Navegando por Assunto "Synocheta"

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Artigo
A new species of Spelunconiscus (Isopoda: Oniscidea: Styloniscidae) for Brazilian caves: new record for the type species and an emended diagnosis for the genus
(2022) Bastos-Pereira, Rafaela; Souza, Leila Aparecida ; Sandi, Beatriz ; Ferreira, Rodrigo
Spelunconiscus Campos-Filho, Araujo and Taiti, 2014 is a monotypic genus of the family Styloniscidae represented by a troglobitic species, Spelunconiscus castroi Campos-Filho, Araujo and Taiti, 2014, from the cave MOC-32, in the state of Minas Gerais, southeastern Brazil. New representatives of this family were found in three additional caves, which revealed a new species, Spelunconiscus septemlacuum sp. nov., from Taboa and Tatuzinhos caves and a new occurrence for the type-species in Retiro cave. The original diagnosis of Spelunconiscus is emended due to the discovery of a spur-like structure in the male pereopod VII ischium, as well as some supplementary traits that have not been previously considered. Spelunconiscus septemlacuum sp. nov. differs from S. castroi in the number of articles of the antennal flagellum, in the proportion between this flagellum and 5th article of peduncle of antenna, in the size of maxilliped endite, in the morphology of male pleopod II and in body size. A discussion is provided for both taxonomic and ecological concerns.
Artigo
New troglobitic species of Pectenoniscus Andersson, 1960 (Isopoda: Oniscidea: Styloniscidae) from Bahia state, Brazil
(2023-07-18) Cardoso, Giovanna Monticelli; Ferreira, Rodrigo Lopes
Five new species of Pectenoniscus are described from Bahia state: Pectenoniscus monsviridis n. sp. and Pectenoniscus revelatus n. sp. from Serra do Ramalho Karst area; Pectenoniscus archaeos n. sp. and Pectenoniscus sepultus n. sp. from Serra de Iuiú Karst area; and Pectenoniscus caesarius n. sp. from Campo Formoso Karst area. Additional notes are provided on their habitats and threats.
Texto publicado em jornal
New troglobitic species of Xangoniscus (Isopoda: Styloniscidae) from Brazil, with notes on their habitats and threats
(2020-07-22) CARDOSO, GIOVANNA MONTICELLI; BASTOS-PEREIRA, RAFAELA; SOUZA, LEILA APARECIDA; FERREIRA, RODRIGO LOPES
In the present work, five new species of Xangoniscus are described, increasing to eight the number of the known troglobitic species for the genus. Xangoniscus species can be distinguished from each other by the shape of pleonites epimera, the number and size of aesthetascs in the distal article of antennula, the modifications on pereopods, the shape of male pleopods and the proportion between uropod rami. Species from this genus are known for the states of Minas Gerais and Bahia with Xangoniscusaganju representing the northernmost occurrence, and X. lundin. sp. and X. daguan. sp. the southernmost occurrences. Of the six caves where specimens were collected, four are not registered in the national speleological database, what points to all the potential to yet be discovered regarding number of cavities and the associated biodiversity in Brazil. Some of the here mentioned type localities are not located inside protected areas, therefore exposing the species to risks related to the adjacent land use and consequent influence on water table level and input of food resources. The contribution of this work with descriptions of new troglobitic species provides support to consider them as plausible candidates to be assessed in the next list of threatened species as well as to elaborate conservation actions for the species, the caves where they inhabit and the surrounding landscape.