Clibanarius longitarsus (De Haan, 1849)

Malay, Maria Celia (Machel) D., Rahayu, Dwi Listyo & Chan, Tin-Yam, 2018, Hermit crabs of the genera Calcinus Dana, Clibanarius Dana, and Dardanus Paul’son from the PANGLAO 2004 Expedition, with description of a new species and a checklist of the hermit crabs of the Philippines (Crustacea: Anomura: Paguroidea), Raffles Bulletin of Zoology 66, pp. 23-65 : 33-35

Clibanarius longitarsus (De Haan, 1849)

( Fig. 3A )

Pagurus longitarsus De Haan, 1849: 211 , Fig. 3 , pl. 50 ( Japan, type locality).

? Pagurus asper H. Milne Edwards, 1848: 62 , 63 (Indian Ocean, type locality).

Clibanarius longitarsus – Buitendijk, 1937: 253–254; Fize & Serène, 1955: 83–90, fig, 11; Haig & Ball, 1988: 163; McLaughlin et al., 2007: 119–120, 2 unlabelled figures; Rahayu, 2003: 100–101.

Material examined. 19 females SL 4.4–7.8 mm, 17 males SL 5.2–9.5 mm, 1 indiv. in shell ( ZRC), stn M9, inside lagoon near Doljo Point, Panglao I., 9°35.1′N, 123°43.6′E, 0–0.5 m, 4.vi.2004 ; 2 females SL 4.6–6.1 mm, 8 males SL 3.2–8.2 mm, 8 indivs. in shell ( ZRC), stn M11, Sungcolan Bay, Panglao I., 9°38.3′N, 123°49.6′E, 0–3 m, 6.vi.2004 ; 1 female SL 6.0 mm ( ZRC), stn M16, Sungcolan inlet, Panglao I., 9°38.2′N, 123°50.3′E, 0–1 m, 9.vi.2004 ; 1 female SL 8.2 mm ( ZRC), stn M19, Pamilacan I., 9°30.0′N, 123°55.3′E, 0–2 m, 11.vi.2004 ; 1 ovig. female SL 5.6 mm, 2 males SL 3.4–5.1 mm ( ZRC), stn M23, Bingag / Tabalong, Panglao I., 9°37.8′N, 123°48.4′E, 0–1 m, 16.vi.2004 ; 1 female SL 5.6 mm, 4 males SL 4.5–5.5 mm ( ZRC), stn M24, Manga, Panglao I., 9°42.1′N, 123°51.3′E, 0–1 m, 17.vi.2004 ; 1 male SL 6.3 mm ( ZRC), stn M25, Danao, Panglao I., 9°33.1′N, 123°44.6′E, 0–1 m, 17.vi.2004 ; 3 males SL 4.0– 6.5 mm ( ZRC), stn M27, north of Abatan River , Bohol I., 9°43.6′N, 123°51.2′E, 0–1 m, 23.vi.2004 ; 1 male SL 3.7 mm ( ZRC), stn M28, Abatan River , Bohol I., 9°44.5′N, 123°53.8′E, 0–1 m, 23.vi.2004 ; 3 females SL 4.0– 5.6 mm, 2 males SL 3.8–4.1 mm ( ZRC), stn M30, mouth of Abatan River , Bohol I., 9°43.1′N, 123°51.5′E, 0–1 m, 24.vi.2004 ; 2 indivs. in shell, stn M41, Abatan River , Bohol I., 9°43.9′N, 123°52.3′E, 0 m, 28.vi.2004 ; 1 ovig. female SL 3.9 mm, 2 males SL 2.1–5.2 mm ( ZRC), stn M42, Abatan River , Bohol I., 9°43.9′N, 123°53.4′E, 0–1 m, 28.vi.2004 ; 1 female SL 3.0 mm, 6 males SL 2.9–6.4 mm, 2 indivs. in shell ( ZRC), stn M44, inner part of Danao embayment, 9°33.1′N, 123°44.9′E, 0 m, 29.vi.2004 ; 1 male SL 5.2 mm ( ZRC), stn M46, Abatan River , Bohol I., 9°44.8′N, 123°55.5′E, 0–1 m, 29.vi.2004 ; 1 female SL 3.5 mm ( ZRC), stn M50, Abatan River , Bohol I., 9°43.2′N, 123°52.3′E, 0 m, 30.vi.2004 ; 1 female SL 6.3 mm, 5 males SL 3.0–7.0 mm ( ZRC), stn M51, Mayacabac, Panglao I., 9°36.8′N, 123°52.2′E, 0 m, 30.vi.2004 ; 2 females SL 1.1–3.8 mm, 1 male SL 7.3 mm ( ZRC), stn M52, mouth of Danao embayment, Panglao I., 9°34.2′N, 123°44.9′E, 0–1m, 30.vi.2004 ; 1 male SL 7.8 mm ( ZRC), stn M53, Mayacabac, Panglao I., 9°36.8′N, 123°52.2′E, 0 m, 2.vii.2004 ; 2 males SL 7.3–8.1 mm ( ZRC), stn S33, Abatan River Estuary, Bohol I., 9°43.8′N, 123°52.7′E, 1–3 m, 28.vi.2004 ; 1 male SL 3.5 mm ( ZRC), stn S47, Abatan River , Bohol I., 9°43.9′N, 123°52.5′E, 2–8 m, 3.vii.2004 .

Habitat. Brackish intertidal, river mouths, fringing mangroves, and nipa palms, on sandy, rocky, and sand-mud substrates.

Remarks. Rahayu (2003) noted that Cl. longitarsus has very variable colouration, however the longitudinal blue stripe on the lateral face of ambulatory legs, a specific character of this species, is always present, even after long periods of preservation in alcohol. This species is reported for the first time in the Philippines.

Figures

Fig. 3. A, Clibanarius longitarsus (De Haan, 1849). Specimen not measured and sexed, stn M52; B, Clibanarius merguiensis De Man, 1888. Male SL 3.5 mm, stn M51; C, Clibanarius serenei Rahayu & Forest, 1993. Male SL 3.6 mm, stn M11; D, Clibanarius snelliusi Buitendijk, 1937. Male SL 5.3 mm, stn M1; E, Clibanarius striolatus Dana, 1852. Specimen not measured and sexed, stn M9; F, Clibanarius virescens (Krauss, 1843). Male SL 4.1 mm, stn M8; G, Dardanus deformis (H. Milne Edwards, 1836). Female SL 8.8 mm, stn M3; H, Dardanus lagopodes (Forskål, 1775). Female SL 6.6 mm, stn M8.