Daniel C. Cavallari

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• Master of Science
• Laboratory Technician at University of São Paulo

In the present study, Calliostoma melliferum sp. nov. is described from Canopus Bank, a seamount located ~190 km off Fortaleza, Ceará, northeastern Brazil, at depths of 60–260 m. Shell morphology and anatomy of the soft parts are analyzed in detail with the aid of SEM and micro-computed tomography (CT-Scan) techniques. We take the opportunity to pr...

The magician tree snail, Drymaeus magus, is an obscure species that has fallen into oblivion. It has been regarded as a ‘long-lost species’ and barely figured in malacological research since its original description in the early 19th century. Through a comprehensive taxonomic review, we reveal that this species is common and widespread in southeast...

Since 1995, the spread of the green mussel Perna viridis(L.) along the South American coast has raised concerns about its potential impacts on coastal communities in vulnerable areas. This study provides updated occurrence records of P. viridis along the Brazilian coast and assesses its presence within marine protected areas. Species identification...

Although terrestrial gastropods are remarkably diverse, our knowledge of them is still lacking, especially for species from the Global South. As such, new tools to help researchers collect data on these organisms are very welcome. With this in mind, we investigated Brazilian observations on iNaturalist to assess the feasibility of the data availabl...

The expression ‘you need to know to conserve’ is a well-known cliche among biologists. Documenting the richness of a group of organisms is the first step towards understanding biodiversity and preparing efficient conservation plans. In this context, many efforts have been made to quantify the number of species on Earth and estimate the number of sp...

The present 3D dataset contains the 3D models analyzed in the publication: Rosa, R. M., Salvador, R. B., & Cavallari, D. C. (2025). The disappearing act of the magician tree snail: anatomy, distribution, and phylogenetic relationships of Drymaeus magus (Gastropoda: Bulimulidae), a long-lost species hidden in plain sight. Zoological Journal of the L...

Land-snail inventory suffers many gaps in knowledge, especially in countries of the Global South such as Brazil. Studying undersampled regions and providing data on species distributions are among the most pressing matters in Brazilian malacology. Here, we study a sample of land snails collected in the Central-West region of Brazil (“Midwest”) hous...

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian mega...

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian mega...

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian mega...

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classification. In this context, the B Brazilian meg...

We compiled taxonomic information about terrestrial gastropods in Brazil in an organized and user-friendly checklist that we hope will be useful for researchers and stakeholders alike. We also expect that it will serve as a springboard, garnering more interest and enabling a new wave of studies on this fauna, which has one the highest extinction ra...

In 2022, we published an article in this journal entitled “Cave-dwelling gastropods (Mollusca: Gastropoda) of Brazil: state of the art and conservation”. In that study, we compiled all the available information about cave-dwelling gastropods in the country, including terrestrial and freshwater species. We focused on the troglobites but also include...

The reduced temporal validity of species lists made available in a traditional manner in scientific publications has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent the up-to-date knowledge of all species and classifications. The Catálogo Taxonômico da Fauna do Brasil (CTFB), made publ...

Catálogo Taxonômico da Fauna do Brasil: se ng the baseline knowledge on the animal diversity in Brazil

O livro que estão prestes a conhecer é exatamente sobre a possibilidade de ver, ouvir e principalmente reconhecer um conjunto expressivo de aves, de 203 espécies, pertencentes a 56 famílias, fotografadas no câmpus ou arredores, desde há aproximadamente 20 anos. Aves no Câmpus da USP em Ribeirão Preto é um guia fotográfico, de autoria de especialist...

The superfamily Orthalicoidea comprises approximately 2,000 species of terrestrial gastropods, mostly concentrated in the Neotropics but also present in southern Africa and Oceania. We provide a multi-marker molecular phylogeny of this superfamily, reassessing its family- and genus-level classification. We exclude two families from the group, Odont...

In an ongoing study on deep-water Vetigastropoda from SE-NE Brazil, the remarkably similar appearances of two supposedly unrelated species drew our attention. The description of Calliostoma frumari García, 2007 was based on four empty shells collected 37 km off Key West, Florida Keys, USA, by a private expedition. Watson’s (1879) description of Bas...

