Cladocroce infundibulum Lehnert & Stone, 2013, n. sp.
Cladocroce infundibulum n. sp. (Fig. 3) Material examined. Holotype: USNM# 1202118, collected by Jim Stark on 2 August 2012 at 52°56.22´N, 170°59.29´E on Stalemate Bank, 97.6 km W of Cape Wrangell, Attu Island, western Aleutian Islands, Alaska, USA, at a depth of 185 m and a water temperature of 3.6...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2013
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| Online Access: | https://doi.org/10.5281/zenodo.6163037 http://treatment.plazi.org/id/03DD1F42CB1E184941EBFEC9FE13B4DB |
| Summary: | Cladocroce infundibulum n. sp. (Fig. 3) Material examined. Holotype: USNM# 1202118, collected by Jim Stark on 2 August 2012 at 52°56.22´N, 170°59.29´E on Stalemate Bank, 97.6 km W of Cape Wrangell, Attu Island, western Aleutian Islands, Alaska, USA, at a depth of 185 m and a water temperature of 3.6°C. FIGURE 3. Cladocroce infundibulum n. sp. A. Holotype, grid marks are 1 cm 2. B. Choanosome: two spicule tracts run through the choanosomal reticulation of paucispicular tracts and single spicules. One runs from the upper left quarter of the photo vertically downwards and the second from the same starting point is running at approximately 45° downwards to the right. Scale bar is 250 µm. C. Close-up of independent spicule tract between choanosomal reticulation horizontal through the center of the photo. Scale bar is 250 µm. D. SEM photo of the oxeas. Description. The holotype (Fig. 3A) is a funnel-shaped, stalked, golden brown to light brown sponge. The stalk is approximately 1 cm in diameter in the middle and widens to almost 2 cm at the point of attachment to a pebble (4.6 cm in diameter). The stalk is almost 5 cm long and has a smooth surface, macroscopically different from the highly porous surfaces of the funnel. From the stalk the funnel widens gradually to a maximum diameter of about 17 cm and reaches a height of about 18 cm. The irregular outline of the upper margin of the funnel and many different sized apertures give the funnel a ragged appearance. The inner surface of the funnel bears larger pores than the outer surface. The thickness of the funnel wall is 5-6 mm. The specimen was partially fragmented upon collection and tears somewhat easily if torn perpendicular to the fibre tracts running through the sponge but otherwise is of firm consistency and resilient. The sponge is only slightly elastic. There is no special ectosome developed. The choanosome consists of ascending paucispicular tracts which are connected by single spicules. Between this meshwork run independently pauci- to polyspicular tracts ... |
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