Dicharax birugosus ( Godwin-Austen, 1893 )

Dicharax birugosus ( Godwin-Austen, 1893) View in CoL

Fig. 60

Alycaeus View in CoL bi-rugosus Godwin-Austen, 1893: 593.

Alycaeus birugosus var. minor Godwin-Austen, 1914: 370 View in CoL , pl. 155 figs 9, 9a.

Alycaeus View in CoL bi-rugosus – Godwin-Austen 1897: 387, pl. 63 figs 5, 5a.

Alycaeus ( Dicharax) birugosus View in CoL – Kobelt 1902: 366.

Alycaeus birugosus View in CoL – Godwin-Austen 1914: 370, 387.

Alycaeus canaliculus Godwin-Austen, 1914: 371 View in CoL , pl. 154 fig. 11.

Alycaeus birugosus View in CoL var. – Godwin-Austen 1914: 370, pl. 154 figs 7, 7a.

Alycaeus ( Chamalycaeus) canaliculus View in CoL – Gude 1921: 225.

Alycaeus ( Dicharax) birugosus View in CoL – Gude 1921: 239–240.

Alycaeus ( Dicharax) birugosus var. minor View in CoL – Gude 1921: 240.

Chamalycaeus ( Chamalycaeus) canaliculus View in CoL – Ramakrishna et al. 2010: 53.

Chamalycaeus ( Dicharax) birugosus View in CoL – Ramakrishna et al. 2010: 57.

Dicharax (?) birugosus View in CoL – Páll-Gergely et al. 2020: 79 View Cited Treatment , fig. 19 (treated A. canaliculus View in CoL as a junior synonym).

Diagnosis

The characteristic, oblique main R3 swelling, and the small secondary swelling distinguish this species from its congeners. See under Dicharax umashaankeri sp. nov.

Type material examined

INDIA • 2 syntypes of A. birugosus ( Fig. 60A–E); Khasi Hills; Godwin-Austen leg.; NHMUK 1903.7.1.2628 • 1 syntype of Alycaeus birugosus var. minor (labelled as duorugosus var. minor ); Garo Hills; NHMUK 1903.7.1.2755 • 1 syntype of A. canaliculus ( Fig. 60F–J); Teria Ghat, Khasi; Godwin-Austen leg.; NHMUK 1903.7.1.2764.

Additional material examined

INDIA • 7 shells (labelled as “ birugosus var.”); Jawai, Jiantia Hills, 282a; Godwin-Austen leg., NHMUK 1903.7.1.2571.

Type localities

“Khasi Hills and Manipur ” ( A. birugosus ); “Garo Hills” ( A. birugosus var. minor ); “Teria Ghat, foot of the Khasi Hills” ( A. canaliculus ).