Calcinus latens ( Randall, 1840 )

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 : 28

Calcinus latens ( Randall, 1840)

( Fig. 1E )

Pagurus latens Randall, 1840: 135–136 (Hawai’i, type locality).

Calcinus terrae-reginae – Estampador, 1937: 505; Yap-Chiongco, 1938: 206–207; Estampador, 1959: 53.

Calcinus latens – Grant & McCulloch, 1906: 34–35; Estampador, 1937: 505; Yap-Chiongco, 1938: 207–208; Fize & Serène, 1955: 58–66, Fig. 9 , pl. 2 nos. 9–11; Estampador, 1959: 53; Ball & Haig, 1972: 101–102; Wooster, 1984: 154–156; Haig & Ball, 1988: 160; Morgan, 1991: 890–983, Figs. 34–36; Gherardi & McLaughlin, 1994: 622–624; Poupin, 1997: 703–704, Figs. 3H , 6C ; Hoover, 1998: 256, 1 unlabelled figure; McLaughlin et al., 2007: 167–169, 2 unlabelled figures; Malay & Paulay, 2010: Appendix S1.

Calcinus abrolhensis Morgan, 1988: 218–222 , Fig. 1 (Houtman Abrolhos, Australia, type locality).

Material examined. 1 male SL 2.8 mm ( ZRC), stn D5, Pontod Islet , Panglao I., 9°33.6′N, 123°43.5′E, 0–3 m, 6.vi.2004 ; 2 males SL 1.8–3.9 mm, 1 indiv. in shell ( ZRC), stn D8, Dao , Panglao I., 9°34.0′N, 123°48.9′E, 1–4 m, 9.vi.2004 ; 1 female SL 2.4 mm, 2 males SL 0.8–1.4 mm, 3 indivs. in shell ( ZRC), stn M1, Alona Beach , Panglao I., 9°32.9′N, 123°46.6′E, 0–1 m, v.2004 to vii.2004; 4 males SL 3.8–4.9 mm ( ZRC), stn M2, west end of Alona Beach , Panglao I., 9°32.8′N, 123°45.9′E, 0–2 m, 30.v.2004 ; 1 female SL 3.1 mm, 3 males SL 3.1–3.5 mm ( ZRC), stn M3, Danao , Panglao I., 9°32.5′/33.1′N, 123°44.7′/45.5′E, 0–2.5 m, 31.v.2004 ; 1 male SL 5.5 mm ( ZRC), stn M5, Doljo Point , Panglao I., 9°35.5′N, 123°43.3′/44.3′E, 0–2 m, v.2004 to vi.2004; 1 female SL 2.5 mm, 1 male SL 5.0 mm ( ZRC), stn M7, Momo Beach , Panglao I., 9°36.1′N, 123°45.2′E, 0–3 m, 1.vi.2004 ; 2 females SL 4.5–4.9 mm, 2 males SL 3.6–5.9 mm ( ZRC), stn M18, Gak-Ang Islet , off Panglao I., 9°33.0′N, 123°45.5′E, 0–1 m, 10 & 12.vi.2004 ; 1 female SL 2.5 mm, 1 male SL 3.1 mm ( ZRC), stn M20, Pamilacan I., 9°29.3′N, 123°55.1′E, 0–2 m, 13.vi.2004 ; 29 indivs. not sexed and measured ( ZRC), stn M25, Danao , Panglao I., 9°33.1′N, 123°44.6′E, 0–1 m, 17.vi.2004 ; 1 ovig. female SL 4.2 mm, 14 males SL 2.4–5.2 mm, 8 indivs. in shell ( ZRC), stn M51, Mayacabac , Panglao I., 9°36.8′N, 123°52.2′E, 0 m, 30.vi.2004 ; 3 males SL 1.3–2.9 mm ( ZRC), stn M58, Balicasag I., 9°31.3′N, 123°41.0′E, depth unknown, 4.vii.2004 ; 1 male SL 3.0 mm, stn R1, Balicasag I., 9°31.2′N, 123°41.3′E, 5–7 m, 30.v.2004 ; 1 male SL 2.6 mm ( ZRC), stn R10, Biking , Panglao I., 9°35.3′N, 123°50.5′E, 2–10 m, 1.vi.2004 ; 1 female 2.0 mm ( ZRC), stn R11, Biking , Panglao I., 9°35.2′N, 123°50.5′E, 4 m, 2.vi.2004 ; 1 male SL 3.9 mm ( ZRC), stn R24, Bingag , Panglao I., 9°37.5′N, 123°46.8′E, 0–2 m, 6.vi.2004 ; 2 females SL 3.6–4.5 mm ( ZRC), stn R36, Pamilacan I., 9°30.2′N, 123°55.3′E, 3–32 m, 9.vi.2004 ; 3 males SL 2.7–5.4 mm ( ZRC), stn R38, Pamilacan I., 9°29.4′N, 123°56.0′E, 6–37 m, 11.vi.2004 ; 1 male SL 5.4 mm ( ZRC), stn R44, lagoon near Doljo Point , Panglao I., 9°33.3′/34.6′N, 123°43.9′/43.4′E, 2 m, 14.vi.2004 ; 1 male SL 4.5 mm ( ZRC), stn R50, Looc , Panglao I., 9°35.7′N, 123°44.4′E, 3–7 m, 17.vi.2004 ; 1 male SL 3.4 mm ( ZRC), stn R53, Sungcolan Bay, Panglao I., 9°38.4′N, 123°49.7′E, 3–5 m, 20.vi.2004 ; 1 ovig. female SL 4.5 mm ( ZRC), stn R58, Looc (lagoon side), Panglao I., 1–3 m, 9°35.7′N, 123°44.7′E, 1–3 m, 22.vi.2004 ; 1 indiv. in shell ( ZRC), stn R66, Sungcolan inlet, Panglao I., 9°38.3′N, 123°50.3′E, 1–3 m, 28.vi.2004 .

