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RESEARCH ARTICLE
Contents Vol 38(3)

Enigmatic and extravagant genitalia in the spider genus Mastigusa (Araneae, Cybaeidae) – a taxonomic revision

Filippo Castellucci https://orcid.org/0000-0002-9944-2196 A B * , Andrea Luchetti https://orcid.org/0000-0002-2986-721X A and Nikolaj Scharff B
+ Author Affiliations
- Author Affiliations

A Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Selmi 3, I-40126 Bologna, Italy.

B Zoology Section, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark.

* Correspondence to: filippo.castellucci2@unibo.it

Handling Editor: Mark Harvey

Invertebrate Systematics 38, IS23047 https://doi.org/10.1071/IS23047
Submitted: 2 September 2023  Accepted: 21 February 2024  Published: 21 March 2024

© 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing.

Abstract

Mastigusa is a genus of small palearctic spiders that has recently been moved to the family Cybaeidae after the first inclusion of the genus in a phylogenetic matrix. Three species are currently recognised: M. arietina, M. lucifuga and M. macrophthalma. The status and delimitation, though, has always been problematic due to inconsistency in the characters used to discriminate between these, leading to great confusion in identity and distribution. We present a detailed morphological redescription of the genus and a taxonomic revision of the included species by the combined use of morphological data and molecular species-delimitation techniques based on the mitochondrial COI gene. The status of the three currently described species has been reevaluated and Mastigusa diversa was revalidated based on material from the Iberian Peninsula, North Africa and the United Kingdom. The distribution of Mastigusa species is updated based on novel taxonomic considerations, and comments on the natural history and ecological differences observed in the species are provided.

ZooBank: urn:lsid:zoobank.org:pub:AAD3FAED-440F-4295-B458-455B1D913F81

Keywords: Cybaeidae, DNA barcoding, integrative taxonomy, Mastigusa, morphology, phylogenetics, species delimitation, taxonomic revision.

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