Jozef Grego

Independent Researcher · no

Terranigra kosovica Radoman, 1978, was known from four localities in Kosovo. The monotypic genus was described on the basis of genital morphology. We collected T. kosovica at a new locality, about 40 km from its type locality. The shell morphology, as well as the soft part morphology and anatomy were identical to that described by Radoman. The mole...

The Caucasus ecoregion is one of the most important biodiversity hotspots in western Eurasia. Georgia is situated in the middle of this area, between the ranges of the Greater and Lesser Caucasus, a position providing exceptionally balanced environmental conditions for its flora and fauna. Animal groups of low mobility, such as land snails, are imp...

Since 2020, the southwestern Caucasus has been recognized as a hotspot of stygobiotic Mollusca diversity after revealing a large number of new, range-restricted species within the spring snail family Hydrobiidae, subfamily Sadlerianinae sensu Szarowska. Meantime, based on extensive material collected in the southwestern Caucasus during the last dec...

The Aciculidae is a family of terrestrial operculate snails with a western Palaearctic distribution. Historically three Acicula species were reported from the Caucasus Mountains, which represents the eastern edge of the family's distribution: A. limbata, A. moussoni and A. parcelineata, all from a few localities. We examined extensive material from...

The Southeast Asian genus Angustopila, currently comprising 13 nominal species, encompasses the world’s tiniest land snails. This work shows that there are far more species than previously suspected, and that this genus is in fact a very speciose group of tiny snails widely distributed in Southeast Asia. Angustopila is revised based on type materia...

Abstract of Book Chapter: Similar to other invertebrates, Mollusca have successfully adapted to both aquatic and terrestrial subterranean habitats resulting in a diversity of species filling numerous hypogean niches. Hypogean Mollusca are poorly known for most parts of the world. This book chapter examine the state of knowledge of subterranean Moll...

Kerkia is a snail genus inhabiting mainly subterranean waters. Live specimens of Kerkia were collected in the West Balkans. Mitochondrial cytochrome c oxidase subunit I and nuclear histone H3 were sequenced. Populations of Kerkia molecularly represented 10 mOTUs, each deserving a species rank. Apart from known species, five new species are describe...

A new species of Plectopylidae, Endothyrella prembudhai n. sp. is described from the Tinjura Dara mountain range in eastern Nepal. The new species is known from the holotype only, but its conchological characters clearly differ from all congeners reported from Nepal and Bhutan. A new locality of Endothyrella nepalica Budha & Páll-Gergely, 2015 is a...

Renea caucasica n. sp. and R. nemethi n. sp. are described from Georgia and northern Iran, respectively. Since the genus Renea has been reported from an area between south-eastern France and southern Albania, these two species extend the distribution of Renea eastwards enormously

Geoglomeris subterranea Verhoeff 1908 is a small (2–3 mm), blind, and depigmented representative of the order Glomerida, with a predominantly Western European distribution. Towards Central Europe (the Czech Republic, Austria), the species is found only sporadically, and its occurrence is documented by a small number of individuals. Recently, we doc...

The subterranean aquatic snails may serve as a model of endemism and isolation vs. migration in subterranean habitats. The aim of the present paper is to verify the hypothesis that subterranean aquatic snails can migrate through diverse subterranean habitats, applying four molecular markers as well as a RAPD technique and shell morphometry. They we...

www.europeanjournaloftaxonomy.eu 2021 · Haase M. et al. This work is licensed under a Creative Commons Attribution License (CC BY 4.0). R e s e a r c h a r t i c l e urn:lsid:zoobank.org:pub:264FC47B-9D2B-47F2-9461-F3A6CA5EB58B Abstract. During systematic surveys of groundwater snails in Slovakia, Hungary and Bosnia and Hercegovina two new species...

