Sphaerosyllis,
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https://doi.org/10.11646/zootaxa.4329.3.6 |
publication LSID |
lsid:zoobank.org:pub:A6346Fde-974C-4B40-8C81-116E3B39B1C7 |
persistent identifier |
http://treatment.plazi.org/id/2C11783F-FFED-0B36-FF77-780734D5FE73 |
treatment provided by |
Plazi |
scientific name |
Sphaerosyllis |
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Key to species of the genus Sphaerosyllis from the Black Sea
1. Parapodial glands present...............................................................................2
- Parapodial glands absent................................................................................5
2. Dorsal cirri shorter than parapodial lobes, at least in anterior chaetigers.......................................... 3
- Dorsal cirri longer than parapodial lobes...................................................................4
3. Blades of falcigers strongly serrated, short (<9 µm); shafts with strong distal spines..................................
.................................................................. Sphaerosyllis thomasi San Martín, 1984b - Blades of falcigers moderately serrated only in anterior and midbody dorsalmost chaetae; blades with slight dorso-ventral gradation but always longer than 9 µm; shafts smooth................................... Sphaerosyllis pontica sp. nov. 4. Blades of falcigers without marked dorso-ventral gradation in length................. Sphaerosyllis taylori Perkins, 1981
- Blades of falcigers with a marked dorso-ventral gradation in length (dorsalmost falcigers at least 1.5 times the length of ventral ones)................................................................ Sphaerosyllis hystrix Claparède, 1863
5. All parapodia with one straight acicula with subdistal enlargement; midbody parapodia with one enlarged modified chaetae lacking the blade....................................................... Sphaerosyllis bulbosa Southern, 1914
- Anterior parapodia with two aciculae each, one straight and one with tip bent at right angle; midbody parapodia with all heterogomph chaetae having blades........................................... Sphaerosyllis pirifera Claparède, 1868
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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