A new species assigned to Favartia Jousseaume, 1880, F. kanneri, is described from Isabela Island in the Galapagos Archipelago, Ecuador, and compared with two related species. The eight Favartia species living in this area are listed, referenced and illustrated.
This paper presents the first report of the green cellar slug Limacus maculatus (Kaleniczenko, 1851) from the Netherlands. Suspicions were raised after pictures of several specimens were put on the online data platform Waarneming.nl in November 2020 under the name of L. fl avus (Linnaeus, 1758), a similar species already known from the Netherlands. Further investigation of external and internal components revealed that the specimens indeed belong to L. maculatus. This article describes this first discovery of L. maculatus in the Netherlands and provides a thorough discussion of the anatomical characteristics.
Pisidium stewarti and Tibetoradix cf. hookeri, two species that are known to occur at conditions that nowadays prevail at high altitudes, are reported from Bhutan for the first time. The records mark the southeastern border of the known recent occurrences for both species.
A well-preserved muricid gastropod fauna is described from Wonosari, Gunung Kidul Regency, Special Region of Yogyakarta, Java, Indonesia. In the Muricinae subfamily, six species of Chicoreus are recorded, of which three species and one subspecies are new: C. (Triplex) javanus spec. nov., C. (T.) solidus spec. nov., C. (T.) martini spec. nov., C. (T.) altenai dekkersi subspec. nov., C. (T.) juttingae (Beets, 1841) and C. (Rhizophorimurex) cf. capucinus (Lamarck, 1822). A new species of Chicomurex is described: C. parvus spec. nov. Vokesimurex wanneri (Martin, 1916) is also recorded and a lectotype is designated herein for this species previously recorded from the early Miocene of Central Java. In the subfamily Aspellinae, Dermomurex (s.s.) wanneri nom. nov. is proposed for Murex acuticostatus Wanner & Hahn, 1935 (not Murex acuticostatus Gümbel, 1861), originally described from the early-middle Miocene of Central Java (Indonesia) and also found in Wonosari.
The name Neostromboidea Maxwell, Dekkers, Rymer & Congdon, 2019 (spelling corrected to Neostromboidae by Maxwell (2019)) is not available under iczn Article 11.7.1.1. Neostrombini Liverani, Dekkers & Maxwell, 2021 is a junior synonym of Canariini Dekkers, 2008. Eight other familygroup names introduced by Maxwell and co-workers are briefly discussed.
This paper reviews the Rissoinidae and Zebinidae collected during the Rumphius Biohistorical Expedition to Ambon, in 1990, with additional material collected by the second author (hls). In all, 30 species belonging to the family Rissoinidae and 12 species belonging to the family Zebinidae are recognised. The wellknown species are listed with a short synonymy and the poorly known species are redescribed in detail and illustrated. The biogeographical relationships of the rissoinid and zebinid fauna from Ambon are briefly discussed.
Repeated scuba diving visits to Saba, Caribbean Netherlands, from 2011 to 2020 allowed us to add 51 species of marine molluscs to the island’s species checklist, in an attempt to get closer to having a full list of all the species that live around the island. Th e new records include 40 gastropods (over half of which are sea slugs), seven bivalves, one scaphopod and three cephalopods. The records of the following species represent large increments in their geographic distributions: Anetarca piutaensis (Ortea, Caballer & Espinosa, 2003), Coryphellina hamanni (Gosliner, 1994), Cyphoma cassidyae Lorenz, 2020, Tenellia cf. luciae (Valdés, Medrano & Bhave, 2016), Elysia cornigera Nuttall, 1990, Felimare acriba (Ev. Marcus & Er. Marcus, 1967), Lomanotus phiops Er. Marcus, 1957, Okenia picoensis Paz-Sedano, Ortigosa & Pola, 2017, Polycera sp. 2 sensu Valdés et al. (2006), Thuridilla malaquita Ortea & Buske, 2014. The introduced nudibranch Doriprismatica sedna (Ev. Marcus & Er. Marcus, 1967) was also recorded; its presence on Saba in 2014 (and on St. Eustatius in 2015) is indicative of a rapid expansion in the Caribbean. All records are backed by photographs which were taken, in situ, by T.M. Zahner, and which have been uploaded to the online platform iNaturalist. This has the advantage of simultaneously making the information available to researchers and to the broader public.
The sister-families Streptaxidae and Diapheridae are reported from eastern Bhutan, with two and four species, respectively. The occurrence of the streptaxid Perrottetia theobaldi marks the northwestern limit of the genus Perrottetia. Gulella (Huttonella) bicolor is a widespread invasive species that might have its native range in Asia. Two of the four Sinoennea species that are reported from Bhutan, viz. Sinoennea bhucylindrica Gittenberger & Leda and Sinoennea nimai Gittenberger & Gyeltshen, are regarded as new to science. Perrottetia theobaldi, Sinoennea vara and maybe S. latens support the biogeographical link across the Brahmaputra between eastern Bhutan and the Khasi Hills in the Meghalaya state of India. Notes on three Sinoennea species occurring in the eastern Himalayan foothills, but not known from Bhutan, are added.
The South American brackish water snail Heleobia charruana (d’Orbigny, 1841), abundant in Uruguay, is newly recorded for three western European countries: the United Kingdom (2003), the Netherlands (2014) and Belgium (2017). Its identity was confirmed using morphological and molecular methods. The method successfully used to isolate DNA and to further amplify and sequence the full mitochondrial COI barcoding fragment from an old dry shell without damage is described in detail. A short synonymy with references to the main literature is presented. The species’ range and ecological data are reviewed for both South America and Europe and the implications of the finds are discussed.
One of the most productive malacologists in Europe in the latter half of the 19th century was the Swede, Carl Agardh Westerlund (1831–1908). Over 40 years he produced 70 papers, totalling some 5000 pages, in which he introduced hundreds of new names for Palaearctic land and freshwater molluscs. The main bulk of Westerlund’s collection, including types of many of the taxa introduced by him, is in the Gothenburg Natural History Museum. Smaller parts of the material can be found in various museums. His scientific library is housed in the Biomedicinska Biblioteket of the Gothenburg University Library, whereas correspondence, autobiographical notes, diaries, and unpublished manuscript drafts are stored in the Norrköpings Stadsarkiv (eight volumes). A catalogue of the 72 genus-group names introduced by Westerlund is given; Anotus Westerlund, 1883, and Eucampylaea Westerlund, 1876, have precedence over respectively Obscurella Clessin, 1889, and Josephinella F. Haas, 1936. Pupa edentula Draparnaud, 1805 is selected as type species for Columella Westerlund, 1878. The almost forgotten name Thaumasia Westerlund, 1903, is a synonym of Laevicaspia B. Dybowski & Grochmalicki, 1917. A bibliography is given of the malacological publications of Westerlund; special attention is given to publication dates. The author of Pupilla pratensis is Westerlund, 1871 (not Clessin, 1871). A rather unknown portrait of Westerlund is presented.
In spite of frequent and intensive checking by authors, editors and reviewer, a number of errors and omissions occur in the published version of the above paper, specified below, with many thanks to co-author Ronald Pouwer and reviewer Jaap van der Voort for their great help.