Arrenurus (Arrenurus) szalayi Lundblad 1954

Arrenurus (Arrenurus) szalayi Lundblad, 1954 Material examined. Portugal, Beja • Mértola, Moinho de Alferes 1, 37.502°N, 7.69°W, 19 May 2023, leg. Ferreira, Benitez-Bosco, Ekrem, Stur & Turaccio, 2 ♂ incl. one juv., (both sequenced). Remarks. The examined males from Moinho de Alferes match the description of A. szalayi, a species originally described from Ribeira d’Odivelas in Portugal (Lundblad 1956). The sequenced specimens from Portugal clustered within one BIN (BOLD: ACS 0403), which in addition to the specimens from Portugal, includes a number of specimens collected from a large geographic area, from Norway to South Africa and from the Netherlands to Kyrgyzstan, and that are morphologically assigned to A. bicuspidator Berlese, 1885, or to A. radiatus Piersig, 1894. From both species, A. szalayi, at least morphologically, can be easily separated by the characteristic shape of the male petiole (see Lundblad 1956: fig. 161 A). Further research is needed to understand the factors behind this grouping and the implication of this lack of genetic differentiation between three morphological different species. Distribution. Portugal; previously reported from Ribeira de Odivelas, Alentejo (Lundblad 1954, 1956).