The exotic Japanese jumping snail, Ovachlamys fulgens, was first recorded in Santa Catarina state, Brazil, in 2013. Based on data gathered from the literature, natural history collections, field samplings, and the iNaturalist platform, we assess its current distribution in the country. Our data show that the jumping snail has had a dramatic range e...

An up-to-date list of exclusively cave-dwelling gastropod species recorded in Brazil is presented including updated taxonomy, detailed geographic information, and illustration of types. The list includes 18 cave-exclusive (troglobitic) gastropods encompassing 15 land and three freshwater species, with the status of further species pending additiona...

There is broad recognition by practicing taxonomists that the field is going through a crisis, which has been dubbed the “taxonomic impediment”. There are many aspects involved in said crisis, but publication practices in taxonomy are often neglected or relegated to the backseat. We provide an initial foray into this topic via a worldwide survey wi...

Fernando de Noronha (henceforth ‘Noronha’) is an oceanic archipelago of volcanic origin, located ~350 km off the northeast coast of Brasil (Fig. 1). The eponymous main island was an important midway port in the Portuguese exploitation of Brasilian resources during the 16th and 17th centuries (Lins & Silva, 2013). The island was also briefly occupie...

Stramonita brasiliensis Claremont & D. Reid, 2011 (family Muricidae) is an intertidal snail species reported from the southern Caribbean to Brazil, recently separated from the Stramonita haemastoma complex. We report here a specimen of S. brasiliensis that is much larger than the average size of 75 x 52 mm (Rios 2009, referred to as S. haemastoma)...

Megalobulimus dryades sp. nov. is described from the Atlantic Forest in the Vale do Ribeira region, in the states of Paraná and São Paulo, S-SE Brazil, based on morphology. Representatives of the new species with white peristome and glossy periostracum have been misidentified as Megalobulimus gummatus (Hidalgo, 1870) since the 19 th Century. The tr...

Samples of terrestrial gastropods were collected year-round in seven caves in Presidente Olegário municipality, Minas Gerais state, southeastern Brazil, during several expeditions from 2012 to 2014. Twenty-four taxa (plus a single freshwater species), mainly stylommatophorans, were found in the material. The following species are reported for the f...

Good science communication should give the public the tools to make informed decisions and take action, which can be particularly important for nature conservation. The crisis in invertebrate conservation might be rooted in public prejudices against invertebrate animals, which are perceived as the unpopular 97% of Earth’s animal biodiversity. As su...

The Brasilian territory is very extensive and harbors ~20,000caves, over half of which are calcareous (Fig. 1; CECAV, 2020). A reduced number of the ~ 700 terrestrial and nearly260 freshwater gastropod species reported from Brasil (Simone, 2006; Birckolz et al., 2016; Salvador, 2019) inhabit cave environments exclusively. Since the description of t...

The genus Habeastrum Simone, 2019 was recently described based on empty shells, counting with two troglobite species. Concho-logical features allowed a preliminary classification in the caenogastropod family Diplommatinidae, but this family allocation was left open to future studies. Herein, we present a detailed anatomical study of newly acquired...

In the Pokémon franchise, crustaceans play an important role, having inspired some of the coolest monsters out there. The goal of this article is to present the crustacean-based Pokémon, discuss their real-world inspiration and explain a little bit about their biology. We outline specific features of the real animals that were transported to the ga...

Several deep-water mollusks collected during the Marion Dufresne MD55 expedition off SE Brazil have been studied in recent papers. The present work focuses on eight species belonging to the cerithioidean families Cerithiidae, Litiopidae, Modulidae and Planaxidae. Three species have their geographic distributions greatly expanded: Bayericerithium ba...

We report the first Brazilian record of Leiostracus demerarensis (L. Pfeiffer, 1861) from Pará and Maranhão states. The distribution of this species now comprises Guyana, Suriname, French Guiana, and northern Brazil. Furthermore, given the uncertainty in generic and familial allocation of this species (either Bostryx Troschel, 1847, Bulimulidae, or...

