Published May 31, 2021 | Version v1
Taxonomic treatment Open

Polymastia sasuensis Kim & Sim 2021, n. sp.

  • 1. Natural History Museum, Hannam University, Daejeon 34430, Republic of Korea
  • 2. Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34430, Republic of Korea

Description

8. Polymastia sasuensis n. sp. (Fig. 10)

ṷ÷ųāḁḍ(ṳḋ)

Type specimen. Holotype (NIBRIV0000881729), Korea: Sasudo, Chuja-myeon, Jeju-si, Jeju-do, 2 Jun 2013, by SCUBA, depth 30-35 m, deposited in NIBR.

Description. Cushion shape sponge, size up to 7 × 6.5 × 4 cm. Surface with numerous protruding small papillae. Oscules open at apical of each conical papillae, 0.5 mm in diameter. Color is grayish green. Texture firm.

Skeleton: Ectosome 1 mm thick and densely packed with spicules and collagen. Thin long tylostyles brushed out to the surface in combination with medium and small sized spicules. In choanosome, long spicules around 900 μm, mix with medium and small sized spicules. Large tylostyles, 700-1,100 × 8-15 μm, medium tylostyles, 500-600 × 10 μm and small tylostyles, 150- 350 × 3-7 μm.

Etymology. The species name, sasuensis, is named after type locality Sasudo, Chuja-myeon, Jeju-do.

Remarks. This new species is similar to P. viridis in sponge shape but differs in thickness of spicules. In P. viridis, large and small tylostyles are thicker than P. sasuensis.

Notes

Published as part of Kim, Young A & Sim, Chung Ja, 2021, Ten new species of families Suberitidae and Polymastiidae (Demospongia: Heteroscleromorpha) from Korea, pp. 168-183 in Journal of Species Research 10 (2) on page 178, DOI: 10.12651/JSR.2021.10.2.168, http://zenodo.org/record/8120015

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Linked records

Additional details

Biodiversity

Collection code
SCUBA, NIBR
Event date
2013-06-02
Family
Polymastiidae
Genus
Polymastia
Kingdom
Animalia
Order
Polymastiida
Phylum
Porifera
Scientific name authorship
Kim & Sim
Species
sasuensis
Taxonomic status
sp. nov.
Taxon rank
species
Type status
holotype
Verbatim event date
2013-06-02
Taxonomic concept label
Polymastia sasuensis Kim & Sim, 2021