Staurocalyptus
# Staurocalyptus

Staurocalyptus is a genus of sponge. It was circumscribed in 1897 by Isao Ijima.

## Taxonomy

Ijima circumscribed Staurocalyptus as a genus in the family Rossellidae. His initial taxonomy included three newly described species and two transferred from Rhabdocalyptus. Ijimi did not designate a type species; in 1967 V. M. Koltun designated Rhabdocalyptus dowlingi Lambe, 1893 as the type species. A 2002 revision of Rossellidae by K. R. Tabachnick demoted Staurocalyptus to be a subgenus of Acanthascus and designated a new type species: Staurocalyptus glaber Ijima, 1897. However, as of 2017, WoRMS still classifies Staurocalyptus as a genus and follows Koltun's type species designation, not that of Tabachnick.

## Distribution

Its species are found in the Pacific Ocean, at a depth of 30–1,700 metres (98–5,577 ft).

## Species

As of 2017, WoRMS recognizes the following seventeen species:

* Staurocalyptus affinis Ijima, 1904
* Staurocalyptus celebesianus IIjima, 1927
* Staurocalyptus dowlingi (Lambe, 1893) Ijima, 1897
* Staurocalyptus entacanthus Ijima, 1904
* Staurocalyptus fasciculatus Schulze, 1899
* Staurocalyptus fuca Tabachnick, 1989
* Staurocalyptus glaber Ijima, 1897
* Staurocalyptus hamatus Lendenfeld, 1915
* Staurocalyptus heteractinus Ijima, 1897
* Staurocalyptus microchetus Ijima, 1898
* Staurocalyptus pleorhaphides Ijima, 1897
* Staurocalyptus psilosus Reiswig & Stone, 2013
* Staurocalyptus roeperi (Schulze, 1886) Ijima, 1897
* Staurocalyptus rugocruciatus Okada, 1932
* Staurocalyptus solidus Schulze, 1899
* Staurocalyptus tubulosus Ijima, 1904
* Staurocalyptus tylotus Reiswig & Stone, 2013
