Diversity hidden in nests: worldwide account of nidicolous silverfish (Insecta: Zygentoma)
摘要
The available information on nidicolous insects of the order Zygentoma (mainly those living in the nests or colonies of ants, termites, but also associated with other animals) is thoroughly revised. Most of the data comes from old, low-impact and non-digitized but equally valid sources. This work presents the first worldwide annotated checklist of nidicolous Zygentoma species, indicating their geographic distribution and host associations. The information provided in this checklist is analysed. A total of 611 associations involving 203 species (75 Lepismatidae and 128 Nicoletiidae) are accounted with 70.4% found with ants (more than 160 species), 26.4% with termites (more than 80), and 3.1% with other animals like wasps, birds, and mammals. Myrmecophiles (ant-associated silverfish) represent 48.5% of species, termitophiles (termite-associated) 39.1%, and nidicolous species 12.4%. Interestingly, Nicoletiidae silverfish are associated with a broader range of social insects than Lepismatidae, especially regarding termite associations. Geographic distributions are also different between silverfish families, with Lepismatidae more diverse in the northern hemisphere and Nicoletiidae in the southern latitudes; the existence of patterns is suggested, but the need for more sampling in underexplored regions is emphasized. Additionally, nearly 50 Zygentoma species not previously linked to social insects that could be nidicolous are also listed. The review of the available biological data suggest various types of interactions, including commensalism, parasitism, and mutualism, possibly pointing to independent evolutionary events. However, limited taxonomic, geographic, and biological knowledge complicates a thorough interpretation, highlighting the need for further research on silverfish diversity and their host interactions.