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Zootaxa
Magnolia Press
Zootaxa

Magnolia Press

1175-5326

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    Three new sea stars (Asteroidea: Solasteridae & Pterasteridae) from the Aleutian Islands

    ROGER N. CLARKSTEPHEN C. JEWETT
    13页
    查看更多>>摘要:Two new species of Solaster, and a new species of Pteraster are described from the nearshore waters of the Aleutian Islands and compared to congeners from the region. Solaster hexactis sp. nov., S. spectabilis sp. nov., and Pteraster willsi sp. nov.,are distinguished by the characteristics of the paxillar, marginal and adambulacral spines, and (in Solaster), the number of rays. The distributions of the new species and keys are provided.

    The fossil mite family Archaeorchestidae (Acari, Oribatida) II: redescription of Plategeocranus sulcatus and family-group relationships

    EKATERINA A. SIDORCHUKROY A. NORTON
    27页
    查看更多>>摘要:The oribatid mite family Archaeorchestidae was proposed based on a single specimen of Archaeorchestes minguezae Aril-lo & Subias, 2000, from Lower Cretaceous amber (Spain). In a previous paper we redescribed Strieremaeus illibatus Sellnick, 1918, fromEocene Baltic and Rovno amber, and considered Strieremaeus a senior synonym of Archaeorchestes. Herein, we transfer a second genus, Plategeocranus, to Archaeorchestidae. This is based on a redescription of the type species, P. sulcatus (Karsch, 1884), using non-type specimens (44 adults and"2 immatures from Baltic and Rovno ambers). Among these are eight Baltic amber specimens identified by Max Sellnick and currently housed in two museums in Kaliningrad: from the Museum of the World Ocean we designatespecimen #39 as neotype and specimens 22,30,33,35 and 37 as paraneotypes; from the Kaliningrad Museum of Amber we designate specimens 197-22 and 197-54 as paraneotypes. The contention of Arillo and Subias that Archaeorchestidae is a member of Zetorchestoidea (Eremaeoidea auct.), and is the extinct sister-family of Zetorchestidae, is supported with additional characters that relate to leg setation and the morphology of immatures. The possible inclusion of another Cretaceous fossil mite, Rasnitsynellapunctulata Krivolutsky, in Archaeorchestidae or Zetorchestoidea was rejected, leaving it in Plateremaeidae pending the direct investigation of specimens. New diagnoses are presented for Plategeocranus, Archaeorchestidae, and Zetorchestoidea.

    Two new brackish-water species of Testudinella (Rotifera: Testudinellidae) from Qi'ao Island in the Pearl River estuary, China, with a key to marine and brackish-water Testudinella

    NAN WEIWILLEM H. DE SMETRUNLIN XU
    16页
    查看更多>>摘要:Two new species of the rotifer genus Testudinella (Rotifera, Monogononta, Testudinellidae), T. pseudobscura sp. nov. and T. quadrilobata sp. nov., are described from the intertidal zone of a brackish-water tidal river and a mangrove swamp on Qi'ao Island in the Pearl River estuary, Guangdong province, southern China. Both species belong to T. clypeata (Mtiller, 1786)—T. obscura Althaus, 1957 group on account of possessing a proximal fulcrum opening, a slit-like foot opening and living in thalassic waters. The trophi of Testudinella zhujiangensis Wei, De Smet & Xu, 2010 are redescribed, and a key to the marine and brackish-water Testudinella species know to date is presented.

    A new species of Loxosomatidae (Entoprocta) from the Atlantic Ocean: Loxosomella cubana n. sp.

    CARLOS VARELAJ. MANUEL TIERNO DE FIGUEROALUIS SANCHEZ-TOCINO
    5页
    查看更多>>摘要:A new species of Entoprocta belonging to the genus Loxosomella is described: L. cubana n. sp. It has been found on the coast of Cuba living as an epizoite on the sponge Aiolochroia crassa. It is one of the largest Loxosomatidae described up to now andthe first record of an entoproct for Cuba.

    The type series of Pseudopaludicola ternetzi Miranda-Ribeiro, 1937 (Anura, Leiuperidae) with designation of a lectotype

    ULISSES CARAMASCHIJOSE P. POMBAL
    3页
    查看更多>>摘要:The genus Pseudopaludicola was erected by Miranda-Ribeiro (1926) to accomodate one species, P. falcipes (Hensel, 1867). Posteriorly, he added a second species to the genus, P. ternetzi, based on an undefined number of specimens, but surely involving males and females (Miranda-Ribeiro 1937). After a relatively detailed description and figures of a male and a female specimen, he particularly standed out one female specimen as coming from "Goyaz (Dr. Ternetz). Passa-Tres". Paulo Miranda-Ribeiro (1955),in his survey on the types of the species described by his father, cited P. ternetzi, but he did not define a type specimen for the species. Notwithstanding, Frost (2011) referred to purportedly "Syntypes: MNRJ (2 specimens); MNRJ 488, considered holotype by Miranda-Ribeiro, 1955", but this latter is actually the holotype of Barycholos ternetzi (Miranda-Ribeiro, 1937) (see Caramaschi & Pombal 2001). The type locality was cited by Frost (2011) only as "Goyaz [= Goias]", following P. Miranda-Ribeiro (1955), but adding that it was "restricted to 'Passa Tres, Goias' by Bokermann (1966). Actually, Bokermann (1966)", besides incorrectly having synonymized the species with Pseudopaludicola ameghini (Cope, 1887) (see Lobo 1994), just referred, as type localityfor the species, without comments, the only locality cited by Miranda-Ribeiro (1937) for one specimen examined by him. Given that for ongoing taxonomic revisions it is important to precisely identify all name-bearing type specimens in this genus, we examined the type series of P. ternetzi. Herein we designate a lectotype and list the paralectotypes for the species, thereby restricting and defining its type locality.