Holandriana holandrii

7. Holandriana holandrii (C. Pfeiffer, 1828)

Findings in Serbia.

Melania holandri: Möllendorff (1873).

Amphimelania holandrii: Hesse (1929); Jaeckel et al. (1958); Jovanović (1990, 1995, 1998); Arambašić (1994); Reh et al. (1997); Karaman (2001); Paunović et al. (2005); Živić et al. (2005); (2006); Karaman & Karaman (2007); Novaković et al. (2013).

Holandriana holandrii: Karaman (2005); Marković et al. (2012, 2013, 2015); Novaković (2012, 2013, 2015–2018 pers. comm.); Živić (2020).

Morphology. Medium-sized snails (ovate-conical, thick-walled shell up to 20 mm high). Shell is yellowish or greenish, usually with colour bands. It has 5 slightly convex whorls with few ribs as decoration. Apex is pointed, aperture is higher than broad. For more details see Glöer (2019: 85, fig. 86).

Distribution and ecology. The species is inhabiting solid substrate (rocks, wood) in rivers, streams or standing waters of the Balkan Peninsula and Pannonian Plain. In Serbia, it is one of the most common species in the central and southern parts of the country (hilly-mountainous region). Recent findings in the Pannonian parts are scarce and related mostly to the Danube Iron Gate (Arambašić 1994); Paunović et al. 2005; Karaman & Karaman 2007; Marković et al. 2012). A few findings from the Sava (Zasavica, Mitrovica, and Ostružnica) and Tisza (Titel) Rivers are presented in Karaman & Karaman (2007), while Novaković (2015–2018 pers. comm.) has recorded it in the Kolubara and Jadar Rivers.

Other remarks. The species was considered as a member of Melanopsidae, till the recent genetic analyses have proved it as an outgroup. Neiber & Glaubrecht (2019) estimated the group has been evolving separately from the late Mesozoic in the SE Europe region. On the IUCN Red List of threatened species, it has been assessed as LC (Tomović et al. 2011).