Tharyx Webster and Benedict 1887 ...
Genus Tharyx Webster and Benedict, 1887 Type species: Tharyx acutus Webster & Benedict, 1887, by monotypy. Diagnosis. Prostomium conical; peristomium elongate, with pair of grooved dorsal tentacles arising on posterior margin anterior to setiger 1; first pair of branchiae typically arising immed...
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Zenodo
2015
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| Online Access: | https://dx.doi.org/10.5281/zenodo.5664948 https://zenodo.org/doi/10.5281/zenodo.5664948 |
| Summary: | Genus Tharyx Webster and Benedict, 1887 Type species: Tharyx acutus Webster & Benedict, 1887, by monotypy. Diagnosis. Prostomium conical; peristomium elongate, with pair of grooved dorsal tentacles arising on posterior margin anterior to setiger 1; first pair of branchiae typically arising immediately posterior to dorsal tentacles either on posterior margin of peristomium or on setiger 1; abdominal segments sometimes beadlike. Noto- and neurosetae arising close to one another, not widely separated. Setae include simple capillaries in anterior and middle setigers, acicular spines in posterior setigers with irregular notched tips, sometimes appearing more or less bidentate, with pair of stunted or rounded knobs but never with distinct, sharply pointed teeth; spines present either in both posterior noto- and neuropodia or only in neuropodia. Pygidium with terminal anus and small ventral lobe or disk. Remarks. Blake (1991) determined that the type species of Tharyx, T. acutus Webster & Benedict, 1887 had ... : Published as part of Blake, James A., 2015, New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic, pp. 501-552 in Zootaxa 3919 (3) on pages 532-533, DOI: 10.11646/zootaxa.3919.3.5, http://zenodo.org/record/234051 ... |
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