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Issue: Vol. 5506 No. 2: 6 Sept. 2024
Type: Article
Published: 2024-09-06
DOI: 10.11646/zootaxa.5506.2.5
Page range: 245-260
Abstract views: 206
PDF downloaded: 14

On some colorful bryozoans from Brazil: reevaluation of Aptonella violacea Canu & Bassler, 1928 and a new species of Cosciniopsis Canu & Bassler, 1927

Laboratório de Estudos de Bryozoa – LAEBry; Departamento de Zoologia; Centro de Biociências; Universidade Federal de Pernambuco; Recife; PE; 50670–810; Brazil
Museu de História Natural; Setor da Zoologia; Instituto de Biologia; Universidade Federal da Bahia; Salvador; BA; 40170–115; Brazil
Laboratório de Estudos de Bryozoa – LAEBry; Departamento de Zoologia; Centro de Biociências; Universidade Federal de Pernambuco; Recife; PE; 50670–810; Brazil; Department of Life Science; Natural History Museum; Cromwell Road; London SW7 5BD; UK
Bryozoa Bitectiporidae Cosciniopsis Cycloperiella Gigantopora morphology new combination new species taxonomy

Abstract

Gigantoporidae Bassler, 1935 is a cheilostome bryozoan family comprising five genera, including the colorful genus Cosciniopsis Canu & Bassler, 1927, considered a senior synonym of Aptonella Canu & Bassler, 1928. The taxonomy of Aptonella has historically been considered confusing due to the colored zooecia, which suggests an affinity with other genera such as the stomachetosellid Cycloperiella Canu & Bassler, 1923. Here, the type species of Aptonella, A. violacea Canu & Bassler, 1928, is reevaluated and compared with other Gigantoporidae, to provide a new combination: Cycloperiella violacea n. comb. For the reassessment of Gigantoporidae, the type species of Gigantopora Ridley, 1881, G. lyncoides Ridley, 1881 is redescribed, and a new species of Cosciniopsis, C. viridis sp. nov. is described from Brazil. Characteristics of Cy. violacea, including a double calcified ooecium (lepralielliform type) and the acleithral-type aperture in ovicelled zooids, are distinct from other Gigantoporidae. This distinction supports the synonymization of Aptonella with Cycloperiella, which is here transferred to the family Bitectiporidae MacGillivray, 1895.

 

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