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Ott, B.; Reiswig, H.M.; McDaniel, N.; Harbo, R. (2019). New Species of Lissodendoryx Topsent, 1892 (Demospongiae, Poecilosclerida, Coelosphaeridae) and Myxilla Schmidt, 1862 (Demospongiae, Poecilosclerida, Myxillidae) from the Northeast Pacific. Zootaxa. 4700(1): 1-29.
359556
10.11646/zootaxa.4700.1.1 [view]
Ott, B.; Reiswig, H.M.; McDaniel, N.; Harbo, R.
2019
New Species of <em>Lissodendoryx</em> Topsent, 1892 (Demospongiae, Poecilosclerida, Coelosphaeridae) and <em>Myxilla</em> Schmidt, 1862 (Demospongiae, Poecilosclerida, Myxillidae) from the Northeast Pacific
Zootaxa
4700(1): 1-29
Publication
Available for editors  PDF available [request]
Collections of sponges by the late Dr. William C. Austin and the authors (N. McDaniel, R. Harbo and B. Ott) provided material for descriptions of new species from two genera of Poecilosclerida for shallow waters of Southern British Columbia, Canada and Northern Washington, USA: Lissodendoryx and Myxilla. There have been no new species of these two genera described for the Northeast Pacific since Laubenfels’ work in central California (Laubenfels 1930, 1932) and Lambe’s reports in 1893 to 1895 for Geological Survey of Canada sponge collections from British Columbia, Canada to the Bering Sea. We describe three new species of Lissodendoryx (Lissodendoryx) (Demospongiae, Poecilosclerida, Coelosphaeridae) and one new species of Myxilla (Myxilla) (Demospongiae, Poecilosclerida, Myxillidae): L. (L.) barkleyensis n. sp., L. (L.) littoralis n. sp., L. (L.) toxaraphida n. sp. and M. (M.) austini n. sp. Lissodendoryx (L.) barkleyensis n. sp. is cave-dwelling, has acanthostyles 112–260 µm, tornotes 107–177 µm, arcuate isochelas 8–28 µm and two sizes of sigmas 18–29, 26–55 µm. Lissodendoryx (L.) littoralis n. sp. fistulate habitus is adapted to muddy substrates similar to some Polymastia species also found commonly in the Northeast Pacific. It has subtylostyles 185–336 µm, tylotes 112–229 µm, arcuate isochelas 11–23 µm, and sigmas 30–75 µm. Lissodendoryx (L.) toxaraphida n. sp. is the only described Lissodendoryx species with raphides shaped like toxas. It has acanthostyles 140–286 µm, tornotes 143–195µm, arcuate isochelas 18–34 µm and toxiform raphides 65–156 µm. Myxilla (M.) austini n. sp. has a fistulate habitus and both tornote and tylote megascleres. It appears to be tolerant of low oxygen environments. Myxilla (M.) austini n. sp. has smooth to sparsely spined styles 193–353 µm, tylotes 153–221 µm, tornotes 174–260 µm, two sizes of anchorate isochelas 13–27, 42–81 µm, and two sizes of sigmas 13–47, 33–78 µm. All specimens were collected from shallow water (intertidal to 25 m).
Boreal eastern Pacific
Systematics, Taxonomy
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Date
action
by
2019-11-22 08:44:18Z
created
2019-11-23 13:28:18Z
changed

Holotype RBCM 019-00101-001, geounit Oregon, Washington, Vancouver Coast and Shelf, identified as Lissodendoryx (Lissodendoryx) barkleyensis Ott, Reiswig, McDaniel & Harbo, 2019
Holotype RBCM 019-00102-001, geounit Puget Trough/Georgia Basin, identified as Lissodendoryx (Lissodendoryx) littoralis Ott, Reiswig, McDaniel & Harbo, 2019
Holotype RBCM 019-00105-001, geounit North American Pacific Fijordland, identified as Lissodendoryx (Lissodendoryx) toxaraphida Ott, Reiswig, McDaniel & Harbo, 2019
Holotype RBCM 019-00106-001, geounit Puget Trough/Georgia Basin, identified as Myxilla (Myxilla) austini Ott, Reiswig, McDaniel & Harbo, 2019
Paratype RBCM 019-00107-001, geounit Puget Trough/Georgia Basin, identified as Myxilla (Myxilla) austini Ott, Reiswig, McDaniel & Harbo, 2019