Parasesarma anambas Yeo, Rahayu & Ng, 2004

Lagare, Nickel Jean S., Mapi-Ot, Emmarie F., Molina, Ziljih S., Neri, Jemateo B., Nuñeza, Olga M. & Mendoza, Jose Christopher E., 2020, On a collection of freshwater and estuarine crabs (Crustacea: Brachyura) from Mindanao Island, the Philippines, Zootaxa 4868 (3), pp. 301-330 : 310

Parasesarma anambas Yeo, Rahayu & Ng, 2004

Figs. 3D , 6 A–D

Material examined. 1 male, 8.6 by 7.0 mm ( ZRC; NJL191801 ), Pocto I., Brgy. Manyayay, Lianga town , Surigao del Sur prov., coll. N. J. Lagare, 3 Mar. 2019 .

Remarks. Parasesarma anambas was described by Yeo et al. (2004) from the Anambas Islands in the southern portion of the South China Sea. It has also been recorded from Hainan, China (Li et al. 2019). The present specimen from Lianga, an adult male, agrees well with the holotype of P. anambas in the form of the carapace and G1 (cf. Yeo et al. 2004: figs. 2a, f), as well as in these particular morphological characters: 1) having long and slender ambulatory propodi and dactyli (cf. Yeo et al. 2004: fig. 2d); 2) having 17 oblong tubercles, each surmounted by a weak longitudinal crest, on the chelar dactylus (cf. Yeo et al. 2004: fig. 2b); and 3) having 3 pectinated crests on the upper surface of the cheliped palm (cf. Yeo et al. 2004: fig. 2b). Direct comparison with a similar-sized paratype male specimen (ZRC 2003.0726) of P. anambas , also confirmed this. The Lianga specimen was collected from a limestone outcrop surrounded by coastal mangrove, and comprises only the second record of this species outside the type locality.

New Philippine record.

Figures

FIGURE 3. Colour photos of recently preserved crabs (dorsal habitus). A, Neosarmatium asiaticum Ragionieri, Fratini & Schubart, 2012, male, 37.0 by 30.0 mm (ZRC), Sindangan, Zamboanga del Norte; B, Neosarmatium fourmanoiri Serène, 1973, male, 40.6 by 33.8mm (ZRC), Sindangan, Zamboanga del Norte; C, Neosarmatium indicum (A. Milne-Edwards, 1868), male, 14.4 by 12.1 mm (ZRC), Basilisa, Dinagat Island; D, Parasesarma anambas Yeo, Rahayu & Ng, 2004, male, 8.6 by 7.0 mm (ZRC), Lianga, Surigao del Sur; E, Leptarma jamelense (Rathbun, 1914), male, 10.6 by 9.3 mm (ZRC), Tagoloan, Misamis Oriental; F, Parasesarma kuekenthali (De Man, 1902), male, 15.4 by 13.0 mm (ZRC), Basilisa, Dinagat I. Scale bars: 10 mm.

FIGURE 6. A–D, Parasesarma anambas Yeo, Rahayu & Ng, 2004, male, 8.6 by 7.0 mm (ZRC), Lianga, Surigao del Sur; E–H, Leptarma jamelense (Rathbun, 1914), male, 10.6 by 9.3 mm (ZRC), Tagoloan, Misamis Oriental.A, E, left chela, external view; B, F, left chela, dorsal view; C, G, right G1, pleonal view; D, H, right G1, sternal view. Scales: A, B, E, F = 2.0 mm; C, D, G, H = 1.0 mm.