Mytilus herculeus Mytilus
Creators: name: Appolloni, Massimo
name: Smriglio, Carlo
name: Amati, Bruno
name: Lugliè, Lorenzo
name: Nofroni, Italo
name: Tringali, Lionello P.
name: Mariottini, Paolo
name: Oliverio, Marco
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Mytiloida
Mytilidae
Mytilus
Mytilus herculeus

description: herculeus, Mytilus [Mytilus galloprovincialis Lamarck, 1819] (Figures 34M, N)
1884h: 6 [XXXI: 665]—available name
Type material. MCZR –M–9788 —2 sh + 1 v dx “ Myt. Herculeus di Sciacca. ”
MCZR–M–9688 —2 sh “Sciacca”, “ Mytilus herculeus Monts. grande esemplare ‘specimen maximum’ di Sciacca (Sicilia)”.
Type locality. Described from Sciacca (Sicily).
Remarks. Introduced as Mytilus galloprovincialis var. “ herculea ”, the name M. herculeus was raised to the status of species in subsequent works of Monterosato (1891 a: 97, note; 1915: 10). It is a giant form of M. galloprovincialis Lamarck, 1819. Recorded by MolluscaBase (2018) as a synonym of Mytilus galloprovincialis Lamarck, 1819.
hyalinus, Mytilus (Dacrydium) [Dacrydium hyalinum (Monterosato, 1875)] (Figures 34O, P)
1875b: 10 [XIII: 236]—available name
Type material. MCZR –M–13973 —20 sh + 13 v “ Mytilus hyalinus Monts ”// 1 sh + 2 frg glued on thin cardboard, from “Messina”// 40 sh + 55 v + 4 frg from Palermo (= “P”, marked on the cork cap). Label on the bottom: “Myt. (Dacrydium) hyalinus Monteros. Palermo 40— 190 m.”
Type locality. Described from Palermo (Sicily) and other localities in the Mediterranean Sea, and Atlantic?
Remarks. We follow the currently accepted opinion, that Mytilus hyalinus is available from Monterosato (1875b:
10), where size and shape are referred as diagnostic with the Atlantic Dacrydium vitreum (Møller, 1842), also considering the previous (Monterosato 1872b: 18) more detailed description of the Mediterranean form given by Monterosato. Ockelmann (1983: 120) studied specimens “from Monterosato’s own material” (Palermo), and recorded among them two specimens with several embryos inside (yet he did not report the whereabout of such possible type material). A valve of a further specimen originating from Monterosato in the Locard coll. (MNHN) was figured by Salas (1996: 52, fig. 92). Recorded by MolluscaBase (2018) as Dacrydium hyalinum (Monterosato, 1875).
solidus, Mytilaster [Mytilaster solidus Monterosato, 1883 ex H. Martin ms.] (Figures 35A, B)
1872b: 18 [VI: 100]—nomen nudum
1883a: 89 [XXXa: 603]—available name
Type material. MCZR –M–9552 —4 sh “Mod. solida Martin ms. Etang d’Engrenier d. Martin” MCZR –M–9531 —2 sh “ M. solidus C. di Prov. a.”
Type locality. Described from Martigues (France), and Palermo (Sicily).
Remarks. Despite the species having been discussed and/or figured by several authors (e.g., Locard, 1889: 155– 158, pl. V, fig. 9; B.D.D., 1890: 149–150, pl. 29, figs 11–14; Bogi et al., 1985: 25; 26, fig. 2; Giannuzzi–Savelli et al., 2001: 111, figs 178–181), its actual identity is still unclear and has been interpreted in quite diverging ways. The whole genus Mytilaster Monterosato, 1883, needs a careful revision. Recorded by MolluscaBase (2018) as Mytilaster solidus Monterosato, 1883.
description: Published as part of Appolloni, Massimo, Smriglio, Carlo, Amati, Bruno, Lugliè, Lorenzo, Nofroni, Italo, Tringali, Lionello P., Mariottini, Paolo & Oliverio, Marco, 2018, Catalogue of the primary types of marine molluscan taxa described by Tommaso Allery Di Maria, Marquis of Monterosato, deposited in the Museo Civico di Zoologia, Roma, pp. 1-138 in Zootaxa 4477 (1) on pages 77-78, DOI: 10.11646/zootaxa.4477.1.1, http://zenodo.org/record/1454652