Strombus

5-18

Authors: Duarte R.C.S., Mota E.L.S.; Almeida I.C.S.; Pessanha A.L.M.; Christoffersen M.L.; Dias T.L.P.

An inventory of the gastropods associated with three species of reef macroalgae having different thallus structures are provided. We discuss how algal architecture influences diversity patterns, abundance and species richness. Fronds of the macroalgae Gracilaria domingensis (Kützing) Sonder ex Dickie, 1874, Padina pavonica (Linnaeus) Thivy, 1960, and Cryptonemia bengryi W.R. Taylor, 1960 were collected in coastal reefs of Cabo Branco Beach, João Pessoa, State of ParaÌba, Northeastern Brazil. Thalli were sorted in the laboratory to remove the associated mollusks. The macroalgae Gracilaria domingensis and Cryptonemia bengryi presented the most heterogeneous thallus architecture. The mollusk community comprised 18 species of gastropods, belonging to 14 genera. In total, 402 specimens were recorded, of which micromollusks predominated. The most frequent species were Eulithidium affine (C.B. Adams, 1850) (80% of occurrence), Rissoina sagraiana (d'Orbigny, 1842) (60%), Astyris lunata (Say, 1826) (40%), and Phyllaplysia engeli Marcus, 1955 (33.3%), the latter representing a new record for the coast of Paraíba state. The algae C. bengryi and G. domingensis presented highest values of richness and diversity for the associated malacofauna (F1,6= 10.14; p = 0.0001). Differences in the associated mollusk communities among the three species, as well as differences in the ecological descriptors for each alga, suggest that the algal architecture influences the richness, diversity, and composition of microgastropods in the marine phytal.

29-36

Authors: Cavallari, D.C. & Simone, L.R.L.

The mollusk specimens belonging to the former physician and researcher Jorge Faria Vazís 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 whole collection comprises 2,673 lots, from which, 2,285 contain Brazilian specimens, 367 are from other regions of the globe and 21 have unknown locality data. It includes 1,854 gastropod lots, 800 bivalve lots, tusk-shells (12 lots), cephalopods (6 lots) and a single polyplacophoran lot. Most specimens belong to terrestrial and freshwater groups (52%). In total, 184 molluscan families are present, the most abundant are: Hyriidae (Bivalvia), Bulimulidae (Gastropoda), Dentaliidae (Scaphopoda), Spirulidae (Cephalopoda) and Ischnochitonidae (Polyplacophora). The most noteworthy specimens are types and examined material from recently described and revised species, as well as several vouchers from Dr. Vaz's papers, now made available to the scientific community.

10-14

Authors: Gomes, L.E.O.; Correa, L.B.; Bernardino, A.F.

Myoforceps aristatus (Dillwyn, 1817) (Mytilidae) is an invasive species from the Western Atlantic currently reported from Cear·, Bahia, Rio de Janeiro, São Paulo and Santa Catarina states in Brazil. Recently, specimens of M. aristatus were sampled at abundances of up to 23 individuals per square meter on shallow reefs and exposed rocky shores of the northern coast of Rio de Janeiro and EspÌrito Santo states. Myoforceps aristatus occupies all shore levels over rocky and biogenic hard substrates including calcareous reefs, mollusk shells, dead corals and artificial structures. Since its invasion on the Brazilian coast has been discovered only recently, there is a pressing need to understand how M. aristatus occupies available niches and changes the structure and ecology of local intertidal and subtidal assemblages.

30-37

Authors: Fontenelle, J.H.; Cavallari, D.C.; Simone, L.R.L.

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, markedly prosocline aperture and conspicuous oblique fold, as well as a protoconch sculptured by a series of strong, moderately-spaced, prosocline axial ribs.

6-11

Authors: Cavallari, D.C.; Salvador, R.B.; Simone, L.R.L.

Three new records of Pseudotorinia architae (O.G. Costa, 1841) are reported from southeastern Brazil, namely from the continental slope of Abrolhos (off EspÌrito 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 being from the Caribbean Sea.

19-26

Authors: Salvador, R.B.

Sandelzhausen is a rich Early/Middle Miocene (Mammal Neogene zone MN5) fossil site near Mainburg, Southern Germany. Hundreds of fossil continental mollusks, almost exclusively pulmonates snails, were recovered during the excavations, but never received due attention by researchers. Here, a taxonomical treatment of the non-pulmonate fossil mollusks from Sandelzhausen is presented, dealing with the Caenogastropoda, Neritimorpha, lower Heterobranchia and Bivalvia. The following species were found in the material: Bithynia sp. (Bithyniidae); Pomatias sp. (Pomatiidae); Theodoxus sp. (Neritidae); Valvata sp. (Valvatidae); Sphaerium sp. (Sphaeriidae). Unfortunately, the poor preservation of the material precludes a more precise identification.

9-14

Authors: Swennen, C. & Buatip, S.

Specimens of the small nudibranch Murphydoris singaporensis Sigurdsson, 1991, monotype of the genus, were found on decaying pieces of wood along a mangrove fringe in Pattani Bay, Gulf of Thailand. This seems to be the first record of the species outside Singapore. Specimens were dissected by hand to describe the digestive and reproductive systems of the species. Only the radular teeth and buccal area had been described before. Striking details are the presence of a large buccal pouch as large as the buccal mass, flat branches of the digestive gland enveloping the hermaphrodite gland, a receptaculum and a bursa connected to the female duct. Differences were noted between the described buccal area in the original description and the present dissection.

23-27

Authors: Cavallari, D.C.; Gonçalves, E.P.; Amaral, V.S.

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 were found boring into gastropod and bivalve shells, as well as dead hard coral substrate alongside Lithophaga bisulcata (d’Orbigny, 1842), Mytilidae, a native species. This shows that M. aristatus may be less selective towards the substrate than originally assumed, and indicates the need of further studies in order to clarify the ecological relationships between these species. The data we present here points out to the fact that the invasion has worsened considerably, or was more severe than previously stated, and endorse previous statements towards the need of financial support for studies on marine bioinvasions in Brazil.

7-9

Authors: Ghilardi, R.P.; Carbonaro, F.A.; Simone, L.R.L.

This paper deals with a formal description of Physa mezzalirai (Basommatophora, Physidae), a new species of freshwater gastropod that lived in upper Cretaceous deposits, in sand-silty beds of Adamantina formation, Bauru basin, from Marília, São Paulo state, Brazil. This formal description legitimates the availability of the name previously described in 2010 by same authors; being this paper the correct citation for the species name.

13-14

Authors: Lima, P.O.V. & Delgado, M.

This paper presents the first record of Crosslandia daedali Poorman & Mulliner, 1981 in the South Atlantic, Northeast Brazil.