Atydina atyoides (Nobili, 1900)

Atydina atyoides (Nobili, 1900) View in CoL

Caridina atyoides Nobili, 1900 View in CoL [ 51]: 478.—Bouvier, 1905 [ 89]: 78 (key); 1925 [ 72]: 256, figs. 587–592.—Roux, 1928 [ 47]: 205.—Chace, 1997 [ 20]; 7.

Atydina atyoides View in CoL — Cai, 2010 [ 91]: 76, figs. 1, 2.

Material examined:

PHILIPPINES — 1 specimen; small mountain river NE of summit, Ulasan, Bgy. Harrison, Paluan, Mt. Calavite, Occidental Mindoro; 13.4542, 120.425; 10.09.1998; coll. Freitag; ZMB ( DNA 967).

Comparative material:

INDONESIA — Holotype: 1♂, cl 6.5 mm; Si Oban, Sipura Island, Mentawei Archipelago; coll. E. Modigliani; MSNG.— 1♂, cl 10.7 mm and 1♀, cl 9.4 mm; River Teobak, Western Ceram, Moluccas; 02.1910; coll. de Beaufort; RMNH. CRUS.D.202877.

Habitat: This species is found in the middle course of rivers.

Distribution: On Mindoro: Locality no. 1. Indonesia (Si Oban and Ceram) and the Philippines.

Remarks:

New record for the Philippines. Despite being immature, our specimens agree well with the measurements of the holotype and the specimens from Ceram re-described by Cai (2010) [ 91]. Both molecular and morphological data point towards placing this species within the Caridina weberi species group. The taxonomy of the genus Caridina is under revision, it is still not clear whether the genus Atydina should become a junior synonym of Caridina or be extended to cover the entire Caridina weberi species group erected to generic status. For the time being, we choose to keep the status quo, awaiting the formal revision.

This species has been assessed as Data Deficient for the IUCN Red List (De Grave et al., 2013 [ 92]).