Ircinia ruetzleri, Kelly & Thacker, 2021

Kelly, Joseph B. & Thacker, Robert W., 2021, New shallow water species of Caribbean Ircinia Nardo, 1833 (Porifera: Irciniidae), Zootaxa 5072 (4), pp. 301-323 : 314-315

publication ID

https://doi.org/10.11646/zootaxa.5072.4.1

publication LSID

lsid:zoobank.org:pub:1D561060-A3A6-4F21-80B5-C393744349DB

DOI

https://doi.org/10.5281/zenodo.5749712

persistent identifier

https://treatment.plazi.org/id/C789E5F2-0BAB-4D78-9EFB-FD01E5E57D87

taxon LSID

lsid:zoobank.org:act:C789E5F2-0BAB-4D78-9EFB-FD01E5E57D87

treatment provided by

Plazi

scientific name

Ircinia ruetzleri
status

sp. nov.

Ircinia ruetzleri sp. nov.

Figures 12 View FIGURE 12 , 13 View FIGURE 13 ; Tables 1 View TABLE 1 , 2 View TABLE 2 .

urn:lsid:zoobank.org:act:C789E5F2-0BAB-4D78-9EFB-FD01E5E57D87

Holotype: USNM 1642001 View Materials (JK18x23; 16.8010, -88.1461; appx. 0.8 m depth; coll. J.B.K.; 17 August 2018). GoogleMaps

Paratypes: USNM 1641999 View Materials (JK18x21; 16.8010, -88.1461; appx. 0.8 m depth; coll. J.B.K.; 17 August 2018) GoogleMaps , USNM 1642000 View Materials (JK18x22; 16.8010, -88.1461; appx. 0.8 m depth; coll. J.B.K.; 17 August 2018) GoogleMaps , USNM 1642003 View Materials (JK18x25; 16.8010, -88.1461; appx. 0.8 m depth; coll. J.B.K.; 17 August 2018) GoogleMaps , USNM 1642004 View Materials (JK18x26; 16.8010, -88.1461; appx. 0.8 m depth; coll. J.B.K.; 17 August 2018) GoogleMaps .

Type locality: Mesoamerican Barrier Reef, Belize.

External morphology. Ircinia with an encrusting growth form, commonly with digitate projections, and dark gray pinacoderm ( Figure 12 View FIGURE 12 ). Conules 1–1.3 mm in height. Oscula flush or slightly raised, always black, 0.2–1 cm in diameter.

Interior morphology. Massive fascicular fibers 120–240 µm wide, heavily cored and tightly bound. Interconnecting fibers 30–50 um wide, lightly cored ( Figure 13 View FIGURE 13 ). Irciniid filaments 2–5 µm wide, terminating in spherical knobs, 5–10 µm in diameter. Cortex contains abundant inclusions of sand grains.

Ecology. This species is found on patch reefs co-inhabited by I. strobilina in shallow depths (0.5–1 m) adjacent to mangrove hammocks inhabited by I. vansoesti sp. nov. The surface is often covered with loose sand. The species commonly grows in close association with hydroids and multicellular algae.

Etymology. This species is named in honor of the sponge researcher Klaus Rützler.

Remarks. Referred to as the ‘Sp. 2’ growth form in Kelly et al. (2021).

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Dictyoceratida

Family

Irciniidae

Genus

Ircinia