Calcinus pulcher Forest, 1958

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 : 29-31

Calcinus pulcher Forest, 1958

( Fig. 2A )

Calcinus pulcher Forest, 1958: 287–288 (Nha Trang, Vietnam, type locality); Haig & Ball, 1988: 161; Morgan, 1991: 896–898, Figs. 43–45; McLaughlin et al., 2007: 178–179, 2 unlabelled figures; Malay & Paulay, 2010: Appendix S1; Poupin, 2016: 48, Fig. 5 .

Material examined. 1 female SL 2.5 mm ( ZRC), stn B5, Biking, Panglao I., 9°35.2′N, 123°50.4′E, 4 m, 2.vi.2004 ; 2 males SL 1.5–2.3 mm ( ZRC), stn B9, Napaling, Panglao I., 9°33.1′N, 123°44.0′E, 8.5–10 m, 8.vi.2004 ; 2 males SL 2.4– 2.6 mm ( ZRC), stn B12, Doljo Point, Panglao I., 9°35.6′N, 123°43.2′E, 24–27 m, 14.vi.2004 ; 2 males SL 3.0– 3.1 mm ( ZRC), stn B16, Bingag, Panglao I., 9°37.6′N, 123°47.3′E, 20 m, 17.vi.2004 ; 1 indiv. in shell ( ZRC), stn B19, Pamilacan I., 9°29.4′N, 123°56.0′E, 17 m, 21.vi.2004 ; 1 ovig. female SL 3.6 mm, 1 indiv. in shell ( ZRC), stn B39, Pontod Lagoon 1,, Panglao I., 9°32.8′N, 123°42.1′E, 17–25 m, 2.vii.2004 ; 1 female SL 4.4 mm, 2 males SL 3.8–4.4 mm ( ZRC), stn R1, Balicasag I., 9°31.2′N, 123°41.3′E, 5–7 m, 30.v.2004 ; 3 ovig. females SL 2.2–4.0 mm, 5 males 2.9–5.6 mm ( ZRC), stn R3, Alona Reef, Panglao I., 9°33.0′N, 123°46.5′E, 5–24 m, v.2004 to vii.2004; 1 male SL 3.7 mm ( ZRC), stn R8, House Reef, Panglao I., 9°31.2′N, 123°41.3′E, 4–24 m, v.2004 to vii.2004; 2 males SL 3.0– 5.8 mm ( ZRC), stn R8, House Reef, Panglao I., 9°31.2′N, 123°41.3′E, 4–24 m, v.2004 to vii.2004; 1 ovig. female SL 3.6 mm, 1 male SL 3.5 mm ( ZRC), stn R10, Biking, Panglao I., 9°35.3′N, 123°50.5′E, 2–10 m, 1.vi.2004 ; 1 female SL 4.0 mm, 1 male SL 3.5 mm ( ZRC), stn R11, Biking, Panglao I., 9°35.2′N, 123°50.5′E, 4 m, 2.vi.2004 ; 1 male SL 3.1 mm ( ZRC), stn R13, Doljo Point, Panglao I., 9°35.6′N, 123°43.2′E, 2–41 m, 2.vi.2004 ; 1 female SL 3.6 mm ( ZRC), stn R14, Baclayon, Bohol I., 9°37.4′N, 123°54.5′E, 6–8 m, 3.vi.2004 ; 1 male 3.0 mm ( ZRC), stn R15, Arco Point, Panglao I., 9°33.5′N, 123°48.6′E, 6–30 m, 3.vi.2004 ; 1 female SL 3.4 mm ( ZRC), stn R16, Black Forest , Panglao I., 9°31.1′N, 123°41.3′E, 6–22 m, 4.vi.2004 ; 1 ovig. female SL 3.1 mm ( ZRC), stn R17, Black Forest , Panglao I., 9°31.1′N, 123°41.3′E, 3–15 m, 4.vi.2004 ; 1 male SL 4.8 mm ( ZRC), stn R24, Bingag, Panglao I., 9°37.5′N, 123°46.8′E, 0–2 m, 6.vi.2004 ; 1 male SL 3.5 mm ( ZRC), stn R24, Bingag, Panglao I., 9°37.5′N, 123°46.8′E, 0–2 m, 6.vi.2004 ; 2 ovig. females SL 2.9–5.1 mm, 2 males SL 4.3–4.4 mm ( ZRC), stn R27, Napaling, Panglao I., 9°37.0′N, 123°46.3′E, 2–20 m, 7.vi.2004 ; 1 male SL 5.6 mm ( ZRC), stn R36, Pamilacan I., 9°30.2′N, 123°55.3′E, 3–32 m, 9.vi.2004 ; 2 males SL 4.0– 5.5 mm ( ZRC), stn R37, Momo Beach, Panglao I., 9°36.5′N, 123°45.6′E, 28–32 m, 10.vi.2004 ; 4 males SL 4.5–5.0 mm ( ZRC), stn R43, Cortes Takot, Bohol I., 9°41.3′N, 123°49.5′E, 3–41 m, 13.vi.2004 ; 1 female SL 3.5 mm ( ZRC), stn R48, Bingag, Panglao I., 9°37.6 N, 123°47.3′E, 4–20 m, 17.vi.2004 ; 2 females SL 3.5 mm, 2 males SL 3.5–4.5 mm ( ZRC), stn R49, San Isidro, Panglao I., 9°34.6′N, 123°49.9′E, 1–32 m, 17.vi.2004 ; 2 males SL 4.2–4.5 mm ( ZRC), stn R57, Lagoon, 9°34.8′N, 123°42.7′E, 1–2 m, 21.vi.2004 ; 1 male SL 4.6 mm, 1 indiv. in shell ( ZRC), stn R59, Momo Beach, Panglao I., 9°36.2′N, 123°44.9′E, 2–20 m, 22.vi.2004 ; 1 female SL 3.3 mm ( ZRC), stn R70, Pamilacan I., 9°30.1′N, 123°55.5′E, 20 m, 1.vii.2004 ; 1 female SL 3.9 mm ( ZRC), stn R71, Arco Point, Panglao I., 9°34.1′N, 123°48.9′E, 2–20 m, 1.vii.2004 ; 2 females SL 4.0– 4.3 mm, 2 males SL 3.6–4.9 mm, 1 indiv. in shell ( ZRC), stn R73, Balicasag I., 9°30.9′N, 123°40.8′E, 2–30 m, 2.vii.2004 ; 5 indivs. in shell, stn R75, west of Pontod , Panglao I., 9°32.8′N, 123°42.1′E, 3–35 m, 3.vii.2004 ; 1 ovig. female SL 2.9 mm, 2 females SL 2.9–3.6 mm, 1 male SL 3.6 mm ( ZRC), stn R77, between Momo and Napaling , Panglao I., 9°37.0′N, 123°46.0′E, 2–10 m, 6.vii.2004 ; 1 ovig. female SL 3.1 mm, 1 male SL 2.5 mm, 1 indiv. in shell ( ZRC), stn S12, Pamilacan I., 9°29.4′N, 123°56.0′E, 6–8 m, 14.vi.2004 ; 1 indiv. in shell ( ZRC), stn S17, San Isidro, Panglao I., 9°34.6′N, 123°49.9′E, 6 m, 17.vi.2004 ; 1 male SL 5.5 mm ( ZRC), stn S24, Momo Beach, Panglao I., 9°36.1′N, 123°45.0′E, 2–4 m, 22.vi.2004 .

