Paramedaeus globosus Serène & Vadon, 1981

Mendoza, Jose Christopher E. & Ng, Peter K. L., 2010, The Euxanthine Crabs (Crustacea: Brachyura: Xanthidae) Of The Philippines, Raffles Bulletin of Zoology 58 (1), pp. 57-74 : 68-69

Paramedaeus globosus Serène & Vadon, 1981

( Fig. 2D )

Paramedaeus planifrons globosus Serène & Vadon, 1981: 130 , Pl. 3 Fig. A.

Material examined. – 1 male, 3.2 × 2.6 mm ( ZRC 2008.1402 ), Stn. P 2, local fishermen with tangle nets, 400 m, 9°39.0'N 123°43.8'E, Maribojoc Bay , Bohol Is., coll. PANGLAO 2004

Marine Biodiversity Project, 30 May 2004; 1 male, 8.9 × 6.6 mm (NMCR-27351), 5 males, 3.1 × 2.5 mm to 5.6 × 4.3 mm, 7 females, 3.3 × 2.6 mm to 7.2 × 5.4 mm, 4 juv., 2.4 × 2.1 mm to 3.2 × 2.5 mm ( ZRC 2008.1403 ), Stn. T1 , mud and many sponges , 83–102 m, 9°32.4'N 123°47.3'E, Bolod, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 30 May 2004 ; 1 male, 9.2 × 6.8 mm ( MNHN-B30705 ) , 2 males, 5.5 × 4.3 mm to 7.7 × 5.9 mm, 3 females, 4.7 × 3.6 to 7.4 × 5.6 mm ( ZRC 2008.1404 ), Stn. T2 , coarse sand , 152 m, 9°32.4'N 123°47.8'E, Bolod, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 31 May 2004 ; 7 males, 4.1 × 3.1 mm to 5.8 × 4.6 mm, 5 females, 3.9 × 3.0 mm to 5.4 × 4.2 mm, 1 juv., 2.5 × 2.1 mm (NMCR-27352), Stn. T4 , many large sponges , 82 m, 9°33.0'N 123°48.5'E, Bolod, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 01 Jun.2004 ; 1 male, 4.4 × 3.4 mm, 2 females, 5.7 × 4.3 mm to 8.1 × 6.1 mm ( ZRC 2008.1405 ), Stn. T5 , coarse muddy sand , 84–87 m, 9°35.3'N 123°52.2'E, west of Baclayon, Bohol Is., coll. PANGLAO 2004 Marine Biodiversity Project , 02 Jul.2004 ; 12 males, 4.3 × 3.3 mm to 6.2 × 4.9 mm, 4 females, 4.5 × 3.4 mm to 5.5 × 4.2 mm, 1 ovig. female, 4.6 × 3.5 mm ( ZRC 2008.1406 ), Stn. T9 , fine sand with seagrass , 97–120 m, 9°33.5’/ 9°33.9'N 123°49.5'/ 123°50.5'E, off San Isidro, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 14 Jun.2004 ; 1 female, 5.9 × 4.5 mm (NMCR-27353), Stn. T10 , mud and fine sand , 117–124 m, 9°33.4'/ 9°33.8'N 123°49.6'/ 123°51.5'E, off San Isidro, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 15 Jun.2004 ; 1 male, 6.1 × 4.7 mm ( ZRC 2008.1407 ), Stn. T19 , mud , 10–26 m, 9°42.2'N 123°50.8'E, Cortes, Bohol Is., coll. PANGLAO 2004 Biodiversity Project , 20 Jun.2004 ; 1 male, 5.9 × 4.6 mm (NMCR-27354), Stn. T28 , muddy sand , 80 m, 9°35.0'N 123°51.4'E, Biking-Catarman, Panglao Is., coll. PANGLAO 2004 Biodiversity Project , 01 Jul.2004 ; 1 male, 7.4 × 5.2 mm, 1 female, 4.7 × 3.4 mm ( MNHN-B30706 ), Stn. T29 , mud , 77–84 m, 9°34.5'N 123°50.6'E, Biking, Panglao Is., coll. PANGLAO 2004 Marine Biodiversity Project , 01 Jul.2004 ; 2 males, 4.2 × 3.2 mm to 6.0 × 4.6 mm ( MNHN-B31891 ), Stn. T36 , sand bed with echinoderms , 95–128 m, 9°29.3'N 123°51.5'E, Cervera Shoal, west of Pamilacan Is., coll. PANGLAO 2004 Biodiversity Project , 04 July 2004 ; 2 females, 3.3 × 2.6 mm to 5.8 × 4.6 mm ( MNHN-B31892 ), Stn. T41 , 110 – 112 m, 9°29.7'N 123°50.2'E, Cervera Shoal, west of Pamilacan Is., coll. PANGLAO 2004 Marine Biodiversity Project , 06 July 2004 .

Remarks. – This species was first collected in the Philippines by the MUSORSTOM I expedition and described as a new subspecies of Paramedaeus planifrons Sakai, 1965 , by Serène & Vadon (1981) and then subsequently elevated to full species rank by Davie (1997). The holotype in MNHN cannot be located (R. Cleva, pers. comm.) and there are no paratypes. This species is one of the most abundant euxanthines collected from the Bohol Sea. It is found in a variety of habitats, but more commonly in muddy to sandy substrate, and often found where there are sponges and echinoderms. Individuals are quite variable in their live colour patterns, though the carapace and pereopods are basically white, with patches of light or dark brown, yellow- or reddish-orange. The fingers of the chelae are dark brown throughout their length, though not extending into the palm. Outside the Philippines, Paramedaeus globosus has also been collected from New Caledonia and the Loyalty Islands ( Davie, 1997).

Figures

Fig. 2. Live colouration of euxanthine crabs from the Philippines: A, Hypocolpus haanii Rathbun, 1909, male juv., (11.5 × 8.0 mm) (B11, Pamilacan Is., ZRC 2008.1383); B, Ladomedaeus fungillus Manuel-Santos & Ng, 2007, male juv. (9.7 × 7.0 mm) (CP2708, ZRC 2008.1389); C, Miersiella cavifrons Takeda, 1989, male (9.8 × 6.6 mm) (L36, Panglao Is., ZRC 2008.1391); D, Paramedaeus globosus Serène & Vadon, 1981, male (6.0 × 4.6 mm) (T36, Cervera Shoal, MNHN-B31891); E, Paramedaeus simplex (A. Milne-Edwards, 1873), female (9.7 × 6.8 mm) (S7, Panglao Is., NMCR-27356); F, Paraxanthodes obtusidens (Sakai, 1965), male (18.6 × 13.0 mm) (CP2747, ZRC 2008.1410).