Neparilia tuberculata ( Sakai, 1961 )

Ng, Peter K. L., Devi, Suvarna & Kumar, Appukuttannair Biju, 2018, The genus Parilia Wood-Mason, in Wood-Mason & Alcock, 1891, with description of a new species and establishment of a new genus for P. tuberculata Sakai, 1961 (Crustacea, Brachyura, Leucosiidae), Raffles Bulletin of Zoology 66, pp. 300-319 : 317-318

Neparilia tuberculata ( Sakai, 1961)

( Figs. 10–13 )

Parilia tuberculata Sakai, 1961: 137 , pl. 3 fig. 6; Sakai, 1976: 106, text fig. 58, pl. 30 fig. 3; Ikeda, 1998: 85; Ng et al., 2008: 92.

Material examined. 1 male (37.0 × 34.4 mm) ( ZRC 2017.1052 ), Balut Island , Mindanao, 150 m, Philippines, coll. tangle net, local fishermen, from dealers, 2017 .

Comparative material. Urashima pustuloides ( Sakai, 1961) : 2 males (44.5 × 37.6 mm, 44.6 × 40.8 mm), 2 females (32.0 × 27.0 mm, 46.2 × 39.3 mm) ( ZRC 2017.1069 ), Balicasag Island , Panglao, Bohol, Philippines, from tangle nets, coll. P.K.L. Ng, November 2004 .

Diagnosis. As for genus.

Remarks. Sakai (1961) described the species from two males in Tosa Bay, Japan, but it is not known where the types are now kept. They are not in the National Museum of Nature and Science, Tsukuba (formerly National Science Museum, Tokyo). Ng et al. (2017) discussed the matter of Sakai’s material at length, with extant material in the Smithsonian Institution, Naturmuseum Senckenberg, Kanagawa Museum or lost.

Fortunately, the male specimen on hand agrees in all aspects with the description and figures in Sakai (1961, 1976) and we have no doubt of its identity. During a research cruise (LUMIWAN 2008) to southwestern Philippines in 2008 jointly organised by the Bureau of Fisheries and Aquatic Resources of the Philippines, Philippine National Museum, Musèum national d’Histoire Naturelle (Paris), Lee Kong Chian Natural History Museum, and National Taiwan Ocean University, a male specimen of Neparilia tuberculata was obtained and photographed fresh ( Fig. 13 ). It agrees with the male specimen on hand in all key aspects although its G1 was not photographed. Unfortunately, the specimens from this cruise are not available for study for the time being and we are unable to add this to our material examined. The colour of the fresh specimen, however, is striking, being a bright orange on all the dorsal surfaces with the ventral regions white. This agrees well with the Japanese female figured in Ikeda (1998: 85).

Distribution. Neparilia tuberculata is known only from Japan ( Sakai, 1961, 1976; Ikeda, 1998; Marumura & Kosaka, 2003) and the Philippines (present record).

Figures

Fig. 10. Neparilia tuberculata (Sakai, 1961), male (37.0 × 34.4 mm) (ZRC 2017.1052), Philippines. A, overall view; B, dorsal view of carapace; C, right third maxilliped.

Fig. 11. Neparilia tuberculata (Sakai, 1961), male (37.0 × 34.4 mm) (ZRC 2017.1052), Philippines. A, B, frontal view of cephalothorax and third maxillipeds; C, D, thoracic sternum and pleon; E, pleon; F, pleonal somite 6 showing cup-like tubercles on distal and proximal surfaces; G, outer view of right chela.

Fig. 12. Neparilia tuberculata (Sakai, 1961), male (37.0 × 34.4 mm) (ZRC 2017.1052), Philippines. A, left G1 (ventral view); B, distal part of left G1 (ventral view); C, distal part of left G1 (dorsal view); D, left G2. Scales: A, D = 1.0 mm; B, C = 0.5 mm.

Fig. 13. Freshly collected male (not available for examination) from southern Philippines by LUMIWAN 2008 cruise. A, overall view; B, C, frontal view of cephalothorax D, ventral view showing third maxillipeds and anterior thoracic sternum. Photographs by T.-Y. Chan.