Dicharax digitatus (H.F. Blanford, 1871 )

Dicharax digitatus (H.F. Blanford, 1871) View in CoL

Fig. 34K–O

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

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

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

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

Dicharax digitatus View in CoL – Páll-Gergely et al. 2020: 59 View Cited Treatment .

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 About NHMUK .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 .