Herein, we present a taxonomic revision of the genus Polygyratia Gray, 1847, with a new systematic placement in Scolodontidae and containing only the species Polygyratia polygyrata (Born, 1778). We offer an updated morphological description and geographical distribution, based on museum specimens and occurrence data gathered from literature and onl...

Supplementary file from the article: https://zse.pensoft.net/article/51047/

Construction of water diversions is a common response to the increasing demands for freshwater, ofte resulting in benefits to communities but with the risk of multiple environmental, economic, and social impacts. Water-diversion projects can favor massive introductions and accelerate biotic homogenization. This study provides empirical evidence on...

Macrocypraea mammoth is a new species from Trindade, a remote oceanic island located 1160 km off Espírito Santo, Brazil. This isolated species is described in a detailed morphological scenario that includes all Recent congeneric species. The detailed anatomy of two Recent species, M. zebra and M. cervinetta, were described in a previous paper. The...

The genus Hyperaulax Pilsbry, 1897 comprises two living species endemic to the oceanic Fernando de Noronha Archipelago, off north-eastern Brazil. They are currently allocated in two subgenera, Hyperaulax s. str. and Bonnanius Jousseaume, 1900, belonging to the family Odontostomidae. Herein we present a taxonomic revision of these species, assessing...

The deep-water mollusks collected during the Marion Dufresne (MD55) expedition to the southeastern Brazilian coast in 1987 have been studied in several recent works. The present paper lists and diagnoses 19 species belonging to the vetigastropod families Calliostomatidae, Colloniidae, Margaritidae, and Solariellidae. A new species, Calliostoma valk...

Science communication and public outreach are of utmost concern for malacologists working in conservation. However, malacology – and invertebrates in general – is often a difficult topic for science communicators to approach. Molluscs may be less interesting or less appealing to non-expert audiences than larger, more attractive vertebrates, but man...

New records for Helicina schereri Baker, 1913, are reported. It was a species previously restricted to the states of Ceará, Rio Grande do Norte, Paraíba, Alagoas and Tocantins in Northeastern Brazil, and State of Santa Catarina, much fur-ther south. The new occurrences reported herein fill distribution gaps and also significantly expand the range o...

The taxonomic position of Engonioplws unicindus (Say, 1826) in the family Nassariidae is comfirmed based on morphological results. Our detailed anatomical analysis reveals some disparities with typical nassariids, e.g., having a non-serrated operculum, a simpler and proportionally smaller head, and the absence of epipodial tentacles. However, the s...

The deterioration of specimens in natural history collections is a major concern of curators. Collections containing carbonatic specimens (e.g., molluscs, corals, fossils) are of special concern, since calcium carbonate (CaCO 3 ) can deteriorate in the presence of acidic vapours. There are two main types of danger related to these volatile acids, c...

Arene lychee sp. nov. is described from Canopus Bank, a seamount located ~190 km off Fortaleza, Ceará, NE Brazil (02°14'25"S, 38°22'50"W), based on shell morphology. The species is characterized by a large, trochiform shell; color ranging from intense reddish to white (darker on spiral cords, lighter at base) with a yellow apex; sculpture of 3-8 wi...

A sample of land and freshwater snails, mainly pulmonates, was recently collected in caves in Goiás and Bahia states, Brazil. Twenty-one species were found in the material. The following species are reported for the first time for Goiás state: Cecilioides consobri-na (Ferussaciidae), Dysopeas muibum and Stenogyra octogyra (Subulinidae), Entodina je...

A list of Brazilian terrestrial and freshwater gastropod species and genera described from 2006 to 2016 is presented, updating the previous catalog of SIMONE (2006). Colored photographs of type specimens, as well as information on type material, distribution and taxonomy are also provided. The list encompasses 42 recently described species, largely...

The Mollusca Collection of the University of São Paulo Museum of Zoology is a century-old assemblage, possibly one of the largest in Latin America, reaching a total of 123,000 lots and over 1.2 million specimens. Its coverage in terms of geography and biodiversity encompasses the entire Brazilian territory and over 130 countries, and its specimens...

