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Table 1 Gastropods records, habitat and distribution details (in the study area)

From: New gastropod records for the Eastern Mediterranean Sea and one new alien (Emarginula decorata Deshayes, 1863) for the Mediterranean Sea from NW Aegean Sea, Greece

FAMILY (the change of species number/genus, % additions for Greece based on Koukouras [19] and Manousis et al. [17]) Species New record R: Greece EM: E Medit. A: Alien in Medit. The collection Stations in the Gulfs Zone/Depth (m) Habitat Mode of life [20] Found Origin
Thermaikos (1–4 stations) Toronaeos (5–12 stations) Siggitikos: (13–15 stations)
FISSURELLIDAE Emarginula adriatica Costa, 1829   1 9, 10 14, 15 10 - 120 Posidonia, & mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
(6 species from 5, 20% for the genus) Emarginula decorata Deshayes, 1863 R, EM, A    14 120 Mixed bottom Feeds on sponges Alive Red Sea & SE Africa
Emarginula huzardii (Payraudeau, 1826)   1, 3 5, 7, 9, 12 14 60 Zostera, biogenic & mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
Emarginula octaviana Coen, 1939     15 10 - 45 Biogenic & mixed bottom Feeds on sponges Alive Mediterranean Sea
Emarginula rosea Bell, 1824   1 8, 9, 12 14 10 - 60 Biogenic & mixed bottom Feeds on sponges Shells Mediterranean Sea
Emarginula sicula Gray, 1825   3    9 Mixed bottom Feeds on sponges Alive & shell Mediterranean Sea
SCISSURELLIDAE (new genus for Greece) Anatoma micalii Geiger, 2012 R, EM    14 120 Mixed bottom Euryphagous Shells W Mediterranean Sea & Sea of Marmara
No change Scissurella costata d' Orbigny, 1824   1, 2 7, 8, 11 14 10 - 70 Posidonia & biogenic bottom Feeds on live plant matter Alive & shells Mediterranean Sea
SKENEIDAE (new genus for Greece) Skeneoides exilissima (Philippi, 1844) R, EM 1    18 Mixed bottom Feeds on hydroids Shell W Mediterranean Sea
PHASIANELLIDAE Tricolia pullus (Linnaeus, 1758)   1, 3 5 15, 14 0 - 120 Zostera, biogenic & mixed bottom Feeds on marine algae and grasses Alive & shells Mediterranean Sea
(4 species from 3, 33% for the genus) Tricolia deschampsi Gofas, 1993 R, EM    14 120 Mixed bottom Feeds on marine algae and grasses Shell Mediterranean Sea
Tricolia speciosa (Von Muehlfeldt, 1824)   3   15 0 - 30 Mixed bottom Feeds on marine algae and grasses Alive & shells Mediterranean Sea
Tricolia tenuis (Michaud, 1829)   1 5 14, 15 5 - 60 Zostera, biogenic & mixed bottom Feeds on marine algae and grasses Alive & shells Mediterranean Sea
SILIQUARIIDAE (new genus for Greece) Petalopoma elisabettae Schiaparelli, 2002 R, EM 1, 4 10 15 10 - 70 Biogenic & mixed bottom Feeds on sponges Alive & shells Central Mediterranean Sea
No change Tenagodus obtusus (Schumacher, 1817)   1    10 Mixed bottom Feeds on sponges Shells Mediterranean Sea
TRIPHORIDAE Marshallora adversa (Montagu, 1903)   3, 4    60 - 70 Mixed bottom Feeds on sponges Shells Mediterranean Sea
No change
(3 species from 2, 50% for the genus) Monophorus erythrosoma (Bouchet & Guillemot, 1978)   1   14 5 - 120 Mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
Monophorus perversus (Linnaeus, 1758)   3    0 Zostera Feeds on sponges Shell Mediterranean Sea
Monophorus thiriotae Bouchet, 1985 R 4   15 30 - 70 Mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
(new genus for Greece) Obesula marinostri Bouchet, 1985 R, EM 1    10 Mixed bottom Feeds on sponges Alive W Mediterranean Sea
(2 species from 1, 100% for the genus) Similiphora similior (Bouchet & Guillemot, 1978)   1, 2, 3, 4 6   0 - 70 Zostera, biogenic & mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
Similiphora triclotae (Bouchet, 1996) R, EM 2   14 40 - 60 Mixed bottom Feeds on sponges Alive & shells W Mediterranean Sea
(new genus for Greece) Strobiligera flammulata Bouchet & Waren, 1993 R, EM    14, 15 30 - 120 Mixed bottom Feeds on sponges Alive & shell SW Mediterranean Sea
CERITHIOPSIDAE Cerithiopsis atalaya Watson, 1885 R, EM 1, 4   15 10 - 70 Mixed bottom Feeds on sponges Shells W Mediterranean Sea
(11 species from 3, 267% for the genus) Cerithiopsis barleei Jeffreys, 1867   1   15 5 - 30 Mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
Cerithiopsis diadema Monterosato, 1874 R, EM    14 60 Mixed bottom Feeds on sponges Shell W & Central Mediterranean Sea
Cerithiopsis fayalensis Watson, 1886 R, EM 1   14 20 - 120 Mixed bottom Feeds on sponges Alive & shells W Mediterranean Sea
Cerirhiopsis horrida (Monterosato, 1874)   4    70 Mixed bottom Feeds on sponges Shell Mediterranean Sea
Cerithiopsis micallii (Cecalupo & Villari, 1997) R, EM 4    70 Mixed bottom Feeds on sponges Alive & shell W & Central Mediterranean Sea
Cerithiopsis minima (Brusina, 1865)   3   14, 15 0 - 30 Mixed bottom Feeds on sponges Alive & Shells Mediterranean Sea
Cerithiopsis nana Jeffreys, 1867 R 1   15 5 - 50 Mixed bottom Feeds on sponges Alive & shell Mediterranean Sea
Cerithiopsis cf. oculisfictis Prkic & Mariottini, 2010 R, EM 4    100 Mixed bottom Feeds on sponges Alive Mediterranean Sea
Cerithiopsis scalaris (Locard, 1892)   1    10 Mixed bottom Feeds on sponges Shell Mediterranean Sea
Cerithiopsis tubercularis (Montagu, 1803)   1, 2, 4    5 - 70 Mixed bottom Feeds on sponges Alive & shells Mediterranean Sea
(2 species from 1, 100% for the genus) Dizoniopsis concatenata (Conti, 1864) R, EM 1    20 - 30 Mixed bottom Feeds on sponges Alive & shells Central Mediterranean Sea
Dizoniopsis coppolae (Aradas, 1879)   1, 4    20 - 70 Mixed bottom Feeds on sponges Shells Mediterranean Sea
No change Metaxia metaxa (delle Chiaje, 1828)   1   13, 14, 15 10 - 70 Biogenic & mixed bottom Feeds on sponges Alive & shells Mediterranean Sea