Johora booliati Ng, 2020

Ng, Peter K. L., , Martyn E. Y. Low, Clark, & Paul F., 2022, Historical notes on various collectors of unidentified freshwater crabs (Crustacea: Decapoda: Brachyura) from the Malay Peninsula and Borneo, with descriptions of two new species of Isolapotamon Bott, 1968 Potamidae), Raffles Bulletin of Zoology 70, pp. 550-571 : 555

Johora booliati Ng, 2020

( Fig. 1)

Johora booliati Ng, 2020: 20 , figs. 1F, 2F, 3F, 4F, 5F, 10E–I, 12F, 13F, 14F.

Material examined. 1 male (31.8 × 26.8 mm), 1 juv. male, 1 juv. female ( NHM 2022.167 – 169 ), 213 m asl, in stream at base camp, Gunung Benom, Pahang, Peninsular Malaysia, coll. A.G.C. Grandison, British Museum/University of Malaysia Expedition (February–April 1967), March 1967 .

Remarks. Johora booliati has been misidentified as J. tahanensis ( Bott, 1966) for many years (see Bott, 1970; Ng, 1987a, 1988). Ng & Takeda (1992) first indicated this was a species-complex, with Ng (2020) eventually revising the group. Johora booliati was described from material from Bukit Tinggi in Bentong and Fraser’s Hill in Pahang, Peninsular Malaysia ( Ng, 2020: 20), and Gunung Benom is an adjacent mountain. The G1 structure of the present adult male ( Fig. 1D) agrees well with the original description, with the terminal segment relatively long and gently curved and the proximal part of the subterminal segment is broad (cf. Ng, 2020: fig. 10E–H). The one character that differs is the form of the posterior carapace margin; in the types, the median part is gently indented and the overall margin appears sinuous ( Ng, 2020: fig. 2F). In the present adult male specimen, the posterior carapace margin is gently concave ( Fig. 1A).