Taxonomic revision of the highly threatened Eumerus tricolor species group (Diptera: Syrphidae) in Southeast Europe, with insights into the conservation of the genus Eumerus

Abstract

aff. torsicus). Two species subgroups are also defi ned: E. bactrianus subgroup in the E. strigatus group (Grković et al., 2019a; Smit et al., 2020) and E. binominatus subgroup in the E. tricolor group (Grković et al., 2019b). The E. tricolor group, as defi ned by Chroni et al. (2017) based on COI mtDNA data and Grković et al. (2017) who provided a morphological diagnosis, includes a wide spectrum of species, but is clearly separated from other species groups by a set of unique apomorphic characters (radially striated basofl agellomere with clearly bounded fossette, katepisternum completely pilose and poorly developed anterior lobe on male epandrium). Most species of the E. tricolor group are characterized by partially or completely red abdominal

Integrative taxonomy of the Merodon aberrans (Diptera, Syrphidae) species group: distribution patterns and description of three new species

“…Merodon hamifer was found to be more divergent from the two other species of the M. aberrans group on the basis of the coi tree topology, and also considering the unique morphological characters possessed by this species. These results were not surprising, given that congruence between molecular data and morphological characters for morphologically well-defined species in the taxonomic studies of syrphid species is often standard (Vujić et al, 2012(Vujić et al, , 2018(Vujić et al, , 2020bChroni et al, 2017;Kočiš Tubić et al, 2018;Radenković et al, 2018aRadenković et al, , 2018bRadenković et al, , 2020Grković et al, 2021), although some conflict between these two sources of data was also detected (Vujić et al, 2020a). Additionally, we have to emphasize our observation that the samples of the M. flavitibius species from Iran revealed molecular similarity to the flavitibius samples from Georgia.…”

Two new species of the genus Eumerus Meigen, 1822 (Diptera: Syrphidae) from Central Asia

“…Eumerus Meigen, 1822 is one of the largest genera of Palaearctic Syrphidae (Stackelberg, 1961;Peck, 1988;Speight, 2017). Most of known species are distributed in Central Asia and the Mediterranean, from where a lot of new species were described recently (Grković et al, 2015;Grković et al, 2017;Mutin, 2019;Grković et al, 2019а, b;Barkalov, 2020;Barkalov et al, 2020;Gilasian et al, 2020;Grković et al, 2021). In this paper the descriptions of two new species from Central Asia from the Eumerus tricolor group are given.…”

“…In this paper the descriptions of two new species from Central Asia from the Eumerus tricolor group are given. The position of the new species is considered among Palaearctic congeners (Stackelberg, 1961), as well as the European species of Eumerus tricolor group (Grković et al, 2021) and Iranian species of the same group (van Steenis et al, 2017).…”

An overlooked case for a century: taxonomy and systematics of a new Iberian species of Eumerus Meigen, 1822 (Diptera, Syrphidae)

“…On the other hand, the ubiquity of the new species suggests that the larvae depend on a widespread plant species in the Iberian Peninsula or they are polyphagous. Despite the availability of large amounts of data on the Syrphidae in Europe (Speight et al 2020) and the number of recent publications on the taxonomy of Eumerus (e.g., Chroni et al 2018;Grković et al 2021;Speight et al 2021), E. colladoi sp. nov. had not been unrevealed so far.…”