The minute valvatiform-shelled Hydrobiidae are less studied than other hydrobiid gastropods. In this paper, new data on these snails are presented, which have been collected at twelve springs in southern Greece: one in Boeotia, one on Evvoia Island, and ten on the Peloponnese Peninsula. Mitochondrial cytochrome oxidase subunit I (COI) and nuclear h...

The Clausiliidae species of India, Myanmar, Pakistan and Sri Lanka are mostly endemic and among the least stud�ied representatives of their family. Almost all of the available material of these taxa was collected before 1920 and is housed in the Natural History Museum, London. The present overview of this collection provides information on the orig...

The Balkan Peninsula is inhabited by the worldwide most diverse subterranean gastropod fauna. This fauna is still poorly studied, since its habitats are not easily accessible, and its sampled populations are mostly not rich in specimens’ numbers. Often only empty shells are known, but the shell is hardly useful, not only in phylogeny reconstruction...

Southeast Asian Clausiliidae in the collection of the Florida Museum of Natural History, and particularly those that were obtained during recent biodiversity surveys in Myanmar and Thailand, provide important new data on the mostly endemic species of the family in that region. This paper assesses the museum’s clausiliid material from continental So...

Nineteen new species of the alycaeid genera Chamalycaeus, Dicharax, and Metalycaeus are described from Thailand and Myanmar: Chamalycaeus buaboke Páll-Gergely & A. Reischütz, n. sp., C. erawan Páll-Gergely & Hunyadi, n. sp., C. hirpex Páll-Gergely & A. Reischütz, n. sp., C. irmatallus Páll-Gergely, n. sp., C. krabiensis Páll-Gergely & A. Reischütz,...

Minute caenogastropod brackish-water gastropods, formerly classified as Hydrobia , are important elements of the brackish-water fauna and were objects of intensive study for many years. Until now, five genera have been distinguished, most of them represented by a number of species, but rather indistinguishable without molecular data (cytochrome oxi...

Prosobranch Mollusca diversity of cave Vjetrenica and adjacent spring Lukavac is presented with relation to the Mollusca stygofauna of Popovo polje and Trebišnjica River Basin. The presented fauna supports the Vjterenica cave as a subterranean hotspot.

The stygobiotic genus Travunijana Grego & Glöer, 2019 is one of the typical elements of the subterranean freshwater fauna of the Trebišnjica River Basin in Bosnia and Hercegovina. The previous records of the genus suggested that its distribution was limited to the basin of the Trebišnjica River and adjacent parts of the southwestern Neretva Basin....

Recent field trips yielded valuable new information on the Clausiliidae of some little-researched regions of Myanmar, Thailand and central Vietnam. Indonenia admirabilis Grego & Szekeres sp. nov., Margaritiphaedusa grata Hunyadi & Szekeres sp. nov. and Phaedusa kazueae Hunyadi & Szekeres sp. nov. are introduced as new taxa, and occurrence records a...

Multidisciplinary, natural history monograph of Vjetrenica cave, a biodiversity hot-spot of Dinaric Alps.

The authorship, the identity and the origin of Cypraea bitou is clarified. Trivia candidula (GASKOIN, 1836) is revised. Two new Triviid species from the E Atlantic and Mediterranean Sea are described.

In this paper we describe two new species of the freshwater snails of genus Horatia . A new stygobiotic species of Horatia Bourguignat, 1887 is described from Izvor Beguša in Croatia. It occurs in sympatry with the crenobiotic H. klecakiana Bourguignat, 1887, but is morphologically and molecularly distinct. It is characterized by the terminal part...

Hispaniola as the second largest Island of the Greater Antilles host a remarkable mosaic biodiversity of terrestrial mollusca as a result of its turbulent natural history: repeated joining and separation of multiple sets of paleoislands. This resulted to the presence of Cuban, Jamaican and Portorican elements in the island fauna and flora, but also...