Habitat. Intertidal to subtidal, 0 to approximately 10 m deep, reef flats, seagrass beds, and reef slopes, on sandy, sand-mud, rocky, coralline, and soft bottoms.

Remarks. Yap-Chiongco (1938) and Estampador (1937, 1959) report both C. latens and C. terrae-reginae from the Philippine waters. Calcinus terrae-reginae was synonymised with C. latens by Grant & McCulloch (1906).

Calcinus latens is apparently a species complex, with three distinct forms found in Hawai’i, the Gulf of Oman, and the wider Indo-West Pacific region ( Malay & Paulay, 2010). This species complex is very abundant throughout its range, and occupies a wide variety of different habitats.

Figures

Fig. 1. A, Calcinus elegans (H. Milne Edwards, 1836). Male SL 10.0 mm, stn M1; B, Calcinus fuscus Malay, Komai & Chan, 2012. Male SL 4.1 mm, stn B42; C, Calcinus gaimardii (H. Milne Edwards, 1848). Female SL 5.6 mm, stn R14; D, Calcinus laevimanus (Randall, 1840). Male SL 4.4 mm, stn M2; E, Calcinus latens (Randall, 1840). Male SL 3.0 mm, stn R1; F, Calcinus lineapropodus Morgan & Forest, 1991. Male SL 4.5 mm, stn R16; G, Calcinus minutus Buitendijk, 1937. Male SL 4.7 mm, stn R10; H, Calcinus morgani Rahayu & Forest, 1999. Female ovig SL 4.8 mm, stn M2.

Fig. 9. Maximum likelihood phylogram based on COI mitochondrial DNA sequences. Branch support for the major clades are indicated above (= likelihood bootstrap values) and below (= Bayesian posterior probabilities) the branches. Bootstrap values <70% were not reported.

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.

Fig. 6. Dardanus balhibuon, new species, holotype. Female SL 14.3 mm, stn R38, NMCR 40109. A, Shield and cephalic appendages; B, Interocular plate and right ocular acicle; C, Right antennal peduncle; D, Anterior lobe of sternite of third pereopods; E, Telson, dorsal view; F, Posterior lobes of telson, ventral view. Scale bars = 1 mm.