Dicharax stoliczkii (Godwin-Austen, 1874)

Fig. 82

Alycaeus Stoliczkii Godwin-Austen, 1874: 147, pl. 3 fig. 3.

Alycaeus (Charax) peilei Preston, 1914: 22–23, figure on page 23. Syn. nov.

Alycaeus stoliczkii – Sowerby 1877: pl. 6, species 53. — Godwin-Austen 1914: 399–400, pl. 144 figs 3, 3a–b.

Alycaeus (Chamalycaeus) stoliczkai [sic] – Kobelt 1902: 363. — Gude 1921: 233–234.

Alycaeus peilei – Godwin-Austen 1914: 397–398.

Alycaeus (Dicharax) peilei – Gude 1921: 264.

Chamalycaeus (Chamalycaeus) stoliczkai [sic] – Ramakrishna et al. 2010: 55.

Chamalycaeus (Dicharax) peilei – Ramakrishna et al. 2010: 65.

Dicharax (?) peilei – Páll-Gergely et al. 2020: 101.

Dicharax (?) stoliczkii – Páll-Gergely et al. 2020: 104.

Diagnosis

The large shell size, the long R2+R3, and the aperture shape distinguish this species from all other Alycaeinae .

Type material examined

INDIA • 3 syntypes of A. stoliczkii (Fig. 82A–E); Naga Hills; NHMUK 1903.7.1.2622 • 1 syntype of A. peilei (Fig. 82F–J); Naga Hills; Preston coll.; NHMUK 1915.1.4.1281 .

Type localities

“Angaoluo Peak, Nágá Hills at 7,000 feet ”; “further to the east at Kezakenomih, and at the head of the Lanier River at ca. 5,000 feet where the specimens are much larger” ( A. stoliczkii); “ Naga Hills” ( A. peilei).

Differential diagnosis

The most similar species is D. glaber, but D. stoliczkii has a more oval shell (rather rounded in D. glaber), a fringed aperture and a secondary swelling touching the penultimate whorl near the peristome.

Remarks

Alycaeus (Charax) peilei is identical with Alycaeus stoliczkii and therefore it is treated as a junior synonym. In the original description of the first species, Preston (1914) did not compare his new species with any other species.