Ircinia radix, 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 : 308

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.5748798

persistent identifier

https://treatment.plazi.org/id/5E1E2B6C-0345-4449-B185-5E27D58DE4E2

taxon LSID

lsid:zoobank.org:act:5E1E2B6C-0345-4449-B185-5E27D58DE4E2

treatment provided by

Plazi

scientific name

Ircinia radix
status

sp. nov.

Ircinia radix sp. nov.

Figures 6 View FIGURE 6 , 7 View FIGURE 7 ; Tables 1 View TABLE 1 , 2 View TABLE 2 .

urn:lsid:zoobank.org:act:5E1E2B6C-0345-4449-B185-5E27D58DE4E2

Holotype: USNM 1582258 View Materials (P16x32; 9.30583, -82.1732; appx. 0.5 m depth; coll. J.B.K. and R.W. T.; 21 July 2016). GoogleMaps

Paratypes: USNM 1582257 View Materials (P16x31; 9.30583, -82.1732; appx. 0.5 m depth; coll. J.B.K. and R.W. T.; 21 July 2016) GoogleMaps , USNM 1582259 View Materials (P16x33; 9.30583, -82.1732; appx. 0.5 m depth; coll. J.B.K. and R.W. T.; 21 July 2016) GoogleMaps , USNM 1582260 View Materials (P16x34; 9.30583, -82.1732; appx. 0.5 m depth; coll. J.B.K. and R.W. T.; 21 July 2016) GoogleMaps .

Type locality: Bocas del Toro, Panama.

External morphology. Ircinia with a massive growth form and light to bright pink pinacoderm ( Figure 6 View FIGURE 6 ). Growth morphology can range from a round ball ( Figure 6A–C View FIGURE 6 ) to massive form with variously shaped upright elongations ( Figure 6D View FIGURE 6 ). Surface with low, rounded conules (1.5–2 mm). Oscula, 0.2–1.2 cm in diameter, flushed to the surface or slightly recessed, with a lighter-colored oscular membrane, usually white. Secondary smaller apertures may be sparsely distributed, made by animals inhabiting the sponge interior.

Interior morphology. Fascicular fibers 110–250 µm wide, heavily cored. Interconnecting fibers 10–50 um wide, lightly cored with elongate foreign spicules oriented in parallel to the axis of the fiber and occasional sediment grains ( Figure 7 View FIGURE 7 ). Irciniid filaments 1–4 µm wide, terminating in knobs with highly variable shapes, ranging from spherical to oval to tear-drop, and measuring 4–12 µm in diameter.

Ecology. This species inhabits shaded entanglements of mangrove roots.

Etymology. The name refers to the mangrove roots that this species lives on.

Remarks. Referred to as the ‘Massive A pink’ growth form in Kelly et al. (2021).

R

Departamento de Geologia, Universidad de Chile

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Dictyoceratida

Family

Irciniidae

Genus

Ircinia