Rhynchospio, Hartman, 1936
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publication ID |
https://doi.org/ 10.1080/00222930701376717 |
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persistent identifier |
https://treatment.plazi.org/id/283187C5-FFB0-FF9C-FE29-8423FB0EFCDE |
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treatment provided by |
Carolina |
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scientific name |
Rhynchospio |
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Key to Rhynchospio View in CoL species
1. Chaetiger 1 with capillaries only in neuropodia. Hooks in neuropodia from chaetiger 8................. R. australiana View in CoL
– Chaetiger 1 with capillaries in noto- and neuropodia........ 2
2. Caruncle anteriorly elevated above prostomium. Anterior branchiae conspicuously large, foliaceous. Hooks in neuropodia from chaetiger 17. Pygidium with up to 18 short and broad lobes.............. R. foliosa View in CoL
– Caruncle not elevated above prostomium. Anterior branchiae of moderate size, elongate. Pygidium with less than 14 elongated cirri......... 3
3. Caruncle posteriorly with two pairs of digitiform nuchal lobes. Hooks in neuropodia from chaetiger 27............ R. glycera View in CoL
– Caruncle posteriorly narrow, without digitiform lobes........ 4
4. Underside of prostomial horns with three minute tubercles. Hooks in neuropodia from chaetigers 16–17............. R. tuberculata View in CoL
– Underside of prostomial horns smooth............ 5
5. Anterior part of body inflated. Hooks in neuropodia from chaetiger 37 R. inflatus View in CoL
– Anterior part of body slender. Hooks in neuropodia from more anterior chaetigers..................... 6
6. In juveniles, hooks in neuropodia from chaetigers 10–11, all tridentate; in mature worms, hooks in neuropodia of chaetigers 11–14 heavy unidentate, and from chaetiger 15 onwards tridentate. Metameric nuchal organs extending to chaetigers 9–22. Pygidium with two to three pairs of cirri. Hermaphrodite with sperm in chaetigers 11–14 and oocytes from chaetiger 15 to 23–33. R. nhatrangi View in CoL sp. nov.
– Hooks in neuropodia from chaetigers 9–18, all tridentate....... 7
7. Caruncle prominent, over chaetiger 2. Ventral pair of pygidial cirri inflated...................... R. glutaea
– Caruncle low, indistinct, over chaetiger 1. Ventral pair of cirri digitiform..................... R. arenincola View in CoL
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