Monatractides (Monatractides) stadleri (Walter, 1924)

Material examined.

Burdur • TR 19-2024 waterfall and outflow, 37.33291°N, 30.879221°E, 25 Apr. 2024, leg. Pešić, Zawal, Gülle & Gülle, 1 ♂ (sequenced), dissected and slide mounted (RMNH) .

Remarks.

The single male from southwestern Türkiye, molecularly analyzed in this study, matches the description of M. stadleri, a species widely distributed in the Mediterranean region, often very frequent in lowland running waters (Di Sabatino et al. 2010). The sequenced specimen was clustered within BOLD: AGC 6044 which, in addition to the specimen from this study, includes one specimen from Greece. The p - distance to the nearest BIN BOLD: AEN 9161, which includes specimens of M. corsicus from Corsica and Sardinia, was estimated at 8.14 %.

In the phylogenetic tree, the sequence obtained from the specimen from Türkiye was nested within clades of M. stadleri complex, as a sister clade (albeit with a low support) to M. corsicus Pešić & Smit, 2023, a species described from Corsica (Pešić and Smit 2023) and later reported from Sardinia by Pešić and Goldschmidt (2023). The status of the newly detected clade from Türkiye and Greece (BOLD: AGC 6044) as well the status of the previously detected clade from Balkans (Montenegro and Greece; BOLD: AEN 9161) should be left unnamed until the sequences of M. stadleri from its type locality are available.

Distribution.

Central, Western, and Southern Europe, Türkiye.