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Family Esperiopsidae Hentschel, 1923

  • Rob W. M. Van Soest
  • Eduardo Hajdu

Abstract

Esperiopsidae Hentschel (Demospongiae, Poecilosclerida) is revived and limited to sponges with the combination of possession of mycalostyles and lack of an ectosomal skeleton. The styles are united in tracts which form an isodictyal reticulation or an irregular anastomosing system. Microscleres if present include palmate isochelae, exceptionally anisochelae, and sigmas. The possession of forceps is reported but considered dubiously proper. The family is probably closest to Mycalidae, with which it is usually associated, and which shares the palmate chelae and mycalostyles. However, most Mycalidae have an elaborate ectosomal skeleton and most chelae are anisochelate. The family is predominantly recorded from temperate and colder waters.

Keywords

Porifera Demospongiae Poecilosclerida Mycalina Esperiopsidae Amphilectus Esperiopsis Semisuberites Ulosa 

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Copyright information

© Kluwer Academic / Plenum Publishers, New York 2002

Authors and Affiliations

  • Rob W. M. Van Soest
    • 1
  • Eduardo Hajdu
    • 2
    • 3
  1. 1.Zoological MuseumUniversity of AmsterdamAmsterdamNetherlands
  2. 2.Museu Nacional, Departamento de InvertebradosUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  3. 3.Centro de Biologia MarinhaUniversidade de São PauloSão SebastiãoBrazil

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