Six new non‐native ants (Formicidae) in the Canary Islands and their possible impacts

Abstract

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Three new exotic species of ants (Hymenoptera, Formicidae) for Madeira, with comments on its myrmecofauna

“…All three species are exotics. Furthermore, the three have been recorded from the nearby Canary Islands (Seifert 2003;Staab 2009;Espadaler and Fernández 2014;Hernández-Teixidor et al 2020) and therefore, their presence is not unexpected. Pheidole navigans is also reported to be spreading across the Southeastern United States (Sarnat et al 2015) and the records from Macaronesia represent part of a more general expansion of the species.…”

“…It was identified as a member of the flavens-complex, but couldn't be identified to species level due to the lack of majors. Two Pheidole species from the flavens-complex were recently recorded from Tenerife in the Canary Islands: P. navigans and Pheidole bilimeki Mayr, 1870(Hernández-Teixidor et al 2020. We thus suspected that the Madeira specimens belonged to one of these species.…”

The destructive subterranean termite Reticulitermes flavipes (Blattodea: Rhinotermitidae) can colonize arid territories

“…The Canary Islands have a subtropical climate with relatively constant mild temperatures year-round. This stability facilitates the establishment of many introduced species and their expansion throughout the archipelago, as occurs with other social insects ( Hernández-Teixidor et al, 2020 ). However, Lanzarote is the most arid island of the archipelago ( Tejedor, Jiménez & Díaz, 2003 ) and its habitats should not be so appropriate for this subterranean species.…”

Acute toxicity of fipronil to an invasive ant, <i>Lepisiota frauenfeldi</i>

“…frauenfeldi is a notorious and serious environmental pest, which eats, kills, and displaces not only native ant species, but also various other invertebrates in the infested area. 26,27) Additionally, it can negatively impact agricultural and horticultural activities via "ant-Sternorrhyncha (particularly, scale insects which are one of the major agricultural pests) mutualisms". 26) This mutualism has been found to exert a wide range of effects on arthropods, and it also eventually affects plant health.…”