Aclis dalli Bartsch, 1911

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 : 481

Aclis dalli Bartsch, 1911 —revalidated

Fig. 16

Aclis dalli Bartsch, 1911: 435 , pl. 59, Fig. 2 .

Type material. Holotype (herein examined): USNM 94288 .

Type locality. Cuba: Blake Collection ; 1426 m; W. H. Rush coll.

Material examined. The holotype and: USA: off Georgia: USFC sta. 2668, 30°58′30″N, 79°38′30″W, 538 m, Steamer Albatross coll.: USNM 108042 .

Remarks. MolluscaBase (2021a) currently considers Aclis dalli Bartsch, 1911 , from Cuba, ( Fig. 16 ) as a junior synonym of A. sarissa , but there is no reference to the publication in which such synonymy is discussed. These species resemble each other by the convexity of teleoconch whorls and by the slightly oval aperture. However, A. sarissa is considerably shorter, narrower and with a wider apex than A. dalli , which should be considered as a valid species.

Figures

FIGURE 2. Aclis sarissa Watson, 1881. A–C, E. Lectotype, NHMUK 1887.2.9.1576, herein designated; D. Paralectotype, NHMUK 1887.2.9.1576; F–I. Paralectotype, NMW 1955.158.26255; J–K. Holotype of Aclis carolinensis, USNM 83743. A, D, F, J. Shell in frontal view; B, G, K. Shell in lateral view. C, H. Shell in dorsal view. E, I. Body whorl in frontal view. Scale bars: A–D, F–H, I–J. 1 mm; E, I. 500 μm. Credits: A–E. NHMUK photographic unit; F–I. NMW.

FIGURE 16. Aclis dalli Bartsch, 1911. A–C. Holotype, USNM 94288. D–F. USNM 108042. A, D–F. Shell in frontal view. B. Shell in lateral view. C. Detail of apical whorls. Scale bars: A, B, D–F. 1 mm; C. 200 μm.