Geographic distribution and genital morphology of the genera Lozekia Hudec, 1970 and Kovacsia Nordsieck, 1993 (Mollusca, Gastropoda, Hygromiidae)

Abstract

Key Wordstranssilvanica transsylvanica deubeli kovacsi zoogeography Pannonicum Carpathicum dart-sac complex spermatophore AbstractThe Lozekia-Kovacsia species group comprises three species occurring in the Carpathian-Pannonian region, namely Lozekia transsilvanica (Westerlund, 1876), Lozekia deubeli (M. Kimakowicz, 1890) and Kovacsia kovacsi (Varga & L. Pintr, 1972). These species are known to be distinguishable by their genital morphology but, up to now, only a few populations have been examined anatomically. Due to their conchological similarity, distribution records that have been based on individuals of unknown anatomy are unreliable, and the ranges are far from being well defined. First we identified the type locality of L. transsilvanica and investigated the genital morphology of topotypical material in order to ensure the correct use of this name. Furthermore, we carried out a morphological analysis of Lozekia-Kovacsia material collected throughout the postulated range of this species group. Of the previously proposed species-specific features, the structure of the dart-sac complex and the number of digitiform glands were found to be the most reliable. Based on these genital characters, we re-defined the ranges of the three species; those of K. kovacsi and L. deubeli were found much larger than believed previously. Finally, we describe the morphology of the spermatophore of K. kovacsi, which was found in this species for the first time.

Phylogeny and phylogeography of theLozekia-Kovacsiaspecies group (Gastropoda: Hygromiidae)

“…In our opinion, however, two of these arguments can not be substantiated. First, a recent study has shown that the penial papilla of K. kovacsi is longer, but does not differ structurally from those of the other two species (Fehér et al. 2009).…”

“…This species group – i.e. the ‘ Lozekia– Gruppe’ in the sense of Nordsieck (1993) or the Lozekia–Kovacsia species group in the sense of Fehér et al. (2009)– comprises three conchologically similar, but anatomically well distinguishable species, belonging to two genera, viz.…”

“…The species group is distributed in the Carpathian‐Pannonian region, where the geographical ranges of the three species have been re‐defined recently (Fehér et al. 2009).…”

Kárpát-medencei adatok a Laciniaria plicata (Draparnaud, 1801) és az Alinda biplicata (Montagu, 1803) héjalaktanához, annak klímafüggéséhez (Mollusca, Clausiliidae)

“…A biometriát mindenekelőtt a fossziliák osztályozásánál használják, tekintettel arra, hogy lágy rész hiányában a genitáliák vizsgálatára, kemo-és molekuláris taxonómia módszerek alkalmazására nem mindig van lehetőség (Szöőr et al 1992, Fehér et al 2009). Természetesen, megfelelő feltételek esetén a biometria alkalmazható recens fajok, alfajok, formák, variánsok vizsgálatára, megkülönböztetésére is (Lupu 1966, Petro 1963, Domokos 1980, 1984, Shikov & Zatravkin 1991.…”

The first record of <i>Trochulus bielzi</i> (E. A. Bielz, 1860) in Hungary (Zemplén Mountains), with notes on the anatomy of some <i>Trochulus</i> species (Gastropoda: Pulmonata: Hygromiidae)

“…In some cases the genital features are more important than the shell characters. In several taxa, shells are insufficient for identifcation (HAUSDORF 2000, 2003, FEHÉR et al 2009). Exact measurements and proportions of the genitalia are widely used in the family (e.g.…”