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Type: Article
Published: 2024-02-23
Page range: 570-576
Abstract views: 43
PDF downloaded: 13

Strumigenys emmae (Emery, 1890) (Myrmicinae) new to Britain, with an updated key to the known Strumigenys of the West Palaearctic

School of Biological Sciences; The University of Hong Kong; Kadoorie Biological Sciences Building; Pok Fu Lam Road; Hong Kong SAR; China
Department of Life Sciences; The Natural History Museum; London SW7 5BD
Hymenoptera Non-native ants Formicidae greenhouse cryptobiotic


The ant genus Strumigenys is a hyper diverse pantropical group of specialised predatory leaf litter dwelling ants. Species richness peaks within tropics, with few species extending into the West Palaearctic realm. A significant proportion of Strumigenys species known from the West Palaearctic are non-native, spread via human commerce, and predominately establishing populations within artificially heated greenhouses. In Britain, two Strumigenys species were previously known, S. rogeri Emery, 1890 and S. perplexa (Smith, 1876). Here we add a third species, S. emmae (Emery, 1890) based upon specimens from the humid tropical biomes at the Eden Project, Cornwall (UK). A single record outlined here is noted as the earliest known record of S. emmae from Europe thus far, pre-dating previous records by four years. We provide high resolution images, measurements, and discussion on the ecology of the species. In addition, an updated key to the Strumigenys of the Europe is supplied.



  1. Bolton, B. (1983) The Afrotropical dacetine ants (Formicidae). Bulletin of the British Museum (Natural History). Entomology, 46, 267–416.
  2. Bolton, B. (2000) The ant tribe Dacetini. Memoirs of the American Entomological Institute, 65, 1–1028.
  3. Bolton, B. (2023) An online catalog of the ants of the world. Available from (accessed 1 August 2023)
  4. Booher, D.B., Gibson, J.C., Liu, C., Longino, J.T., Fisher, B.L., Janda, M., Narula, N., Toulkeridou, E., Mikheyev, A.S., Suarez, A.V. & Economo, E.P. (2021) Functional innovation promotes diversification of form in the evolution of an ultrafast trap-jaw mechanism in ants. PLoS biology, 19 (3), e3001031.
  5. Booher, D.B., Gotelli, N.J., Nelsen, M.P., Ohyama, L., Deyrup, M., Moreau, C.S. & Suarez, A.V. (2023) Six decades of museum collections reveal disruption of native ant assemblages by introduced species. Current Biology, 33 (10), 2088–2094.
  6. Brown, W.L.Jr. (1949) Revision of the ant tribe Dacetini: III. Epitritus Emery and Quadristruma new genus (Hymenoptera: Formicidae). Transactions of the American Entomological Society, 75, 43–51.
  7. Deyrup, M. & Deyrup, S. (1999) Notes on introduced ant Quadristruma emmae (Hymenoptera: Formicidae) in Florida. Entomological News, 110, 13–21.
  8. Donisthorpe, H.S.J.K. (1908) Additions to the wild fauna and flora of the Royal Botanic Gardens, Kew: VII. I. Fauna. Hymenoptera. Formicidae (Ants). In: Bulletin of Miscellaneous Information. Royal Botanic Gardens, Kew, pp. 121–122.
  9. Donisthorpe, H.S.J.K. (1915) British Ants, Their Life History and Classification. Brendon & Son Ltd., Plymouth, 379 pp.
  10. Emery, C. (1890) Studii sulle formiche della fauna neotropica. Bullettino della Società Entomologica Italiana, 22, 38–80.
  11. Guénard, B., Weiser, M., Gomez, K., Narula, N. & Economo, E.P. (2017) The Global Ant Biodiversity Informatics (GABI) database: a synthesis of ant species geographic distributions. Myrmecological News, 24, 83–89.
  12. Hamer, M.T., Marquis A.D. & Gueìnard, B. (2021) Strumigenys perplexa (Smith, 1876) (Formicidae, Myrmicinae) a new exotic ant to Europe with establishment in Guernsey, Channel Islands. Journal of Hymenoptera Research, 83, 101–124.
  13. Hamer, M.T., Telfer, M.G. & Turner, C.R. (2023) Rediscovered after 102 years: Strumigenys rogeri Emery, 1890 (Formicidae; Myrmicinae) is rediscovered in Britain from the Eden Project, East Cornwall (VC 2). British Journal of Entomology & Natural History, 36 (4), 225–232.
  14. Janicki, J., Narula, N., Ziegler, M., Guénard, B. & Economo, E.P. (2016) Visualizing and interacting with large-volume biodiversity data using client-server web-mapping applications: The design and implementation of Ecological Informatics, 32, 185–193.
  15. Michlewicz, M. (2022) Strumigenys emmae (Emery, 1890) (Hymenoptera: Formicidae) in Poland – first record of this pantropic ant species from Europe with remarks on its biology. Annals of the Upper Silesian Museum in Bytom Entomology, 31, 1–5.
  16. Noordijk, J., Bloem, G.J. & Heijerman, T. (2021) First European population of the tropical ant Strumigenys emmae (Hymenoptera: Formicidae). Entomologist’s Monthly Magazine, 157, 211–214.
  17. Smith, F. (1876) Descriptions of three new species of Hymenoptera (Formicidae) from New Zealand. Transactions of the Entomological Society of London, 1876, 489–492.
  18. Tang, K., Pierce, M. & Guénard, B. (2019) Review of the genus Strumigenys (Hymenoptera, Formicidae, Myrmicinae) in Hong Kong with the description of three new species and the addition of five native and four introduced species records. ZooKeys, 831, 1–48.
  19. Tang, K.L. & Guénard, B. (2023) Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species. European Journal of Taxonomy, 907, 1–144.
  20. Tercel, M.P.T.G., Cuff, J.P., Symondson, W.O.C. & Vaughan, I.P. (2023) Non-native ants drive dramatic declines in animal community diversity: A meta-analysis. Insect Conservation and Diversity, 16 (6), 733–744.
  21. Wang, C., Sung, P.J., Lin, C.C., Ito, F. & Billen, J. (2023) Parthenogenetic Reproduction in Strumigenys Ants: An Update. Insects, 14, 195.
  22. Wetterer, J.K. (2012) Worldwide spread of Emma’s dacetine ant, Strumigenys emmae (Hymenoptera: Formicidae). Myrmecological News, 16, 69–74.
  23. Wong, M.K.L., Economo, E.P. & Guénard, B. (2023) The global spread and invasion capacities of alien ants. Current Biology, 33 (3), 566–571.