Osedax bryani, Rouse & Goffredi & Johnson & Vrijenhoek, 2018

Rouse, Greg W., Goffredi, Shana K., Johnson, Shannon B. & Vrijenhoek, Robert C., 2018, An inordinate fondness for Osedax (Siboglinidae: Annelida): Fourteen new species of bone worms from California, Zootaxa 4377 (4), pp. 451-489 : 483

publication ID

https://doi.org/ 10.11646/zootaxa.4377.4.1

publication LSID

lsid:zoobank.org:pub:C36D839B-A704-41A8-AC2C-2A75AE39F23C

DOI

https://doi.org/10.5281/zenodo.5978306

persistent identifier

https://treatment.plazi.org/id/E476C76A-C9A2-4265-947F-A1AEE6B6262D

taxon LSID

lsid:zoobank.org:act:E476C76A-C9A2-4265-947F-A1AEE6B6262D

treatment provided by

Plazi

scientific name

Osedax bryani
status

sp. nov.

Osedax bryani View in CoL n. sp.

Figure 18 View FIGURE 18

‘MB17’ ( Rouse et al. 2015; Salathé & Vrijenhoek 2012)

Material examined. Holotype: SIO-BIC 4619 , Female (GenBank COI sequence JX280609 View Materials ), fixed in formalin preserved in ethanol, collected from a whale carcass deployed at 1820 meters depth in Monterey Submarine Canyon , California (36°42.496’N; 122°6.316’W), ROV Doc Ricketts dive number 12, March 13, 2009. GoogleMaps

Diagnosis and description. Holotype and only available specimen female ( Figs18A, B View FIGURE 18 ); in life trunk 4 mm long, 1.8 mm wide; crown of palps somewhat contracted, curled, 4.5 mm long. Pinnules of all palps oriented dorsally and the oviduct lying between the dorsalmost pair of palps. Oviduct extends from trunk into crown for 5 mm ( Figs 18A, B View FIGURE 18 ). In life, pinnules of palps reddish, otherwise no obvious pigment. Trunk with white ring around anterior margin; ring broken mid-dorsally by oviduct and mid-ventrally by and oval unpigmented patch. Clear demarcation of upper and lower trunk. Ovisac in holotype, damaged, a large ellipsoidal mass ( Figs 18A, B View FIGURE 18 ). Green root tissue visible but torn. Possible male found in tube of holotype, with chaetal-bearing segments inflated; found in tube lumen of females, lost following microscope slide preparation ( Fig. 18C View FIGURE 18 ).

Distribution. Known from Monterey Bay, California from 1820 meters depth in whale bone.

Etymology. This species is named (noun in the genitive case) in honor of Bryan Touryan-Schaefer, ROV Pilot/ Technician for MBARI, who collected many bones with Osedax over the years.

Remarks. Osedax bryani n. sp. is part of Osedax Clade V and is sister taxon to the O. rubiplumus and O. roseus clade ( Fig. 1 View FIGURE 1 ). It shows a minimum uncorrected distance, for COI, of ~15% to O. rubiplumus ( Table 4). Osedax bryani n. sp. shares distinguishing feature of a white ring around the anterior part of the trunk with O. randyi n. sp. and O. frankpressi and as with Clade II of Osedax , these species likely need to be distinguished with DNA data. The documentation of dwarf males in Osedax bryani n. sp. is the first for this species, which was listed as unknown in Rouse et al. (2015).

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Sabellida

Family

Siboglinidae

Genus

Osedax

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