Anthomyza gilviventris in Palaearctic Region: integrative taxonomy, variability and habitat associations of North European population (Diptera: Anthomyzidae)
Roháček Jindřich , Hellqvist Sven, Špalek Tóthová Andrea
Acta Entomologica Musei Nationalis Pragae 64(2): 277-291, 2024
Published online: 31st October 2024
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Abstract: Anthomyza gilviventris Roháček & Barber, 2016, hitherto known only from
the Nearctic Region, is recorded from the Palaearctic Region (NE Sweden) for the
first time. Specimens from the Swedish population have been compared with those
of A. gilviventris from Canada and the USA and those of A. tschirnhausi
Roháček, 2009 from the Kamchatka Peninsula (Far East of Russia). Both
morphological and molecular analyses (BI and RAxML, based on seven DNA markers:
12S, 16S, 28S, COI, COII, CytB, ITS2) confirmed that the Swedish specimens
belong to A. gilviventris. Because no specimen of A. tschirnhausi has been
available for molecular study, the most diagnostic morphological characters used
for separation of this species from A. gilviventris have been re-evaluated with
respect to Swedish specimens, and their variability discussed. However, these
differences, although stable, are relatively small and, consequently, the
possibility that they fall within the limits of a single variable species has
not been entirely eliminated. New biological information (habitat and host-plant
associations) on the Swedish population of A. gilviventris is presented.
Key words: Diptera, Anthomyzidae, Anthomyza tschirnhausi group, biology, distribution, DNA sequences, morphology of terminalia, taxonomy, Sweden, Palaearctic Region