Formica candida

Formica candida nests in the soil under stones and near grass roots. Chromosome number 2n=52 (Imai, 1969) - different from other species of subgenus Serviformica, which have 2n=54 (Japanese Ant Image Database).

Identification
Within Japan this species is distinguished from other Formica species by the sparsity of pubescence on the dorsum of its first gastral tergite. Long white hairs are often seen on the ventral side of the head.

Distribution based on Regional Taxon Lists
Oriental Region: India, Nepal. Palaearctic Region: Albania, Armenia, Austria, Belarus, Belgium, China, Democratic Peoples Republic of Korea, Denmark, Estonia, Finland, Georgia, Germany, Japan, Kyrgyzstan, Latvia, Lithuania, Luxembourg, Mongolia, Netherlands, Norway, Poland, Republic of Korea, Romania, Russian Federation, Slovakia, Sweden, Switzerland, Ukraine, United Kingdom of Great Britain and Northern Ireland.

Foraging/Diet
Formica candida collect honeydew. Novgorodova (2015b) investigated ant-aphid interactions of a dozen honeydew collecting ant species in Western Siberia pine and aspen-birch-pine forests (54°7´N, 83°06´E, 200 m, Novosibirsk) and mixed-grass-cereal steppes with aspen-birch groves (53°44´N, 78°02´E, 110 m, near Karasuk) in the Novosibirsk Region and coniferous forests in the northeastern Altai (north end of Lake Teletskoe, 51°48´N, 87°17´E, 434 m). All of the ants studied had workers that showed high fidelity to attending particular aphid colonies, i.e, individual foragers that collect honeydew tend to return to the same location, and group of aphids, every time they leave the nest. F. candida showed some specialization beyond this in larger colonies (<1,000 workers). Some ants specialized on attending specific aphid colonies and primarily guarding the aphids from potential enemies. F. candida tended Symydobius oblongus (Heyden) and Aphis craccivora Koch.

Nomenclature

 *  candida. Formica candida Smith, F. 1878b: 11 (q.) KYRGYZSTAN. [Smith's description is repeated by Bingham, 1903: 335 (footnote).] Probable synonym of picea Nylander: Emery, 1925b: 249. Junior synonym of picea Nylander: Dlussky, 1967a: 61. Hence candida first available replacement name for Formica picea Nylander, 1846a: 917 [Junior primary homonym of Formica picea Leach, 1825: 292 (now in Camponotus).]: Bolton, 1995b: 192. Valid species, not synonymous with picea Nylander: Seifert, 2004: 35. Current subspecies: nominal plus formosae.

Description
Worker

Seifert (2004): Mean size smaller than Serviformica average: CS 1.240 mm. Head and scape shorter than in the next related species, i.e. F. picea, F. gagatoides and F. kozlovi: CL / CW1.4 1.101, SL / CS1.4 1.010 (Tab. 2). Frontal triangle as shining as the adjacent surfaces. Cuticular surface of head, mesosoma and gaster, as result of strongly reduced pubescence and very weak microsculpture, very shining; a denser pubescence is usually developed only on propodeum and petiole. On dorsal surface of first gaster tergite, average distance of transverse microripples 7.7 µm (RipD) and of pubescence hairs 113 µm (PDG). Clypeus, procoxae, ventral parts of meso- and metacoxae and all ventral and dorsal gaster sclerites with quite numerous and very long erect setae. Seen in lateral profile, hind vertex with 3 - 7 and central vertex with 2 - 8 setae. Both sides of pronotum usually with 2 - 16 and of mesonotum with 1 - 9 long, erect setae. Propodeum and petiole scale only very occasionally with single short and weak setae. Flexor sides of both hind tibiae with a sum of 0 - 5 semierect to subdecumbent setae. Petiole scale variable, its dorsal margin in frontal view fully convex or with a straight or concave median part; scale in lateral view not very thick and with a tapering apex. An average colouration pattern is: head, mesosoma, coxae and gaster blackish brown; appendages lighter, mandibles light to dark reddish brown. Slightly lighter or darker specimens may occur.

For morphometric details of 117 worker specimens see Tab. 1

Smith (1878): Shining black; the mandibles, antennae, and legs ferruginous; the latter slightly fuscous above, as are also a few of the apical joints of the flagellum above. The head, the width of the thorax; the clypeus with a sharp central carina; the front area semiopaque; the mandibles stout, and with longitudinal punctures. The metathorax semiopaque, and with a fine cinereous pile, which also covers the squama, legs, and thorax on the sides and beneath. Abdomen oblong-ovate, very smooth and shining, and with a sprinkling of pale hairs at the apex; the extreme apex pale testaceous.

