Sessilogoga Grygier 1990
Year: 2024
Type: other
Abstract: Genus Sessilogoga Grygier, 1990 Type species Sessilogoga elongata Grygier, 1990 Key to genera of the family Synagogidae and species of the genus Sessilogoga (based on morphology of females) 1 Carapace functionally bivalved, with long aperture, thorax without dorsal humps or horns, parasites of antipatharians or crinoids............................................................................................. 2 - Carapace functionally univalved, with restricted aperture (medium or short), thorax with dorsal humps or horns, mesoparasites of octocorals (unknown for Flatsia)....................................................................... 6 2 Epaulets on thoracomere 6 absent, frontal filament complex small, endoparasites of antipatharians.......... 3 (Sessilogoga) - Epaulets on thoracomere 6 present, frontal filament complex developed, ectoparasites of antipatharians or crinoids........ 5 3 Furcal rami length/height ratio 4.0–5.0............................................................. S. captiva - Furcal rami length/height ratio 6.0–9.0.................................................................... 4 4 Furcal rami length/height ratio 7.5–9.0, telsonic spines denticulate...................................... S. elongata - Furcal rami length/height ratio 6.0–6.5, telsonic spines smooth.......................................... S. perfuga 5 Ventral margin of carapace valves unflattened, without pair of big anterior pores, filamentary appendage of thoracopod 1 absent, ectoparasites of antipatharians.............................................................. Synagoga - Ventral margin of carapace valves flattened, with pair of big anterior pores, filamentary appendage of thoracopod 1 present, ectoparasites of crinoids......................................................................... Waginella 6 Carapace with special superficial grapnels and antero-ventral anchoring protrusion, parasites of octocorals of genus Chrysogorgia ......................................................................... Thalassomembracis - Carapace without special superficial grapnels and antero-ventral anchoring protrusion............................... 7 7 Thoracomeres with mid-dorsal dorsal humps, carapace aperture of medium length, host unknown................ Flatsia - Thoracomeres with long dorsal horns, carapace aperture small, parasites of octocorals of orders Malacalcyonacea and Scleralcyonacea...................................................................................... 8 8 Dorsal horns present on thoracomeres 1–3, but never on thoracomeres 4 or 5, parasites of octocorals of families Paramuriceidae, Eunicellidae and Primnoidae ................................................................ Gorgonolaureus - Dorsal horns present on thoracomeres 2–5, but never on thoracomere 1.......................................... 9 9 Females with uniramous penis, telsonic spines considerably shorter than furcal rami, parasites of octocorals of family Keratoisididae ................................................................................. Isidascus - Females with bifurcate penis, telsonic spines comparable in length to furcal rami, parasites of octocorals of family Chrysogorgiidae ............................................................................ Cardomanica
Institution: Lomonosov Moscow State University
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6911844401
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