Lupocyclus tugelae Barnard, 1950

Huang, Yu-Hsuan & Shih, Hsi-Te, 2021, Chthonius rhodochelatus Hadzi 1933, Zoological Studies 60 (60), pp. 1-45 : 14-16

publication ID	https://doi.org/10.6620/ZS.2021.60-60
persistent identifier	https://treatment.plazi.org/id/039587A2-FFBD-4A6A-35C3-F971F1C65377
treatment provided by	Felipe (2024-07-25 17:30:32, last updated 2024-07-25 18:24:44)
scientific name	Lupocyclus tugelae Barnard, 1950
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Lupocyclus tugelae Barnard, 1950 View in CoL ( Figs. 3D View Fig , 8 View Fig )

Lupocyclus rotundatus View in CoL – Sakai 1939: 382, pl. 80(5) ( Japan: Shimada and Nagasaki). (not Lupocyclus rotundatus Adams & White, 1849 View in CoL )

Lupocyclus tugelae Barnard, 1950: 148 View in CoL , figs. 29e–h (type locality: Tugela River mouth, South Africa); Sakai 1976: 352, pl. 121(2) ( Japan: Sagami Bay, Shimada, Tosa Bay and Nagasaki); Dai and Xu 1991: 18, fig. 14 (Nansha Is.); ZG Huang 1994: 585 (list; Taiwan Strait; Nansha Is.); Ng et al. 2008: 151 (list); Yang et al. 2012: 117, fig. 43, pl. 8(6) ( China; Nansha Is.); Sasaki 2019: 8923 (list).

Material examined: Taiwan: 1 male (17.5 × 13.1 mm), 1 ovig. female (15.8 × 12.1 mm) (NCHUZOOL 16560), Erzihliao Fishing Port, Kaohsiung, coll. YH Huang, 4 Apr. 2019; 1 female (14.1 × 10.7 mm) (NCHUZOOL 16593), Erzihliao Fishing Port, Kaohsiung, coll. YH Huang, 9 Feb. 2019.

Diagnosis: Carapace subhexagonal, slightly broader than long, surface with granular patches and pilose. Frontal, metagastric and cardiac ridges absent; protogastric and mesogastric regions each with a pair of faintly granulated ridges; epibranchial regions with a pair of granulated ridges; mesobranchial regions with 2 pairs of faintly granulated ridges. Front protruding with 4 teeth, median 2 teeth more protruding than lateral ( Fig. 8A View Fig ). Orbit slightly as broad as front; supraorbital margins with 2 notches ( Fig. 8A View Fig ). Anterolateral margins with 9 teeth, surface granulated, teeth 2, 4, 6, 8 smaller than others, tooth 1 largest ( Fig. 8A View Fig ). Chelipeds slender with surface densely pilose; merus with surface squamous, 5 spines on inner margin, 2 on outer margin; carpus with 4 granulated ridges on dorsal surface, 1 spine each on inner and outer margins; palm with 2 granulated ridges and 3 spines on dorsal surface, 3 ridges on outer surface, 1 ridge on inner surface, ventral surface squamous. P5 with merus having a spine on inner margin; propodus slender, longer than broad. Male pleon with pleomere 6 trapezoidal, telson longer than broad. G1 with distal part curved laterally, tip slender with spines on mesial side ( Fig. 8B–E View Fig ).

Distribution: New Caledonia; Australia (western); Indonesia ( Ambon; Talaud Archipelago; Makassar); Philippines; Nansha Is.; Taiwan (Erzihliao Fishing Port, Kaohsiung; Fig. 1 View Fig : no. 7); Japan (Sagami Bay; Tosa Bay; Nagasaki); China (incl. Hainan I.); Red Sea; Kenya; Madagascar; South Africa (Tugela River mouth) ( Sasaki 2019; this study).

Ecological notes: The habitats are composed of mud, muddy-sand or broken shells at 14–174 meters deep ( Yang et al. 2012).

Remarks: Lupocyclus tugelae Barnard, 1950 can be distinguished from Luu. inaequalis by the following characters: (1) carapace with granular patches in Luu. tugelae ( Fig. 8A View Fig ) (vs. granulated ridges on mesogastric, metagastric, cardiac and mesobranchial regions in Luu. inaequalis ; Fig. 7A View Fig ); (2) G1 curved laterally at 1/3 from tip, tip with spines on mesial side in Luu. tugelae ( Fig. 8B–E View Fig ; Yang et al. 2012: fig. 43g) (vs. G1 curved at 1/2, tip with spines on dorsal side in Luu. inaequalis ; Fig. 7B–E View Fig ; Yang et al. 2012: fig. 39e). ZG Huang (1994) has included Luu. tugelae from the Taiwan Strait, however

5 mm

Ng et al. (2017) excluded this record from Taiwan, because of the unclear locations. As a result, this is the first confirmed record of Luu. tugelae from Taiwan.

