Dicharax digitatus (H.F. Blanford, 1871)

Fig. 34K–O

Alycaeus digitatus H.F. Blanford, 1871: 41–42, pl. 2 fig. 4.

Alycaeus (Dicharax) digitatus – Kobelt 1902: 369. — Gude 1921: 248.

Alycaeus digitatus – Godwin-Austen 1914: 339–340, pl. 134 figs 5, 5a.

Chamalycaeus (Dicharax) digitatus – Ramakrishna et al. 2010: 59.

Dicharax digitatus – Páll-Gergely et al. 2020: 59.

Diagnosis

The high and short R3 swelling, which is situated close to the outer peristome, the strongly fringed inner peristome, the large distance between the inner and outer peristomes, and the protruding finger-like projections on the inner peristome distinguish this species from all congeners.

Material examined

INDIA • 1 shell (probably not syntype, but figured by Godwin-Austen 1914; Fig. 34K–O); Rechila Pk, Sikkim; W. Robert leg.; NHMUK 1903.7.1.1253 .

Type locality

“apud Darjeeling in vallo Rungno fluminis Himalayae Sikkimensis”.

Differential diagnosis

Other species of this species group may also have finger-like projections of the peristome ( D. cucullatus, D. ochraceus, D. plectocheilus, D. tangmaiensis), but in those cases the outer peristome ‘follows’ the projections, while in D. digitatus the outer peristome stops at a single, straight line. See also under D. bicrenatus .