Oxus (Oxus) aff. angustipositus K. Viets, 1908

Material examined.

Portugal, Porto, Silveirinhos stream, 41.1727°N, 8.5007°W, 25.v.2022, leg. Jovanović, 1♂, 2♀ (sequenced; Table 1) .

Remarks.

The Portuguese specimen molecularly analyzed in this study matches the description of O. angustipositus . These individuals form a unique BIN (BOLD:AET9442), with the nearest neighboring BIN being OLD:AED9576, which consists of a specimen from Lake Ohrid, North Macedonia. The p -distance between the specimens from Portugal and GenBank O. angustipositus (Montenegro; OL870273, OL870215, OL870142, OL870101) is 8.7-9.3%; this demonstrates the need for taxonomic revision of the O. angustipositus complex for identifying possibly undescribed cryptic species.

Distribution.

Western Palaearctic.