Mystivagor mastersi Iredale, 1944: 317

Hyman, Isabel T. & Köhler, Frank, 2024, Size does matter: integrative taxonomy and size evolution of threatened charopid land snails on Lord Howe Island (Gastropoda: Stylommatophora), Organisms Diversity & Evolution 24 (3), pp. 257-312 : 303-304

publication ID	https://doi.org/10.1007/s13127-024-00644-z
persistent identifier	https://treatment.plazi.org/id/039CA710-356C-FFD1-FC86-FA91FF374255
treatment provided by	Felipe
scientific name	Mystivagor mastersi Iredale, 1944: 317
status

Treatment

Mystivagor mastersi Iredale, 1944: 317 View in CoL ; Stanisic et al., 2010: 270–271; Hyman & Köhler, 2020a, b: 74.

Description

External morphology. Shell ( Figs. 26d View Fig , 27d View Fig ) small (SW 5.6–5.7 mm, SH 5.4–6.7 mm; Table 3), 2.8–4.2 whorls, chestnut brown with cream-coloured, zigzagging flammulations. Globosely ear-shaped with a reduced shell, rapidly increasing last whorl and wide aperture; whorls and periphery rounded; sutures impressed. Protoconch with regular, widely spaced radial ribs; teleoconch with rugose surface but no distinct ribs. Aperture teardrop-shaped, umbilicus absent. Body colour ( Fig. 31d–e) dark grey with paler grey sole.

Reproductive system ( Figs. 5k View Fig , 33 View Fig ). Vagina moderately short; free oviduct moderate length. Penis short, tubular to bulbous, shorter and broader than epiphallus. Epiphallus coiled within penial tunica, entering the penis through a thickened ring. Penis with multiple irregular longitudinal pilasters.