Habitat. Subtidal, 2–41 m deep, on reef flats, slopes, plateaus, and caves, on coral, rubble, and mixed sand-coral substrates.

Remarks. Calcinus pulcher has a cryptic form, apparently restricted to the Western Indian Ocean, that lacks the bright red patches on the carpi of the second pereopods characteristic of the typical Western Pacific colour morph ( Malay & Paulay, 2010: Fig. 13; Poupin, 2016: Fig. 5 ). The cryptic colour morph is genetically distinct from typical C. pulcher ( Malay and Paulay, 2010) .

Figures

Fig. 2. A, Calcinus pulcher Forest, 1958. Male SL 4.8 mm, stn R24; B, Clibanarius ambonensis Rahayu & Forest, 1993. Male SL 4.0 mm, stn M16; C, Clibanarius antennatus Rahayu & Forest, 1993. Male SL 3.9 mm, stn M34; D, Clibanarius corallinus (H. Milne Edwards, 1836). Male SL 3.0 mm, stn M58; E, Clibanarius cruentatus (H. Milne Edwards, 1848). Specimen not measured and sexed, Stn M2; F, Clibanarius englaucus Ball & Haig, 1972. Male SL 4.2 mm, stn M1; G, Clibanarius infraspinatus (Hilgendorf, 1869). Male SL 9.0 mm, stn S53; H, Clibanarius laevimanus Buitendijk, 1937. Specimen not measured and sexed, stn M9.

Fig. 5. Lateral view of left third pereopod. A, Dardanus lagopodes (Forskål, 1775). Male SL 9.8 mm, stn N2, ZRC 2015.0489; B, Dardanus lagopodes (Forskål, 1775). Female SL 7.6 mm, stn R1, ZRC 2015.0488; C, Dardanus sanguinolentus (Quoy & Gaimard, 1824). Male SL 7.8 mm, stn R38, ZRC 2015.0491; D, Dardanus balhibuon, new species, holotype. Female SL 14.3 mm, stn R38, NMCR 40109. Scale bars = 1 mm.