References based on Global Ant Biodiversity Informatics

 * Antonov I. A. 2013. Ant Assemblages (Hymenoptera: Formicidae) of Cities of the Temperate Zone of Eurasia. Russian Journal of Ecology 44(6): 523526.
 * Dubovikoff D. A., and Z. M. Yusupov. 2018. Family Formicidae - Ants. In Belokobylskij S. A. and A. S. Lelej: Annotated catalogue of the Hymenoptera of Russia. Proceedingss of the Zoological Institute of the Russian Academy of Sciences 6: 197-210.
 * Fowles, A.P. 1996. A provisional checklist of the invertebrates recorded from Wales. 2. Aculeate wasps, bees and ants (Hymenoptera: Aculeata). Countryside Council for Wales
 * Gratiashvili N., Barjadze S. 2008. Checklist of the ants (Formicidae Latreille, 1809) of Georgia. Proceedings of the Institute of Zoology (Tbilisi) 23: 130-146.
 * 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.
 * Kim B.J. 1996. Synonymic list and distribution of Formicidae (Hymenoptera) in Korea. Entomological Research Bulletin Supplement 169-196.
 * Lelej A. S. 2012. Annotated catalogue of the Insects of Russian Far East. Volume 1. Hymenoptera. Dalnauka: Vladivostok. 635 p.
 * Liu X. 2012. Taxonomy, diversity and spatial distribution characters of the ant family Formicidae (Insecta: Hymenoptera) in southeastern Tibet. PhD Thesis 139 pages
 * Liu X., Z. H. Xu, X. Y. Zhou, N. N. Yu, and C. L. Zhang. 2011. Ant communities of West slope of Mount Demula and Bomi Valley in Southeastern Tibet. Forest Research 24(4): 458-463.
 * Liu X., Z. Xu, C. Zhang, N. Yu, and G. Xu. 2012. Distribution patterns of ants from West slope of Mount Demula and Bomi Valley in Southeastern Tibet. Journal of Northwest Forestry University 27(4): 77-82.
 * Liu X., Z. Xu, X. Zhou, N. Yu, and C. Zhang. 2011. Ant Communities of West Slope of Mount Demula and Bomi Valley in Southeastern Tibet. Forest Research 24(4): 458-463.
 * Liu X., Z.-H. Xu, C.-L. Zhang, N.-N., and G.-L. 2011. Distribution patterns of ants from West Slope of Mount Demula and Bomi Valley in southeastern Tibet. Journal of Northwest Forestry University 27(4): 77-82.
 * Mo F., Z. Xu, Y. Song, C. Li, and Q. He. 2015. Ant communities in Yadong section of Mt. Himalaya. Journal of Nanjing Forestry University 39(3): 85-90.
 * Petrov I. Z., B. Petrov, D. Milicic, T. Karan-Znidarsic. 2007. Contribution to the Myrmecofauna (Hymenoptera: Formicidae) of East and South Serbia. Acta Zoologica Bulgarica 59(3): 295-299.
 * Radchenko, A. 2005. Monographic revision of the ants (Hymenoptera: Formicidae) of North Korea. Annales Zoologici (Warsaw) 55: 127-221.
 * Radchenko, A. 2005. Monographic revision of the ants (Hymenoptera, Formicidae) of North Korea. Annales Zoologici 55(2): 127-221.
 * Ran H., and S. Y. Zhou. 2012. Checklist of chinese ants: formicomorph subfamilies (Hymenoptera: Formicidae) II. Journal of Guangxi Normal University: Natural Science Edition 30(4): 81-91.
 * Schultz, R., A. G. Radchenko, and B. Seifert. "A critical checklist of the ants of Kyrgyzstan (Hymenoptera: Formicidae)." Myrmecologische Nachrichten 8 (2006): 201-207.
 * Seifert, B.. "The "Black Bog Ant" Formica picea Nylander, 1846 a species different from Formica candida Smith, 1878 (Hymenoptera: Formicidae)." Myrmecologische Nachrichten 6 (2004): 29-38.
 * Shlyakhtenok A. S. 2007. Hymenoptera Aculeata of Raised Bogs in Belarus. Entomological Review 87(2): 136147.
 * Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.
 * Terayama. M. 2004. Geological and ecological distribution of Japanese ants communities. (translated from Japanese) Reports of the Saitama Prefecture Animal Research Association. 48:24
 * Tie Ru, and Xu Sheng-quan. 2005. Ant species list in central part of Mt Qinling. Sichuan Journal of Zoology 24(1): 46.
 * Vesni? A. 2011: Revidirani sistematski prijegled mrava Bosne i Hercegovine. Unutar : S. Lelo (urednik),  Fauna  Bosne  i  Hercegovine    Biosistematski  pregledi.  7.  izmijenjeno  i popravljeno interno izdanje Udruenja za inventarizaciju i zatitu  ivotinja, Ilija, Kanton Sarajevo, pp: 205-207.
 * Xia Yongjuan, and Zheng Zhemin. 1997. A survey of Formicidae form Xinjiang. Journal of Shaanxi Normal University 25(2): 64-66.
 * Xu Z., J. Chu, C Zhang, and N. Yu. 2011. Ant species and distribution pattern in Gongbo Nature Reserve in Southeastern Tibet. Sichuan Journal of Zoology 30(1): 118-123.
 * Xu Z., J. Chu, C. Zhang, and N. Yu. 2011. Ant Species and D istribution Pattern in GongboNature Reserve in Southeastern T ibet. Sichuan Journal of Zoology 30(1): 118-123.
 * Yoshimura M., T. Hirata, A. Nakajima, and K. Onoyama. 2003. Ants found in scats and pellets taken from the nests of the Japanese Wryneck Jynx torquilla japonica. Ornithol. Sci. 2: 127-131.
 * Yu N., Z. Xu, C. Zhang, J. Chu, B. Yang, and X. Liu. 2011. Distribution patterns of ant species from Mount Sejila, southeastern Tibet. Journal of Beijing Forestry University 33(5): 75-80.
 * Yu N., Z. Xu, C. Zhang, J. Chu, B. Yang, and X. Liu. 2011. Distribution patterns of ant species from mount Sejila, southeastern Tibet. Journal of Beijing Forestry University 33(5): 75-80
 * Zhang C., Z. Xu, N. Yu, Q. He, and X. Liu. 2012. Distribution Patterns of Ant Species on East Slope of Mount Demola and Zayu Valley in Southeastern Tibet. Journal of Northeast Forestry University 40(3): 87-92
 * Zhigulskaya Z. A. 2009. The ants of the Chuya Depression and the Yustyd river basin in Southeastern Altai. Contemporary Problems of Ecology 2009 2(3): 210-215.