From recently received material Bathyptychia (Bathyptychia) zechuani n. sp., Dautzenbergiella (Dautzenbergiella) leekremeri n. sp., Dautzenbergiella (Dautzenbergiella) yanghaoi n. sp., Serriphaedusa (Serriphaedusa) tenuispira n. sp., Serriphaedusa (Gibbophaedusa) zhangqingae n. sp., and Synprosphyma yunlingi n. sp. are described as new taxa. Their...

High-spired South and Southeast Asian Streptaxoidea has been classified mostly in the Diapheridae, and partly in the Streptaxidae, and the systematic position of several of them has not been resolved yet. The examination of conchological characters and the analysis of the homologies of apertural barriers revealed that some new genera must be introd...

The position of the southwestern Caucasus as a stygobiotic Mollusca hotspot is confirmed. Molecular data of stygobiotic gastropods revealed the diversity of subfamily Sadlerianinae Szarowska, 2006, inhabiting the subterranean environment of Georgia. In addition to the well-known endemic genera Pontohoratia Vinarski, Palatov & Glöer, 2014 and Motsam...

The genus Plagigeyeria Tomlin, 1930 is one of the most typical elements representing the stygobiont fauna in the southern Dinaric Alps. In the current study I present the territory of Hercegovina (and its adjacent regions of Bjelašnica and the Dalmatian coast containing transboundary aquifers) as one of the two main biodiversity hotspots for distri...

Shells of the representatives of the genus Bracenica Radoman, 1973: B. spiridoni, B. vitojaensis and a new species, collected at the Kotor Bay (Montenegro) are presented. For the new species also the operculum (characteristic of the genus), penis and the female reproductive organs are described and figured. Considering the shell, operculum, and sof...

Examination of the holotype and newly collected specimens of Clostophis sankeyi Benson, 1860 (the only species of Clostophis Benson, 1860) from Myanmar revealed that it does not belong to the caenogastropod family Diplommatinidae, but to the “pulmonate” Hypselostomatidae. Montapiculus proboscidea Panha & Burch, 1999 from Thailand is a valid species...

Further, large sized taxa from the Eastern Pacific now assigned to the genus Pseudopusula FEHSE & GREGO, 2014 are revised. The first Triviid from temperate waters of the southern Hemisphere is described from Peru and named as Pseudopusula peruensis n. sp. Another taxon is described from the Galapagos Archipelago as Pseudopusula gerberi n. sp. The n...

Kontschania tetragyra n. gen. & sp. is described from central Laos, Khammouane Province. Kontschania n. gen. differs from the probably most closely related Notharinia by the truncated cone-shaped shell, open umbilicus with all whorls visible inside and the alternating low and high teleoconch ribs.

Kayahschistura lokalayensis, new genus and species, is described from Lokalay Loku Gu Cave, Kayah State, Myanmar. It is related with species of the genera Mustura, Pteronemacheilus, Physoschistura, Petruichthys and Rhyacoschistura, but cannot be placed in any of the presently named genera. It is distinguished by the absence of colour pattern, the e...

Seven new species of Sinoennea Kobelt, 1904, are described as follows: S. ljudmilena Páll-Gergely, new species, S. otostoma Páll-Gergely, A. Reischütz & Maassen, new species, S. angustistoma Páll-Gergely, A. Reischütz & Maassen, new species, S. infantilis Páll-Gergely & Grego, new species, and S. variabilis Páll-Gergely & Grego, new species (all fi...

We report on a new stygobiont truncatelloid gastropod from the sulfdic ponds of Tashan Cave in the Zagros Mountains of Southwest Iran. The hydrogen sulfde habitat resembles those hitherto known for gastropods from sulfde-rich caves in Romania, Italy and Greece. The newly described genus Trogloiranica n. gen. with a newly described T. tashanica n. s...

Abstract: Formosana renzhigangi n. sp. and Serriphaedusa (Gibbophaedusa) gerberi n. sp. are described from Yunnan Province of southern China. Additionally, new occurrence records of Papilliphaedusa kunmingensis (Chen et Zhang, 1999) are provided. The composition and diversity of Yunnan’s Clausiliidae fauna, its relation to those of the adjacent zoo...

