New species of Eirenidae (Hydrozoa: Leptothecata) from the Amazonian coast (northern Brazil)

Everton  Giachini Tosetto; Sigrid  Neumann-Leitão; Miodeli  Nogueira Júnior

doi:10.3989/scimar.05051.14A

Autores/as

Everton Giachini Tosetto Departamento de Oceanografia, Universidade Federal de Pernambuco https://orcid.org/0000-0002-4020-0942
Sigrid Neumann-Leitão Departamento de Oceanografia, Universidade Federal de Pernambuco https://orcid.org/0000-0001-7878-8772
Miodeli Nogueira Júnior Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba https://orcid.org/0000-0001-5409-8312

DOI:

https://doi.org/10.3989/scimar.05051.14A

Palabras clave:

medusa, Cnidaria, hidrozoos, taxonomia, biodiversidad, océano Atlántico, especies nuevas

Resumen

En la costa amazónica se recolectaron dos nuevas especies de medusas Eirenidae, Eutima marajoara n. sp. y Helgicirrha angelicae n. sp. La primera se diferencia de otras especies del género por las gónadas que se extienden a lo largo de casi toda la longitud de la porción subumbrellar de los canales radiales, pero no conectados al canal circular, hasta 40 tentáculos marginales con bulbos cónicos y 48 verrugas marginales, cirros laterales y papilas adaxiales en algunas verrugas marginales y bulbos tentaculares. Helgicirrha angelicae n. sp. se diferencia de otras especies del género por las gónadas en la porción media de los canales radiales con yemas de medusa, pedúnculo gástrico corto, hasta 20 tentáculos marginales, algunos con papilas adaxiales, hasta tres verrugas marginales y dos estatocistos entre tentáculos sucesivos, lateral cirros tanto en bulbos de tentáculos como en verrugas marginales.

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