Fusceulima immaculata ( Dall, 1927 ) Souza & Araújo & Pimenta, 2024

Souza, Leonardo Santos De, Araújo, Tarciso Almeida De & Pimenta, Alexandre Dias, 2024, Taxonomic review of Aclis Lóven, 1846 (Gastropoda, Eulimidae) from Brazil with notes on other congeners from the western Atlantic and Saint Helena, Zootaxa 5433 (4), pp. 451-499 : 491

Fusceulima immaculata ( Dall, 1927) comb. nov.

Figs 23J, K

Aclis (Amblyspira) immaculata Dall, 1927: 71 .

Type material. Holotype (herein examined): USNM 108037 .

Type locality. USA: Georgia state: off Georgia, USFC sta. 2668; 30°58′30″N, 79°38′30″W, 538 m; Steamer Albatross col., 05/v/1886. The locality is not “off Fernandina” as stated in the original description (vide station number of the original label).

Material examined. The holotype.

Remarks. The present species has inconspicuous shell features, but the almost flat teleoconch whorls and the relatively shorter aperture, not advanced anteriorly contrast with other Aclis species. Besides that, SEM images available for study indicate that the teleoconch does not present the microscopic spiral striae typical of Aclis . A new classification in the genus Fusceulima Laseron, 1955 is here proposed, since the shell morphology of the present species follows the diagnosis provided by Souza & Pimenta (2014).

Figures

FIGURE 23. Species incorrectly attributed to Aclis. A–B. ‘Aclis’ angulata E.A. Smith, 1890. Syntypes, NHMUK 1889.10.1.762 and 1889.10.1.758, respectively; C–D. ‘Aclis’ didyma E.A. Smith, 1890. Syntypes, NHMUK 1889.10.1.775 and 1889.10.1.779, respectively; E–G. Ebala similima (E.A. Smith, 1890). Syntypes, NHMUK 1889.10.1.768–770; H–I. Graphis cubana (Bartsch, 1911). Holotype, USNM 94290; J–K. Fusceulima immaculata (Dall, 1927). Holotype, USNM 108037; L–M. Melanella limata (Dall, 1927). Holotype, USNM 108044. A, C, E–H, J, L. Shell in frontal view. B, I. Shell in lateral view. K, M. Protoconch in apical view. Scale bars: A–J, L. 1 mm; K, M. 200 μm. Credits: A–G. NHMUK photographic unit; J–M. USNM.