Dicharax dalingensis (Godwin-Austen, 1914)

Fig. 62A–E

Alycaeus dalingensis Godwin-Austen, 1914: 338–339, pl. 134 figs 3, 3a–c.

Alycaeus (Dicharax) dalingensis – Gude 1921: 246.

Dicharax (?) dalingensis – Páll-Gergely et al. 2020: 85.

Type material examined

INDIA • 7 syntypes (Fig. 62A–E); Rechila Pk, Sikkim; W. Robert leg.; NHMUK 1903.7.1.1251 .

Type locality

“Rechila Peak, Daling District, on Sikkim and Bhutan Boundary (10,300 ft.)”.

Differential diagnosis

The most similar species are D. lenticulus (Godwin-Austen, 1874), D. nongtungensis (Godwin-Austen, 1914) and D. politus (W.T. Blanford, 1865), due to the smooth shell surface and the long, inflated R3 swelling. Dicharax lenticulus is larger and has a more depressed shell. Dicharax nongtungensis is smaller, more depressed, and has a more strongly expanded outer peristome. Lastly, D. politus is much more depressed, its R2 ribs are separated (R2 surface is smooth in D. dalingensis), and has a more inflated R3 swelling. See also under D. ganeshaiahi sp. nov. and D. nattoungensis (Godwin-Austen, 1914) .