Pseudopomatias phrunoi, new species is described from Myanmar’s Kayah State. It is characterised by a slender shell, strongly reflected peristome and three short internal plicae, situated circa half whorl behind the aperture. Vargapupa biheli viridis, new subspecies is described from Xianghouang Province, Laos, and characterised by weaker periumbil...

Five new species of Tonkinospira Jochum, Slapnik & Páll-Gergely, 2014 from Laos and Vietnam are described as follows: T. crassicostata Páll-Gergely & Grego, new species (Laos), T. danangensis Páll-Gergely & Hunyadi, new species (Vietnam), T. raxajacki Páll-Gergely & A. Reischütz, new species (Laos), T. suturata Páll-Gergely & Grego, new species (La...

Triviid shells and animals of the Florida Museum of Natural History are shown. These specimens will be used for the DNA research on Triviidae.

The four Bythinella species so far reported from Slovakia have been compared with a recently collected unknown species, described herein as new for science. Photos of the holotype and four paratypes in addition to the male copulatory organ are provided. All Bythinella spp. from Slovakia are depicted for comparison.

A new genus and species of hydorbiid gastropod is described from a small karst spring at the right bank of Trebišnjica River in Gorica near Trebinje in Hercegovina. The taxon is clearly distinguished by the unique morphology of its male copulatory organ.

Recently obtained mollusc samples provided valuable new information on the Clausiliidae of Laos, Vietnam, and China’s Yunnan Province. Grandinenia dautzenbergi abdoui Grego & Szekeres subsp. nov., Grandinenia muratovi Grego & Szekeres sp. nov., Oospira duci smidai Grego & Szekeres subsp. nov., Phaedusa micropaviei hmongorum Grego & Szekeres subsp....

"In our paper about stygobiont gastropod species from Yucatán State Mexico (Grego et al. 2019) we reported two new species provisionally placed in the family Cochliopidae: Mexicenotica xochii Grego, Angyal and Beltrán, 2019 and Pyrgophorus thompsoni Grego, Angyal and Beltrán, 2019. However, shortly after its publication, we realised the name Pyrgop...

During the field trips to Bosnia & Hercegovina and Montenegro in the years 2015-2018 we investigated the subterranean freshwater gastropod fauna in several karst springs. Five subterranean gastropod species new to science had been recorded within the collected material. Three of the new species are assigned to the family Moitessieriidae: Paladilhio...

The biospeleological investigations of several cenotes in the eastern region of Yucatán state, Mexico, during January 2018 yielded, among other invertebrates, two new truncatelloid gastropod species described herein as Mexicenoticaxochiigen. n. et sp. n. and Pyrgophorusthompsonisp. n. Both species represent the first record of stygobiont gastropod...

Sarajana apfelbecki (Brancsik, 1888) was assigned by Radoman to the monotypic genus, closely related to Belgrandiella Wagner, 1927. Later the distinctness of the genus Sarajana was questioned, and S. apfelbecki classified within the genus Belgrandiella. Our study on Sarajana from five localities in Bosnia and Herzegovina including Vrelo Bosne (type...

The family Moitessieriidae includes minute dioecious gastropods exclusively inhabiting subterranean waters, including thermal ones. Only empty shells were collected in most species, the vast majority of them are described from their gross shell morphology alone. Several visits to a site are usually required to obtain at least some living individual...

Triviella angushawkei n. sp. and Triviella korneli n. sp. are described from the late Eocene of Victoria, Australia. They are briefly discussed with related taxa.

Abstract: The extremely rich stygobiont malacofauna of the Balkans is still poorly studied, and the systematics is based mostly on shells whose characters are often misleading. An interesting stygobiont gastropod species was found in several springs feeding the Cetina River in the SW. part of Sinj Basin in Croatia. Its shell resembled the ones of m...