References

Barnard KH. 1950. Descriptive catalogue of South African decapod Crustacea (crabs and shrimps). Ann South African Mus 38: 1 - 837.

Dai AY, Xu ZX. 1991. A preliminary study on the crabs of the Nansha Islands, China. In: Contributions on Marine Biological Research of the Nansha Islands and Neighbouring Waters, China Ocean Press 3: 1 - 47.

Huang ZG. 1994. Brachyura. In: Marine species and their distributions in China's Seas. Department of Ocean Management and Monitoring State Oceanic Administration. China Ocean Press, Beijing, pp. 576 - 600.

Ng PKL, Guinot D, Davie PJF. 2008. Systema Brachyurorum: Part 1. An annotated checklist of extant brachyuran crabs of the world. Raffles Bull Zool Suppl 17: 1 - 296.

Ng PKL, Shih HT, Ho PH, Wang CH. 2017. An updated annotated checklist of brachyuran crabs from Taiwan (Crustacea: Decapoda). J Nat Taiwan Mus 70: 1 - 208. doi: 10.6532 / JNTM. 201712 _ 70 (3; 4). 01.

Sakai T. 1939. Studies on the Crabs of Japan, IV. Brachygnatha, Brachyrhyncha. Yokendo, Tokyo, pp. 365 - 741 + 1 - 23 [= index], pls. 42 - 111.

Sakai T. 1976. Crabs of Japan and the Adjacent Seas. Kodansha Ltd., Tokyo, 733 pp., 251 pls.

Sasaki J. 2019. The species list of Decapoda, Euphausiacea, and Stomatopoda, all of the world, version 03 - 3.1. Local Independent Administrative Agency Hokkaido Research Organization, Resources Management and Enhancement Division, Abashiri Fisheries Research Institute, Fisheries Research Department, Hokkaido, Japan, 14644 pp. doi: 10.13140 / RG. 2.2.22353.89446.

Yang SL, Chen HL, Dai AY. 2012. Fauna Sinica. Invertebrata: Crustacea: Decapoda: Portunidae. Science Press, Beijing, China, 8 + 417 pp, 14 pls. (in Chinese)

Figures

Fig. 3. Species of the family Portunidae. A, Carupa ohashii Takeda, 1993, female (34.9 × 23.1 mm) (NCHUZOOL 16500), Dongsha I.; B, Lupocycloporus minutus (Shen, 1937), male (17.5 × 9.7 mm) (NCHUZOOL 16534), Zuoying, Kaohsiung; C, Lupocyclus inaequalis (Walker, 1887), male (21.6 × 16.3 mm) (NCHUZOOL 16551), Erzihliao Fishing Port, Kaohsiung; D, Lupocyclus tugelae Barnard, 1950, male (17.5 × 13.1 mm) (NCHUZOOL 16560), Erzihliao Fishing Port, Kaohsiung; E, Podophthalmus minabensis Sakai, 1961, male (25.2 × 14.9 mm) (NCHUZOOL 16499), Dalinpu, Siaogang, Kaohsiung; F, Monomia gladiator (Fabricius, 1798), male (53.0 × 31.2 mm) (NCHUZOOL 16506), Erzihliao Fishing Port, Kaohsiung; G, Monomia lucida Koch & Ďuriš, 2018, male (54.8 × 30.7 mm) (NCHUZOOL 16538), Erzihliao Fishing Port, Kaohsiung; H, Xiphonectes tuberculosus (A. Milne-Edwards, 1861), males (24.3 × 14.3 mm) (NCHUZOOL 16530), Zuoying, Kaohsiung.

Fig. 8. Lupocyclus tugelae Barnard, 1950, male (17.5 × 13.1 mm) (NCHUZOOL 16560). A, carapace; B–E, right G1; B, C, dorsal view; D, E, ventral view.

Fig. 1. Taiwan main island and adjacent islets, with the collection localities shown in gray circles (see Table 1).

Fig. 7. Lupocyclus inaequalis (Walker, 1887), male (21.6 × 16.3 mm) (NCHUZOOL 16551). A, carapace; B–E, right G1; B, C, dorsal view; D, E, ventral view.