Dicharax habiangensis (Godwin-Austen, 1914)

Dicharax habiangensis (Godwin-Austen, 1914) View in CoL

Fig. 54

Alycaeus habiangensis Godwin-Austen, 1914: 374 View in CoL , pl. 138 figs 2, 2a–b.

Alycaeus generosus Godwin-Austen, 1914: 374 View in CoL , pl. 138 figs 8, 8a–b. Syn. nov.

Alycaeus ( Dicharax) habiangensis View in CoL – Gude 1921: 254.

Alycaeus ( Cycloryx) generosus View in CoL – Gude 1921: 279.

Chamalycaeus ( Dicharax) habiangensis View in CoL – Ramakrishna et al. 2010: 61.

Cycloryx generosus View in CoL – Ramakrishna et al. 2010: 71.

Dicharax generosus View in CoL – Páll-Gergely et al. 2020: 63 View Cited Treatment .

Dicharax habiangensis View in CoL – Páll-Gergely et al. 2020: 63 View Cited Treatment .

Type material examined

INDIA • holotype (single shell mentioned in the original description: Fig. 54A–E) of A. habiangensis ; Habiang Garo, W. Khasi; Godwin-Austen leg.; NHMUK 1903.7 About NHMUK .1.2649 • 2 syntypes of A. generosus ( Fig. 54F–J); Khasi Hills, Godwin-Austen coll.; NHMUK 1903.7 About NHMUK .1.2566 .

Type localities

“Habiang Garo, on the West Khasi border” ( A. habiangensis ); “Khasi Hills” ( A. generosus ).

Differential diagnosis

Both D. subculmen and D. diagonius have a longer R2, a ribbed R1, and a less bulging R3. See also under D. nitidus .

Remarks

The only difference between the two syntypes of A. generosus and the single, subadult syntype of A. habiangensis is the very slightly shallower R3 dent of the latter, suggesting that they represent the same species. The original description of A. habiangensis immediately followed that of A. generosus , and in the face of the nearly identical shells, they were not compared with each other; except for the umbilical view, they were not illustrated from the same views. We selected A. habiangensis to be the accepted name because it is known from a more precise locality than A. generosus .