Lupocyclinae Paulson, 1875

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

publication ID

https://doi.org/ 10.6620/ZS.2021.60-60

persistent identifier

https://treatment.plazi.org/id/039587A2-FFBA-4A6F-35FA-FBB0F6235754

treatment provided by

Felipe

scientific name

Lupocyclinae Paulson, 1875
status

 

Subfamily Lupocyclinae Paulson, 1875 View in CoL Genus Lupocycloporus Alcock, 1899 Lupocycloporus minutus ( Shen, 1937) ( Figs. 3B View Fig , 6 View Fig )

Neptunus (Lupocycloporus) minutus Shen, 1937: 115 View in CoL , fig. 10a–b (type locality: Siglap, Singapore).

Portunus minutus View in CoL – Stephenson 1967: 16, pl. 2 (Indo-West Pacific); Stephenson 1975: 179 (Timor; Sumatra: Aceh); Cariaso and Garcia 1986: 213, fig. 26 ( Philippines).

Portunus (Lupocycloporus) minutus View in CoL – Serène 1968: 67 (list); Ng et al. 2008: 151 (list).

Lupocycloporus minutus View in CoL – Sasaki 2019: 9038 (list).

Material examined: Taiwan: 3 males (17.0–17.6 × 9.7–10.1 mm) (NCHUZOOL 16534), Zuoying, Kaohsiung, Jun. 2001; 1 female (17.9 × 10.4 mm), 1 ovig. female (18.9 × 10.6 mm) (NCHUZOOL 16565), Dalinpu, Siaogang, Kaohsiung, Jun. 2001.

Diagnosis: Carapace transversely hexagonal, 1.7 times broader than long. Frontal ridge absent; protogastric, mesogastric, metagastric, cardiac regions each with a pair of faintly granulated ridges; epibranchial regions with a pair of granulated ridges; mesobranchial regions with 2 pairs of granulated ridges ( Fig. 6A View Fig ). Front granulated with 4 shallow lobes, lateral 2 broader than median. Supraorbital margins with 2 notches ( Fig. 6A View Fig ). Anterolateral margins with 9 teeth, each tooth with posterior margin granulated, teeth 2–4 small and blunt, teeth 5–9 gradually increasing in size, tooth 9 largest ( Fig. 6A View Fig ). Chelipeds elongated with surface granulated, merus with 4 spines on inner margin, 2 spines on outer margin; carpus with 2 spines; palm slender with 3–4 spines on dorsal surface, outer surface with 3 granulated ridges, inner surface with 1 granulated ridge. P5 with merus having spine on inner margin; propodus with inner margin smooth. Male pleon with pleomere 6 trapezoidal; telson longer than broad. G1 smooth, distal half slender, bent laterally ( Fig. 6B, C View Fig ).

Distribution: East Timor; Philippines; Taiwan; Japan (Ryukyus); Singapore (Siglap); Thailand (eastern side); India (Andaman and Nicobar Is.) ( Sasaki 2019; this study).

Ecological notes: Specimens were collected by trawling at about 30 meters deep.

Remarks: Lupocycloporus minutus ( Shen, 1937) is similar to Luo. innominatus (Rathbun, 1909), but both were described too briefly to distinguish them ( Spiridonov 1999). Spiridonov (1999) found the specimens from Ambon agreed with the characters of “? Neptunus (Lupocycloporus) gracilimanus ” from Andamans (= Luo. innominatus (Rathbun, 1909)) in Alcock (1899: 45), with more prominent median front lobes and without protogastric ridges, differed from Luo. minutus , but it is also necessary to re-examine the type specimens of Luo. minutus . Our specimens agree with the characters of Luo. minutus in the shallow front lobes ( Fig. 6A View Fig ; Shen 1937: fig. 10a) and the G1 morphology ( Fig. 6B, C View Fig ; Cariaso and Garcia 1986: fig. 26c, d). This identification is also consistent with its distribution, because the type locality of Luo. minutus is Singapore ( Shen 1937), which is closer to Taiwan, compared with Andamans of Luo. innominatus ( Alcock 1899).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Portunidae

Loc

Lupocyclinae Paulson, 1875

Huang, Yu-Hsuan & Shih, Hsi-Te 2021
2021
Loc

Lupocycloporus minutus

Sasaki J. 2019: 9038
2019
Loc

Portunus minutus

Cariaso BL & Garcia RG 1986: 213
Stephenson W. 1975: 179
1975
Loc

Portunus (Lupocycloporus) minutus

Ng PKL & Guinot D & Davie PJF 2008: 151
Serene R. 1968: 67
1968
Loc

Neptunus (Lupocycloporus) minutus

Shen CJ 1937: 115
1937
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