Formica rufa

Formica rufa
Formica rufa worker
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Genus: Formica
Species:
F. rufa
Binomial name
Formica rufa

Formica rufa, also known as the red wood ant, southern wood ant, or horse ant, is a boreal member of the Formica rufa group of ants, and is the type species for that group, being described already by Linnaeus.[2] It is native to Eurasia, with a recorded distribution stretching from the middle of Scandinavia to the northern Iberia and Anatolia, and from Great Britain to Lake Baikal,[3][2] with unconfirmed reportings of it also to the Russian Far East.[3] There are claims that it can be found in North America,[4] but this is not confirmed in specialised literature,[3] and no recent publication where North American wood ants are listed mentions it as present,[5][3] while records from North America are all listed as dubious or unconfirmed in a record compilation.[6] The workers' heads and thoraces are colored red and the abdomen brownish-black, usually with dark patches on the head and promensonotum,[7] although some individuals may be more uniform reddish and even have some red on the part of the gaster facing the body.[2] In order to separate them from closely related species, specimens needs to be inspected under magnification, where difference in hairiness are among the telling characteristics, with Formica rufa being hairier than per example Formica polyctena but less hairy than Formica lugubris.[2] Workers are polymorphic, measuring 4.5–9 mm in length.[7] They have large mandibles, and like many other ant species, they are able to spray formic acid from their abdomens as a defence.[3] Formic acid was first extracted in 1671 by the English naturalist John Ray by distilling a large number of crushed ants of this species.[8] Adult wood ants primarily feed on honeydew from aphids. Some groups form large networks of connected nests with multiple queen colonies, while others have single-queen colonies.

  1. ^ Social Insects Specialist Group (1996). "Formica rufa". The IUCN Red List of Threatened Species. 1996: e.T8645A12924924. doi:10.2305/IUCN.UK.1996.RLTS.T8645A12924924.en.
  2. ^ a b c d Seifert, Bernhard (2021). "A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) – the famous mound-building red wood ants". Myrmecological News. 31: 133–179. doi:10.25849/myrmecol.news_031:133.
  3. ^ a b c d e Stockan, Jennie A. (2016). Wood Ant Ecology and Conservation. Cambridge University Press. p. 304. ISBN 9781107261402. Archived from the original on 2019-01-11. Retrieved 2022-10-23.
  4. ^ Robinson, William H. (2004). Urban Insects and Arachnids: A Handbook of Urban Entomology. Cambridge University Press. p. 247. ISBN 978-0521812535. Archived from the original on 2022-03-29. Retrieved 2022-11-28.
  5. ^ Jurgensen, Martin F.; Storer, Andrew J.; Risch, Anita C. (2005). "Red wood ants in North America". Ann. Zool. Fennici: 235–242.
  6. ^ "Antmaps.org - Formica rufa". Archived from the original on 2022-10-04. Retrieved 2022-10-23.
  7. ^ a b Collingwood, C.A. (1979). The Formicidae (Hymenoptera) of Fennoscandia and Denmark. Scandinavian Science Press LTD. p. 175. ISBN 978-90-04-27333-7. Archived from the original on 2022-10-23. Retrieved 2022-10-23.
  8. ^ Charles Earle Raven (1986). John Ray, naturalist : his life and works. Cambridge University Press. ISBN 978-0-521-31083-3.