Lista preliminar de los Punctoideos de Rio Grande do Sul, Brasil, con descripción de dos especies nuevas (Mollusca, Gastropoda, Stylommatophora)

AUTOR(ES)

Miquel, Sergio Eduardo, Ramírez, Rina, Thomé, José Willibaldo

FONTE

Revista Brasileira de Zoologia

DATA DE PUBLICAÇÃO

2004-12

RESUMO

The partial list of the land snails Punctoidea from the "Centro de Pesquisas e Conservação da Natureza Pró-Mata" (São Francisco de Paula, State of Rio Grande do Sul, Brazil) (CPCN-PM) is presented herein. This list includes seven species, two of them new. The CPCN-PM is located between 600 and 950 m of altitude; it has a temperate super humid to humid climate, with 2,250 mm of annual rainfall and means annual temperature of 14.5ºC; three main phytoecological regions are present -mixed ombrophile forest, dense ombrophile forest and savanna. The taxa found are: Rotadiscus amancaezensis (Hidalgo, 1869), Lilloiconcha tucumana (Hylton Scott, 1963), Radiodiscus cuprinus Fonseca & Thomé, 2000, Radiodiscus tenellus Hylton Scott, 1957, Radiodiscus promatensis sp. nov., Zilchogyra gordurasensis (Thiele, 1927) and Zilchogyra zulmae sp. nov. The shell of R. promatensis sp. nov. is very small, almost flat, with very wide umbilicus, reniform aperture, teleoconch with spiral striae and 58-62 axial ribs on the body whorl. The shell of Z. zulmae sp. nov. is trochiform elevated, with five whorls with strong and widely spaced axial ribs (25-38), wide and perspective umbilicus and sub circular angled aperture. The charopid gastropod fauna from the CPCN-PM has three species known only from there (R. cuprinus, R. promatensis sp. nov. and Z. zulmae sp. nov.), another one with previous known distribution only in Paraguay (R. tenellus) and three common species (L. tucumana, R. amancaezensis and Z. gordurasensis) with distribution in other South American areas -mainly Yungas forests.

Documentos Relacionados

• Solaropsis brasiliana, anatomy, range extension and its phylogenetic position within Pleurodontidae (Mollusca, Gastropoda, Stylommatophora)
• Sistemática e ecologia de espécies de Omalonyx (Mollusca, Gastropoda, Succineidae) no estado do Rio Grande do Sul
• Nova espécie de Thaumastus da Floresta Atlântica do Paraná, Brasil (Mollusca, Gastropoda, Pulmonata, Bulimuloidea)
• Anatomy and development of intracapsular niritina zebra (Buguiere, 1792) (Mollusca, Gastropoda, Neritidae)
• Duas novas espécies de Simpulopsis (Gastropoda, Bulimulidae) para o Rio Grande do Sul, Brasil