The original description of Turbo heisei Prado, 1999 was based on two empty shells from the type locality (off Marataízes, Espírito Santo state, Brazil), leaving undescribed many details on conchological variation. The present study redescribes this species based on an extensive assemblage deposited in the malacology collection of the Museu de Zool...

Architectonicidae is a diverse family of heterobranch sea snails comprising over 11 genera and 140 extant species distributed worldwide (Bieler & Petit, 2005). They live in shallow to deep water, and have turbinate to discoidal shells, with a typically wide umbilicus and a downward-pointing (heterostrophic) protoconch (Healy, 1998). Pseudotorinia p...

An alphabetical list of 352 type lots of molluscs housed in the Museu de Zoologia da Universidade de São Paulo is presented following the standards of the previous list by Dornellas & Simone (2011), with a few adjustments. Important items listed herein include types of species described after the previous compilation, as well as recently acquired p...

The family Seguenziidae of marine snails is distributed worldwide, usually living in bathyal depths (between 200–1000 m) on fine sedimentary substrates. They are commonly found in collections of deep-water mollusks in small numbers and as empty shells only. As such, their classification is almost exclusively based on shell characters (Quinn 1983a)....

In Brazilian archaeological shellmounds, many species of land snails are found abundantly distributed throughout the occupational layers, forming a contextualized set of samples within the sites and offering a potential alternative to the use of charcoal for radiocarbon dating analyses. In order to confirm the effectiveness of this alternative, one...

A sample of land snails, mainly pulmonates, was recently collected in caves in the Alto Ribeira State and Tourist Park ("Parque Estadual Turístico do Alto Ribeira" [PETAR], in Portuguese), an important tourism spot in São Paulo state, Brazil. Overall, twenty-one species were found, the following being reported for the first time for São Paulo state...

Solariellidae is a diverse family of small (5–20 mm) marine snails of worldwide distribution. They usually live on fine sediment to unconsolidated substrates in deep-waters of extra-tropical to tropical latitudes (Hickman 1998; Williams et al. 2013). Initially described as a subfamily of Trochidae, it has been recently raised to family level (Bouch...

The mollusk specimens belonging to the former physician and researcher Jorge Faria Vaz’s private collection were incorporated into the institutional assemblage of the Museu de Zoologia da Universidade de São Paulo from 2005 to 2013. A brief account on his life and career, as well as a statistical report of the assemblage are herein provided. The wh...

Philately started in the UK, in 1840, with the issue of the first postage stamp, the Penny Black. From the simple portrait of Queen Victoria on this stamp, the illustrations developed and diversified, accompanying the trend of stamp collecting. Almost from the start, mollusks began to appear on stamps; the first one dating to 1859. Brazil was the t...

Mollusks are one of the most diverse groups of organisms known to science. Humanity has described more than 80,000 species of snails and slugs (gastropods), clams, oysters and scallops (bivalves), squids and octopuses (cephalopods), tusk shells (scaphopods) and their less-known kin (e.g., polyplacophorans and aplacophorans), and many more are waiti...

A sample of land snails, mainly pulmonates, was recently collected in southeastern Tocantins state, Brazil, close to the border with Bahia state. The following species were found in the material, all of them are reported for the first time from Tocantins: Helicina schereri (Helicinidae); Solaropsis fairchildi and Solaropsis rosarium (Camaenidae); A...

The present work deals with the vetigastropods of the family Seguenziidae collected by the Marion Dufresne (MD55) expedition in SE Brazil, reporting the occurrence of eight species. The following species have their geographical range extended: Ancistrobasis costulata, Carenzia carinata, Carenzia trispinosa, Hadroconus altus, Seguenzia elegans and S...

Abstract.—Specimen deterioration in museum collections and exhibits is a recurring worry of curators. Malacological collections, i.e., those containing mollusk shells, are of special concern, because these specimens are composed largely of calcium carbonate, a compound that easily deteriorates in acidic storage media. There are two main problems re...

An interesting new species of pulmonate land snail was collected in two shell mounds, Figueirinha II and Jabuticabeira II, from Jaguaruna municipality, Santa Catarina, Brazil. It is described here as Megalobulimus jaguarunensis sp. nov., and can be identified by its small, slightly dorsoventrally compressed, slender shell, with an elongate outline,...

