Taxonomic contribution to the genus Sphaerosyllis (Annelida: Syllidae: Exogoninae) in the Black Sea
Martín, Guillermo San
Zootaxa
2017
2017-10-05
4329
3
281
291
84TQW
San Martin & Aguado
2014
[491,652,1800,1826]
Polychaeta
Syllidae
Sphaerosyllis
Animalia
Phyllodocida
7
288
Annelida
genus
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
1661822841
Southern
8
289
1
Southern