Carupa ohashii Takeda, 1993

Huang, Yu-Hsuan & Shih, Hsi-Te, 2021, Chthonius rhodochelatus Hadzi 1933, Zoological Studies 60 (60), pp. 1-45 : 7-11

publication ID	https://doi.org/ 10.6620/ZS.2021.60-60
persistent identifier	https://treatment.plazi.org/id/039587A2-FFB6-4A6F-36D6-FED1F1C25614
treatment provided by	Felipe
scientific name	Carupa ohashii Takeda, 1993
status

Treatment

Carupa ohashii Takeda, 1993 View in CoL ( Figs. 3A View Fig , 5)

Carupa ohashii Takeda, 1993: 145 View in CoL , figs. 1–3 (type locality: Shimoji

Carupinae View in CoL Lupocyclinae View in CoL Necronectinae

Podophthalminae Portuninae Thalamitinae

I., Japan; Japan: Ryukyus); Ng et al. 2008: 148 (list); Orchard 2012: 276, 1 unnumb. fig. (upper middle) (Christmas I.); Tan et al. 2014: 411 (Christmas I.); Sasaki 2019: 8893 (list).

Carupa cf. ohashii View in CoL – Shih et al. 2020b: 36 (Dongsha I.).

Material examined: Taiwan: 1 female (34.9 × 2 3.1 m m) (N C H U Z O O L 1 6 5 0 0), D o n g s h a I. (20°42'26.3"N 116°43'16.3"E), coll. YH Huang and CY Chi, 2 Nov. 2019.

Comparative material: Carupa tenuipes : 1 female (17.0 × 11.0 mm) (NCHUZOOL 16463), Daguang, Kenting, Pingtung, Taiwan (21°56'01"N 120°44'48"E), coll. JH Lee, 13 Apr. 2012.

Diagnosis: Carapace subhexagonal, surface smooth, 1.5 times broader than long. All carapace ridges absent, except epibranchial regions with a pair of ridges. Front with 2 lobes, each lobe slightly concave in median ( Figs. 3A View Fig , 5A). Supraorbital margins with 2 notches, infraorbital margins with 3 teeth. Anterolateral margins with 7 teeth, tip of first 4 blunt, tip of last 3 sharp, tooth 5 largest ( Figs. 3A View Fig , 5A). Chelipeds with merus having 3 sharp spines on inner margin; carpus with spine each on inner and outer margins; palm smooth without ridge and spine ( Figs. 3A View Fig , 5B). Surface of P5 smooth, inner margin of merus with small spine on distal end ( Fig. 3A View Fig ).

Coloration: Carapace bright orange with symmetrical dark orange stripes ( Fig. 3A View Fig ).

Distribution: Philippines (Mactan I.); Taiwan (Dongsha I.; Fig. 1 View Fig : no. 17); Japan (Ryukyus); Christmas I. ( Sasaki 2019; this study).

10 mm

Fig. 5. Carupa ohashii Takeda, 1993 , female (34.9 × 23.1 mm) (NCHUZOOL 16500). A, carapace; B, palm of right cheliped (outer view).

Ecological notes: A specimen was collected from Dongsha I. ( Fig. 1 View Fig : no. 17) from corals on seagrass bed.

Remarks: The genus Carupa Dana, 1851 currently contains 2 species, Car. ohashii Takeda, 1993 (West Pacific and Christmas I.) and Car. tenuipes Dana, 1852 (Indo-West Pacific) ( Ng et al. 2008; Sasaki 2019). Our specimen agrees with the characters of Car. ohashii : (1) first 4 anterolateral teeth with blunt tips, last 3 sharp, tooth 5 largest in Car. ohashii (Fig. 5A; Takeda 1993: figs. 1, 3B, D) (vs. first 5 teeth small and blunt, last 2 sharp, tooth 6 largest in Car. tenuipes ; Dana 1852: pl. 17(4a); Yang et al. 2012: fig. 25a, h); (2) carapace subhexagonal, anterolateral tooth 7 protruding laterally in Car. ohashii (Fig. 5A; Takeda 1993: figs. 1, 3B, D) (vs. carapace subelliptical, tooth 7 slightly protruding laterally in Car. tenuipes ; Dana 1852: pl. 17(4a); Yang et al. 2012: fig. 25a, h); (3) chelipedal palm with surface smooth in Car. ohashii (Fig. 5B; Takeda 1993: figs. 1, 3A, C) (vs. chelipedal palm with 2 ridges and 1 spine on dorsal surface in Car. tenuipes ; Yang et al. 2012: fig. 25a, b, i). Takeda (1993) suggested the brown symmetrical bands and the pattern of spots on the carapace in Car. ohashii ( Fig. 3A View Fig ; Takeda 1993: figs. 1, 3A, B, D) could be used as reliable characters to separate from the uniformly reddish carapace in Car. tenuipes ( Sakai 1976: pl. 110(3); Takeda 1993).