Characteristics
borings kidney-shaped S-shaped budding continuous budding of autozooids autozooids budding from kenozooidal stolon colony an encrusting, continuous sheet encrusting, uniserial erect, not rubbery erect, rubbery, brown, often washed ashore colony can be pealed off easily rather not color grey translucent brown white translucent with white borders yellow filaments on frontal surface absent present kenozooids other than stolons absent minute spherical, around the orifice as brown, corneous spines around the orifice a spherical pair proximo-lateral to orifice number of tentacles 8 9 10 11 12 13 14 15 16 17 18 19 20 21 > 21 orifice on a prominent cilindrical peristome not so bilabiate reproduction ITO sometimes present embryos in clusters of 3 or 4 in the zooids, never ITO embryos in clusters of 6 or 7 in the zooids, never ITO embryos sometimes present but number not important, never ITO embryo single, yellow embryo single, pink substrate preferences hydrozoid stems and erect Bryozoa seaweed hard substrates as stones, shells on several substrates boring in worm tubes boring in shells decapoda zooids along the stolon in a straight row in a spiral arrangement | Remaining taxa: Alcyonidium condylocinereum Porter, 2004
Alcyonidium diaphanum (Hudson, 1778)
Alcyonidium gelatinosum (Linnaeus, 1761)
Alcyonidium hirsutum (Fleming, 1828)
Alcyonidium hydrocoalitum Porter, 2004
Alcyonidium mamillatum Alder, 1857
Alcyonidium mytili Dalyell, 1848
Alcyonidium parasiticum (Fleming, 1828)
Alcyonidium polyoum (Hassall, 1841)
Amathia lendigera (Linnaeus, 1758)
Anguinella palmata Van Beneden, 1845
Arachnidium lacourti d'Hondt & Faasse, 2006
Bowerbankia citrina (Hincks, 1877)
Bowerbankia gracilis Leidy, 1855
Bowerbankia imbricata (Adams, 1798)
Buskia nitens Alder, 1857
Farrella repens (Farre, 1837)
Flustrellidra hispida (Fabricius, 1780)
Hypophorella expansa Ehlers, 1876
Panolicella nutans Jebram, 1985
Penetrantia concharum Silén, 1946
Vesicularia spinosa (Linnaeus, 1758)
Walkeria uva (Linnaeus, 1758)
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