In February 2017 we investigated several caves and karstic springs in Laos for the presence of underground freshwater gastropod species. We report previously unrecorded freshwater gastropod assemblages in the largest cave in Laos, Tham Khon Dôn, and in the third largest cave, Pha Soung, in Khammouane Province, with single finds in Na Li Cave (Khamm...

In February 2017 we investigated several caves and karstic springs in Laos for the presence of underground freshwater gastropod species. We report previously unrecorded freshwater gastropod assemblages in the largest cave in Laos, Tham Khon Dôn, and in the third largest cave, Pha Soung, in Khammouane Province, with single finds in Na Li Cave (Khamm...

Based on recently collected Chinese material Tropidauchenia sulcicollis n. sp., Tropidauchenia yanghaoi n. sp., Synprosphyma ambigua n. sp., Synprosphyma segersi n. sp., Oospira yanghaoi n. sp., Formosana kremeri n. sp., Dautzenbergiella (Mansuyiella) paulae n. sp., Fuchsiana zhangqingae n. sp., Serriphaedusa (Gibbophaedusa) poppei n. subgen. n. sp...

From China Acanthophaedusa reductans n.sp., Bacillophaedusa annularis n. gen. n.sp., Cirrophaedusa plicilabris n. gen. n.sp., Distortiphaedusa imprimata n. gen. n.sp., Falsiluna harryleei n. gen. n.sp., Phaedusa (Metaphaedusa) matejkoi n.sp., Selenophaedusa diplochilus griffithsi n. subsp., Serriphaedusa boissieaui n.sp. , Synprosphyma yanghaoi n.s...

Three new species of Oospira Blanford, 1872, namely O. dancei Dharma & Szekeres spec. nov. (Lampung Province, Batukeramat), O. butoti Grego & Szekeres spec. nov. (Aceh Province, Ratawali), and O. acehensis Dharma & Szekeres spec. nov. (Aceh Province, Pantansile), are described from Sumatera, Indonesia. The zoogeographical affinities of these taxa a...

Review of all known species of the genus Rhodea (Subulinidae) and images of all existing types are presented. A new species of this gastropod genus from the mountains of South Colombia is introduced as Rhodea mariaalejandrae spec. nov., and another new species from Northern Colombia found in the ex Mousson collection is named Rhodea moussoni spec....

Freshwater gastropods of the Caucasus are poorly known. A few minute Belgrandiella-like gastropods were found in three springs in Georgia. Molecular markers: mitochondrial cytochrome oxidase subunit I (COI) and nuclear histone (H3) were used to infer their phylogenetic relationships. The phylogenetic trees placed them most closely to Agrafia from c...

During a field trip to the western part of the Balkan Peninsula in 2016, investigations of several caves and karstic springs revealed six new gastropod species living in subterranean waters and resulted in some noteworthy faunistic records. Five of the new species are assigned to the genus Paladilhiopsis Pavlović, 1913, namely P. prekalensis sp. n....

A new species of Triviidae from Galapagos Archipelago in the genus Cleotrivia is described as C. andreiae n. sp. The new taxon is briefly discussed with similar apparent species.

Cotyorica nemethi n. sp., one of the Tertiary relict western members of the geographically disjunct subfamily Phaedusinae, is described from Ordu Province of northern Turkey. It shows similarity to the species of the subterranean genera Graecophaedusa Rähle, 1982 and Nothoserrulina Németh & Szekeres, 1995 having high positioned lamellae inferior an...

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A short overview of subterranean Balkan hydrobid genera, with special focus on genus Bythiospeum Bourguignat, 1892 and Iglica A.J. Wagner, 1928 is given. In addition, based on recently collected material in Montenegro (Vitoja Spring) and Albania (Krumë), five new species are described, namely: Bracenica vitojaensis n. sp., Islamia montenegrina n. s...