Monoplex comptus
Creators: name: Sacchetti, Claudia
name: Landau, Bernard
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Cymatiidae
Monoplex
Monoplex comptus

description: Monoplex comptus (A. Adams, 1855)
Plate 4 D 1 -D 2
* Triton comptus A. Adams 1855: 312.
Tritonium secans Bronn in Reiss 1862: 28, pl, 1, fig.10.
Tritonium secans Bronn — Mayer 1864: 72, pl. 7, fig. 52.
Triton ridleyi E. A. Smith 1890: 489, pl. 30, fig. 1.
Lampusia gracile (Reeve) — Dall 1889: 227, pl. 29, fig. 2 (non Triton gracilis Reeve, 1844 = Triton pfeifferianus Reeve, 1844).
Cymatium comptum (A. Adams, 1855) — Yen 1942: 215, pl. 18, fig. 112.
Cymatium (Septa) gemmatum (Reeve, 1844) — Clench & Turner 1957: 222, pl. 110, fig. 2, pl. 113, fig. 6, pl. 125, fig. 1-2 (non Triton gemmatus Reeve, 1844).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Warmke & Abbott 1961: 101, pl. 18b (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Kilias 1973: 193, fig. 139 (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Abbott 1974: 163, fig. 1754 (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Rios 1975: 79, pl. 79, fig. 322 (non Triton vespaceum Lamarck, 1822).
Cymatium vespaceum (Lamarck, 1822) — Hinton 1978: 30, fig. 9 (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Kay 1979: 223, fig. 79E (not 79F) (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Saunders 1980: 5, upper fig. (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) vespaceum (Lamarck, 1822) — Coelho et al. 1981: 124, fig. 9 (non Triton vespaceum Lamarck, 1822).
Cymatium vespaceum (Lamarck, 1822) — Garcia-Talavera 1983: 108, pl. 5, fig. 2 (non Triton vespaceum Lamarck, 1822).
Cymatium (Septa) comptum. (A. Adams, 1855)— Rios 1985: 75, pl. 27, fig. 329.
Cymatium (Septa) comptum (A. Adams, 1855) — Springsteen & Leobrera 1986: 113, pl. 31, fig. 3a-b.
Cymatium (Turritriton) comptum (A. Adams, 1855) — Garcia-Talavera 1987: 253, pl. 2, fig. 5.
Cymatium (Turritriton) comptum (A. Adams, 1855) — Lai 1989: 125, fig. 44.
Cymatium (Turritriton) comptum (A. Adams, 1855) — Henning & Hemmen 1993: 99, pl. 21, fig. 5.
Cymatium (Septa) comptum (A. Adams, 1855) — Rios 1994: 89, pl. 29, fig. 345.
Cymatium comptum (A. Adams, 1855) —Kubo, in Kubo & Kurozumi 1995: 75, fig. 9.
Cymatium vespaceum (Lamarck, 1822) — Wellens & Wils 1997: 79, fig. 14 (non Triton vespaceum Lamarck, 1822).
Cymatium (Monoplex) comptum (A. Adams, 1855) — Beu 1998b: 86, fig. 23i, 26a-k.
Cymatium (Monoplex) comptum (A. Adams, 1855) — Beu 1999: 21, fig. 35.
Cymatium (Monoplex) comptum (A. Adams, 1855) — Okutani 2000: 287, pl. 142, fig. 11.
Cymatium (Turritriton) comptum (A. Adams, 1855) — Redfern 2001: 62, pl. 31, fig. 263A, B, pl. 109, fig. 263C.
Cymatium comptum amphiatlanticum (A. Adams, 1855) — Garcia-Talavera & de Vera 2003: 202, fig. 1-5.
Cymatium (Monoplex) comptum (A. Adams, 1855) — Zhang & Ma 2004: 147, text-fig. 91.
Cymatium (Monoplex) comptum (A. Adams, 1855) —Beu & Segers in Poppe 2008: 644, pl. 267, fig. 1, 3, 4, 7, 8.
Monoplex comptus (A. Adams, 1855) — Beu 2010: 149, pl. 36, figs. 10, 14.
Cymatium comptum (A. Adams, 1855) —Hernández et al. 2011: 172, fig. 53L.
Santa Maria material examined. Maximum height 25.0 mm, width 14 mm. Two fragments from Pinheiros, Santa Maria Island, Azores, Touril Complex, Lower Pliocene.
Discussion. Tritonium secans Bronn, 1862 was based on four fragments, two from Pinheiros, one from Feteirinhas (= Ponta das Salinas) and one from Cré. No further material is available, but the figure undoubtedly represents a Monoplex species, which in our opinion is M. comptum (A. Adams, 1855). The specimen illustrated by Bronn in Reiss (1862: pl, 1, fig.10; refigured pl. 4, fig. 4 D 1) and by Mayer (1864: pl. 7, fig. 52; refigured pl. 4, fig. 4 D 2) is undoubtedly the same specimen, but the illustrator has highlighted the primary spiral cords much more strongly in Mayer’s illustration. For full discussion and comparison with related congeners, see Beu (2010: 149). This species and Aspa marginata (Gmelin, 1791) are the two amphiatlantic species present in the Azorean Pliocene assemblages.
Distribution. Lower Pliocene: eastern Atlantic, Santa Maria Island, Azores (Bronn in Reiss 1862; Mayer 1864). Lower Pleistocene: eastern Atlantic, Moín formation, Costa Rica. Pleistocene or Holocene: Atlantic, Panama; Red Sea, Egypt (NHMW coll.). Present-day: western Atlantic, Bermuda, Carolinian biogeographic province, Gulf of Mexico, Caribbean to Brasil; eastern Atlantic, Canary Islands, Indian Ocean, and Red Sea (all references from Beu 2010).
description: Published as part of Sacchetti, Claudia, Landau, Bernard & Ávila, Sérgio P., 2023, The Lower Pliocene marine gastropods of Santa Maria Island, Azores: Taxonomy and palaeobiogeographic implications, pp. 1-150 in Zootaxa 5295 (1) on pages 61-62, DOI: 10.11646/zootaxa.5295.1.1, http://zenodo.org/record/7965273