Chiton cimicoides, , Chiton

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, Zootaxa 4477 (1), pp. 1-138 : 21

cimicoides, Chiton [ Leptochiton cimicoides (Monterosato, 1879) ] ( Figures 1A, B )

1878c: 77 [XXI: 391]—nomen nudum

1879c: 24 [XXII: 480]—available name

Type material. MCZR–M–30001/L —1 sh (Lectotype) “ C. minimus, Monts = C. cancellatus (non Sow.)” back of the label “C. cancellatus (….) Sow”.

MCZR –M–30001/P— 4 sh (Paralectotypes) + 1 sh (Paralectotype) on a stub for SEM analysis “ C. minimus, Monts = C. cancellatus (non Sow.)” back of the label “C. cancellatus (….) Sow”.

Type locality. Palermo (Sicily). Described also from Gulf of Lion ( France) and Dalmatia ( Croatia).

Remarks. Monterosato (1879a: 23) described Chiton minimus n. sp., whereas Monterosato 1878 is nomen nudum. He introduced, however, the nomen novum C. cimicoides in the subsequent page, as possible replacement name for C. minimus Monterosato , non Spengler, 1797. The names proposed conditionally before 1961 are not to be excluded on that account alone ( ICZN, 1999, art. 11.5.1), and therefore, C. cimicoides is the name to use for this small elusive species, now usually placed in the genus Leptochiton J.E. Gray, 1847 (Dell’Angelo & Palazzi, 1987). Lepidopleurus intermedius von Salvini Plawen, 1968 (p. 251), described from Rovinj, Croatia, is regarded as a synonym, in spite of some differences in the ornamentation of girdle elements (Dell’Angelo & Palazzi, 1987; Kaas & van Belle, 1990: 9). Dell’Angelo & Palazzi (1987) designated the lectotype and figured one paralectotype. Recorded by MolluscaBase (2018) as Leptochiton cimicoides (Monterosato, 1879) .

Figures

FIGURE 1. A, B. Chiton cimicoides Monterosato, 1879, lectotype, Palermo (Sicily), H. 2.15 mm, with original label (MCZR– M–30001); C, D. Chiton pachylasmae Monterosato, 1879, holotype, Messina Strait (Italy), H. 3.4 mm, with original label and drawing (MCZR–M–12683); E, F. Chiton phaseolinus Monterosato, 1879, Palermo, (Sicily), H. 8.4 mm, with original labels (MCZR–M–12674); G, H. Chiton furtivus Monterosato, 1872, lectotype, Palermo (Sicily), H. 3.1 mm, with original labels (MCZR–M–12718); I, J. Propilidium tenue Monterosato, 1880, Palermo (Sicily), H. 2.1 mm, with original labels (MCZR–M– 12144); K–M. Fissurella dorsata Monterosato, 1878, fossil of Monte Pellegrino (Sicily), H. 38 mm, and H. 26.9 mm, with original labels (MCZR–M–11943); N, O. Fissurella producta Monterosato, 1880, lectotype, “Barberia” (Tunisia), H. 18.3 mm, with original label (MCZR–M–11965); P–R. Haliotis secernenda Monterosato, 1877, Palermo (Sicily), H. 44.1 mm, with original label (MCZR–M–11858).