Calcinus minutus Buitendijk, 1937

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

Calcinus minutus Buitendijk, 1937

( Fig. 1G )

Calcinus minutus Buitendijk, 1937: 269–271 , Figs. 13–15 (Kera, near Timor, Indonesia, type locality); Forest, 1958: 185–190, Figs. 1 , 6–8 , 14, 18; Ball & Haig, 1972: 102; Wooster, 1984: 152–154; Haig & Ball, 1988: 160–161; Morgan, 1991: 894–896, Figs. 40–42; Poupin, 1997: 704–706, Fig. 6A ; McLaughlin et al., 2007: 172–173, 2 unlabelled figures; Malay & Paulay, 2010: Appendix S1.

Material examined. 3 males SL 3.8–6.2 mm, 1 damaged indiv. ( ZRC), stn M1, Alona Beach, Panglao I., 9°32.9′N, 123°46.6′E, 0–1 m, v.2004 to vii.2004; 1 male SL 3.6 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 ovig. female SL 5.8 mm, 1 male SL 4.5 mm ( ZRC), stn M8, Doljo, north coast, Panglao I., 9°35.4′N, 123°44.3′E, 0–1 m, 2.vi.2004 ; 2 females SL 3.6–5.0 mm, 1 male SL 4.8 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 3.1 mm, 1 male SL 6.1 mm ( ZRC), stn M19, Pamilacan I., 9°30.0′N, 123°55.3′E, 0–2 m, 11.vi.2004 ; 1 ovig. female SL 3.9 mm, 1 female SL 3.0 mm, 1 male SL 3.7 mm ( ZRC), stn N4, Alona Reef, Panglao I., 9°32.9′N, 123°46.9′E, 15–20 m, 10.vi.2004 ; 1 male SL 3.0 mm ( ZRC), stn N5, Alona Reef, Panglao I., 9°32.9′N, 123°46.9′E, 20–35 m, 10.vi.2004 ; 2 males SL 2.1–3.3 mm ( ZRC), stn R1, Balicasag I., 9°31.2′N, 123°41.3′E, 5–7 m, 30.v.2004 ; 2 females SL 3.6–3.7 mm ( ZRC), stn R8, House Reef, Panglao I., 9°31.2′N, 123°41.3′E, 4–24 m, v.2004 to vii.2004; 1 male SL 4.7 mm ( ZRC), stn R10, Biking, Panglao I., 9 °35.3′N, 123°50.5′E, 2–10 m, 1.vi.2004 ; 2 females SL 3.0– 3.5 mm ( ZRC), stn R23, lagoon off Poblacion, Panglao I., 9°33.5′/34.8′N, 123°42.7′/46.3′E, 1–5 m, 5, 6, & 21.vi.2004 ; 1 male SL 5.7 mm ( ZRC), stn R38, Pamilacan I., 9°29.4′N, 123°56.0′E, 6–37 m, 11.vi.2004 ; 1 female SL 3.5 mm ( ZRC), stn R49, San Isidro, Panglao I., 9°34.6′N, 123°49.9′E, 1–32 m, 17.vi.2004 ; 1 ovig. female SL 3.5 mm ( ZRC), stn R61, between Dao and San Isidro, Panglao I., 9°34.3′N, 123°49.3′E, 4–22 m, 23.vi.2004 ; 2 ovig. females SL 3.9–4.0 mm ( ZRC), stn R70, Pamilacan I., 9°30.1′N, 123°55.5′E, 20 m, 1.vii.2004 ; 1 male SL 3.4 mm ( ZRC), stn R71, Arco Point, Panglao I., 9°34.1′N, 123°48.9′E, 2–20 m, 1.vii.2004 ; 8 indivs. in shell ( ZRC), stn R73, Balicasag I., 9°30.9′N, 123°40.8′E, 2–30 m, 2.vii.2004 ; 1 female SL 3.4 mm ( ZRC), stn S12, Pamilacan I., 9°29.4′N, 123°56.0′E, 6–8 m, 14.vi.2004 .

Habitat. Mostly subtidal, occasionally intertidal, 0 to approximately 15 m deep, reef slopes and flats, on coralline, mixed seagrass-coral and sand-coral substrates. Facultative associate of live branching corals (e.g., Acropora , Pocillopora ).

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. 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.

Fig. 7. Dardanus balhibuon, new species, holotype. Female SL 14.3 mm, stn R38, NMCR 40109. A, Left cheliped, outer view; B, Left cheliped, inner view; C, Right cheliped, outer view; D, Right cheliped, inner view. Scale bars = 1 mm.

Fig. 8. Dardanus balhibuon, new species, holotype. Female SL 14.3 mm, stn R38, NMCR 40109. A, Left second pereopod, lateral view; B, Propodus of left third pereopod, lateral view. Scale bars = 1 mm.