A remarkable new species of pulmonate land snail was found in the collection of the Senckenberg Forschungninstitut und Naturmuseum Frankfurt (Frankfurt am Main, Germany) and is described here as Leiostracus faerie sp. nov. It can be easily identified by its small and translucent shell with fine axial light brown bands and its protoconch sculpture....

Some of the deep-water molluscs collected during the Marion Dufresne (MD55) expedition off SE Brazil have been studied in recent papers. The present work fo-cuses on the heterobranch family Architectonicidae. Four species have their occur-rence expanded to/in the SW Atlantic (new records in parenthesis): Psilaxis cler-toni Tenório, Barros, Francisc...

A remarkable new species of pulmonate snail was recently collected in a small Atlantic Rainforest fragment near the city of Canavieiras, state of Bahia, Brazil, an area known for a high diversity of land snails. It is described herein as Leiostracus fetidus sp. nov. and can be easily identified by its color pattern of irregular brown to black axial...

The occurrence of Helobdella triserialis associated with two freshwater snails, Pomacea diffusa and Pomacea canaliculata, is recorded for the first time in Brazil. We also point out the new association between the leech and P. diffusa in nature.

Three new records of Pseudotorinia architae (O.G. Costa, 1841) are reported from southeastern Brazil, namely from the continental slope of Abrolhos (off Espírito Santo state) and from off Vitória Island and São Sebastião (São Paulo state). These new records greatly extend the known geographic range of the species; its previously southernmost record...

The original description of Solatisonax cabrali Tenório, Barros, Francisco & Silva, 2011 (Architectonicidae) was based on four eroded juvenile shells found on the northeastern Brazilian coast. The present study redescribes this snail species based on the type material and additional well-preserved shells collected in southeastern Brazil, an adult a...

A supposed single species of the fasciolariid genus Teralatirus occurring in the Western Atlantic is revised. Two species are recognized. One of them is T. roboreus (Reeve 1845), a revalidation and new combination, being an older name for the previously known T. ernesti Melvill 1910 (the type species). Its distribution is expanded southward, from t...

We report two new records of Nassarius karinae Usticke, 1971, from Minerva Seamount and Abrolhos Archipelago, off northeastern Brazil. The new records extend the known geographic range of the species ca. 1000 km southward from Pernambuco to Bahia. These are also the first records of the species in Bahia. Additional notes on shell morphology and com...

Leiostracus subtuszonatus (Pilsbry 1899) was originally described as a colour variant of L. onager (Beck 1837). Here we conduct a taxonomic revision of these two species and regard them as separate taxa, distinguished by shell size, colour pattern, whorl convexity and protoconch sculpture. We also define a neotype for each species and offer updated...

Aylacostoma francana (Ihering, 1909) is a species of freshwater snail belonging to the family Thiaridae with distribution currently restricted to São Paulo state, southeastern Brazil. This paper aims to report the first record of the species in Minas Gerais state. Possible means of introduction, as well as some characteristics of this species and n...

Part of the private collection of the late public health physician and shell collector Jorge Faria Vaz was recently donated to the Museu de Zoologia da Universidade de São Paulo (MZSP; São Paulo, Brazil). A new species of pulmonate land snail, Oxychona maculata sp. nov. (Orthalicidae), was found in this collection and is herein described. The speci...

Nassarius levis sp. nov. is described from Canopus Bank, off Ceará, Northeast Brazil, based on shell morphology. It differs from other Brazilian species of the genus in having a more elongate shell, with a weakly developed parietal shield and a notably smooth surface. This last trait has not yet been described among the Western Atlantic Nassarius,...

In this paper we report 18 new occurrences of the invasive bivalve Myoforceps aristatus (Dillwyn, 1817) in the Brazilian coast. These new records were carried out in 2007-2012, and included the northeastern states of Ceará and Bahia, as well as Santa Catarina, São Paulo and Rio de Janeiro in the south-southeastern regions. Specimens of M. aristatus...