review of the genus Narcissia Gray, 1840 (Echinodermata: Asteroidea: Ophidiasteridae

Autor(es)

Cunha, Rosana ^{[1, 2]} ; Tavares, Marcos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Lab Invertebrados Marinhos, Museu Zool, Av Nazare 481, BR-04263000 Sao Paulo, SP - Brazil

^[2] Univ Fed Sao Paulo, Lab Ecol & Conservacao Marinha, Rua Dr Carvalho Mendonca 144, BR-11070100 Santos, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: Journal of the Marine Biological Association of the United Kingdom; v. 101, n. 6 DEC 2021.
• Citações Web of Science: 0

Resumo

Since the taxonomic revision of the Ophidiasteridae by H.L. Clark (1921), in which 20 genera were recognized as valid, several new genera and species were included in this family, and the boundaries between some of them became largely arbitrary. This also applies to Narcissia Gray, 1840, whose morphology and taxonomy are still very poorly understood today. The main goals of this research were: review the taxonomy of the genus Narcissia, from morphological studies; redescribe N. trigonaria Sladen, 1889 s. str.; characterize N. canariensis (d'Orbigny, 1839) and N. gracilis A.H. Clark, 1916, the two valid species most similar to N. trigonaria; review the validity of N. ahearnae Pawson, 2007 and N. trigonaria var. helenae Mortensen, 1933; review the validity of N. gracilis malpeloensis Downey, 1975. Altogether 370 specimens were analysed. All morphological structures of taxonomic importance have been illustrated, and, for the first time, the internal characters of this group were studied, from electron microscopy and microtomography. A new diagnosis for the genus Narcissia was constructed. Narcissia trigonaria was redescribed from a large specimen, from the type locality (Bahia, Brazil). Narcissia ahearnae is considered a valid species, and N. canariensis and N. trigonaria distinct entities. Narcissia trigonaria var. helenae is placed in the synonymy of N. trigonaria, and N. gracilis malpeloensis into the synonymy of N. gracilis. The dataset obtained in this work is by far the most complete acquired for the genus Narcissia. (AU)

• Processo FAPESP: 18/06311-1 - Por dentro das coleções do Museu Nacional de história natural do Smithsonian: desvendando o gênero Narcissia Gray, 1840 (Echinodermata: Asteroidea: Ophidiasteridae) a partir de estudos morfológicos
• Beneficiário: Rosana Fernandes da Cunha
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 17/05663-9 - Revisão taxonômica de Narcissia trigonaria Sladen, 1889 (Echinodermata: Asteroidea: Ophidiasteridae): uma única espécie?
• Beneficiário: Rosana Fernandes da Cunha
• Modalidade de apoio: Bolsas no Brasil - Mestrado