. Bulletin of the Faculty of Education, Kagoshima University. Natural Science 50: 147-156.
 * Kondoh M. 1988. Ant communities at the submountain zone of Seimoh, Gumma Prefecture, in relation to vegetation types. ARI Reports of the Myrmecologists Society (Japan) 16: 2
 * Kuboki Y., K. Ogata, and E. Kasuya. 2006. Note on the bait trapping method. ANeT Newsletter 8: 16-19
 * Kupianskaya A. N., Lelej, A.S., and Urbain, B. K. 2000. The Ants (Hymenoptera: Formicidae) of the Kuril Islands. Far Eastern Entomologist. 92:1-21.
 * Kupianskaya, A. N., Lelej, A.S., and Urbain, B. K. 2000. The Ants (Hymenoptera: Formicidae) of the Kuril Islands. Far Eastern Entomologist. 92:1-21.
 * Maeto K. and S. Sato. 2004. Impacts of forestry on ant species richness and composition in warm-temperate forests of Japan. Forest Ecology and Management 187: 213223.
 * Matsumura S. and Yamane Sk. 2012. Species composition and dominant species of ants in Jigenji Park, Kagoshima City, Japan. Nature of Kagoshima 38: 99107
 * Matsumura S., and S. Yamane. 2012. Species composition and dominant species of ants in Jigenji Park, Kagoshima City, Japan. Nature of Kagoshima 38: 99-107.
 * Park S. H., S. Hosoishi, K. Ogata, and E. Kasuya. 2014. Changes of Species Diversity of Ants Over Time: a Case Study in Two Urban Parks. J. Fac. Agr., Kyushu Univ., 59 (1), 7176.
 * Park S. H., S. Hosoishi, K. Ogata, and Y. Kuboki. 2014. Clustering of ant communities and indicator species analysis using self-organizing maps. Comptes Rendus Biologies http://dx.doi.org/10.1016/j.crvi.2014.07.003
 * Shimana Y., and S. Yamane. 2009. Geogrpahical distribution of Technomyrmex brunneus Forel (Hymenoptera, Formicidae) in the western part of the mainland of Kagoshima, South Kyushu, Japan. Ari 32: 9-19.
 * Tanaka H. O., T. F. Haraguchi, I. Tayasu, and F. Hyodo. 2019. Stable and radio-isotopic signatures reveal how the feeding habits of ants respond to natural secondary succession in a cool-temperate forest. Insectes Sociaux 66(1): 37-46.
 * Terayama M., K. Murata, and N. Minakawa. 1998. Ants collected by the members of the International Kuril Islands Project, 1995. Ari 22: 10-12.
 * Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.
 * Terayama M., and R. Sonobe. 2002. Ants from the Nasu Imperial Villa, Tochigi Prefecture, Japan. Flora and fauna of the Tochigi Prefectural Museum research report Nasu Imperial Villa 157-161.
 * Terayama M.; Hashimoto, Y. 1996. Taxonomic studies on the Japanese Formicidae, part 1. Introduction to this series and descriptions of four new species of the genera Hypoponera, Formica and Acropyga. Nature & Human Activities 1:1-8.
 * Terayama. M. 2004. Geological and ecological distribution of Japanese ants communities. (translated from Japanese) Reports of the Saitama Prefecture Animal Research Association. 48:24
 * Terayama. M. 2004. Geological and ecological distribution of Japanese ants communities. (translated from Japanese) Reports of the Saitama Prefecture Animal Research Association. 48:30
 * Yamane S. 2019. Seasonal change in the foraging activity of ants in a residential area of mainland Kagoshima, Southwest Japan (Insecta, Hymenoptera, Formicidae). Nature of Kagoshima 45: 361–366.
 * Yamane S. 2019. Seasonal change in the foraging activity of ants in a residential area of mainland Kagoshima, Southwest Japan (Insecta, Hymenoptera, Formicidae). Nature of Kagoshima 45: 361–366.
 * 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., Y. Harada, and K. Eguchi. 2013. Classification and ecology of ants. Natural history of ants in Southern Kyushu. 200 pages
 * 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.
 * Yoshimura M. 2007. List of ants collected in Iwate Prefecture During the 49th Myrmecological congress of Japan. Ari 29: 41.