Chlorodiella corallicola Miyake and Takeda, 1968

Shaga, I Bevin, Priya, K, Ramar, Selvakumar, Srinidhi, S, Mohan, G Chandra, Ranganathan, Sukanya, Moulvi, S M M & Mani, Bhuvaneswari, 2023, A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging, Bulletin of the National Museum of Nature and Science. Series A, Zoology 49 (1), pp. 7-42 : 24

Chlorodiella corallicola Miyake and Takeda, 1968 ( Figs. 9E , 10D–E )

Chlorodiella corallicola Miyake and Takeda, 1968 , pp. 389, 393 (in key), figs. 1–2.─ Garth and Kim, 1983, p. 687.─ Serène, 1984, pp. 255 (in key), 257 (in key).─ Garth, 1989, pp. 482 (in table 2), 483 (in table 3), 485 (in list).─ Hoc and Du, 2007, pp. 89 (in table 2), 90 (in tables 3, 4), 94 (in appendix).─ Lai et al., 2011, pp. 411 (in table), 440.─ Maenosono, 2022, p. 6, fig. 1D–F.

Material examined. Off Kwannon , Koror I., Palau Is. dredged; 1 ovig.♀ (cb 4.8×cl 3.2 mm), NSMT-Cr 30980, 1 juv., 1 ovig.♀ (10.3×7.0 mm), 1 ♀(8.9× 6.1 mm), NSMT-Cr 30981; June 17, 1980; K. Baba leg.

Remarks. This species is generally close to Chlorodiella laevissima ( Dana, 1852) , but as mentioned in the original description and by Maenosono (2022), it is readily distinguished from C. laevissima by having only four anterolateral teeth of the carapace including the external orbital tooth. The external orbital tooth may be united with the real first tooth that is seemingly the second tooth in the other species except for C. barbata ( Borradaile, 1900) and C. quadrilobata Dai, Cai and Yang, 1996 . These two species are characterized each by a tuft of soft hairs at the bases of the fingers and the lobate anterolateral carapace teeth, respectively. The G1 of this species was represented in the original description by Miyake and Takeda (1968), being truncated at the tip surrounded by some short setaceous tubercles as cited in this paper ( Fig. 10E ).

Distribution. This species was originally described on the specimens from Ngarsmau, Babldáob Island, Palau Islands, 26 m in depth, and then recorded from the Ryukyu Islands, the Philippines, Viet Nam, the Caroline Islands, the Marshall Islands, and the Great Barrier Reef, Australia.

Figures

Fig. 9. A: Gaillardiellus rueppellii (Krauss), ♂ (NSMT-Cr 30985; cb 8.8×cl 6.6mm). B: Metaxanthops acutus Serène, ♂ (NSMT-Cr 30987; cb 6.8×cl 5.5mm). C: Lophoplax sextuberculata Takeda and Kurata, ovig.♀ (NSMT-Cr 30992; cb 5.2×cl 4.0mm). D: Vellumnus pygmaeus (Takeda), ♂ (NSMT-Cr 30994; cb 5.7×cl 4.5mm). E: Chlorodiella corallicola Miyake and Takeda, ovig.♀ (NSMT-Cr 30980; cb 4.8×cl 3.2mm). F: Chlorodiella xishaensis Chen and Lan, ♂ (NSMT-Cr 30983; cb 8.0×cl 5.7mm).

Fig. 10. A: Trierarchus squamosus (Stephenson and Hudson, 1957), ♂ (NSMT-Cr 30977; cb 12.6×cl 8.7mm). Front-orbital region in dorsal view. B–C: Chlorodiella xishaensis Chen and Lan, ♂ (NSMT-Cr 30983; cb 8.0×cl 5.7mm). Left G1 in ventral view (B) and right third ambulatory leg in dorsal view (C). D–F: Chlorodiella corallicola Miyake and Takeda, ♂ (holotype, ZLKU 1724; cb 6.6×cl 4.4mm). Distal part of right G1 in ventral (D) and sternal (E) views (original figures by Miyake and Takeda, 1968). Scales for A=5mm, B= 0.5mm, C=3 mm, F=0.5 mm.