Medaeops granulosus ( Haswell, 1882 )

Mendoza, Jose Christopher E. & Ng, Peter K. L., 2009, A new xanthid crab of the genus Medaeops Guinot, 1967, from Peninsular Malaysia, with a note on Leptodius granulosus Haswell, 1882 (Crustacea: Decapoda: Brachyura: Xanthidae), Zootaxa 2297, pp. 44-54 : 51

publication ID	https://doi.org/10.5281/zenodo.191629
DOI	https://doi.org/10.5281/zenodo.6215189
persistent identifier	https://treatment.plazi.org/id/03DB2709-FFAD-E165-FF48-FB83B834FF1B
treatment provided by	Plazi (2016-04-20 05:31:30, last updated 2024-11-28 08:30:05)
scientific name	Medaeops granulosus ( Haswell, 1882 )
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Medaeops granulosus ( Haswell, 1882) View in CoL

( Figs. 2A–C View FIGURE 2. A – C , 3 View FIGURE 3. A, B C, D, 5A, B, 6)

Leptodius granulosus Haswell, 1882: 61 View in CoL .

Xantho macgillivrayi Miers, 1884: 211 View in CoL , pl. 20, fig. C.

Lophozozymus (Lophoxanthus) bellus var. leucomanus — Miers, 1886: 115, pl. 11, fig. 1. [not Xanthodes leucomanus Lockington, 1877 ].

Lophopanopeus japonicus Rathbun, 1898: 272 .

Lophoxanthus erosus Parisi, 1916: 181 , fig. 4.— Menzies, 1948: 21, pl. 4, fig. 33.

Medaeus granulosus View in CoL — Odhner, 1925: 61.— Gordon, 1931: 543, figs. 19, 22A.— Sakai, 1936: 152, fig. 74, pl. 46, fig. 1; 1939: 459, pl. 59, fig. 1, pl. 90, fig. 5; 1965: 135, pl. 69, fig. 2.— Buitendijk, 1950: 75.

Medaeops granulosus View in CoL — Guinot 1967: 366, fig. 40.— Serène & Umali 1972: 65, figs. 58, 59, pl. 7, figs. 1, 2.— Serène & Vadon 1981: 122. —Ho et al., 2004: 657, fig. 5h.—Ng et al., 2008: 199 (list).— Davie, 2002: 536.

Remarks. Haswell (1882) described a new species, Leptodius granulosus , from material collected in Port Denison, eastern Australia. This species was subsequently selected by Guinot (1967) to be the type species of Medaeops . Guinot (1967) also recognised Xantho macgillivrayi Miers, 1884 , Lophopanopeus japonicus Rathbun, 1898 , and Lophoxanthus erosus Parisi, 1916 , as subjective junior synonyms of the species. We examined, photographs of type material of Leptodius granulosus deposited at the Australian Museum in Sydney (see Comparative Material). Of the three lots which were found, only one (AM P40834) is clearly syntypic material (see Davie, 2002) based on their accompanying labels ( Fig. 6 View FIGURE 6 ), whereas the remaining lots (AM G5573 and AM P194), despite having been collected from the type locality (Port Denison), have doubtful type status as the accompanying labels merely state that they are “apparently the types ” or “possible syntypes ”. As a further complication, the syntypic lot (AM P40834) consists of two specimens, male and female, which are clearly not conspecific. The female specimen is clearly referable to Medaeops granulosus sensu stricto, whereas the male is actually Medaeops edwardsi Guinot, 1967 , previously known only from the western Indian Ocean. In order to stabilize the taxonomy of Leptodius granulosus Haswell, 1882 , we hereby designate the female syntype (AM P40834) as the lectotype. The remaining two lots, AM G5573 (2 males) and AM P194 (2 females) remain possible syntypes until such a time when more information is available.

References

Buitendijk, A. M. (1950) On a small collection of Decapoda Brachyura, chiefly Dromiidae and Oxyrhyncha, from the neighborhood of Singapore. Bulletin of the Raffles Museum, Singapore, 21, 59 - 82.

Davie, P. J. F. (2002) Crustacea: Malacostraca: Eucarida (Part 2): Decapoda - Anomura, Brachyura. In: A. Wells & W. W. K. Houston (eds.) Zoological Catalogue of Australia, Vol. 19.3 B. Melbourne: CSIRO Publishing, Australia. xiv, 641 p.

Gordon, I. (1931) Brachyura from the coasts of China. Journal of the Linnaean Society of London, Zoology, 37 (254), 525 - 558.

Guinot, D. (1967) Recherches preliminaires sur les groupements naturels chez les Crustaces Decapodes Brachyoures. II. Les anciens genres Micropanope Stimpson et Medaeus Dana. Bulletin du Museum national d'Histoire naurelle (Paris), (2) 39 (2), 345 - 374.

Haswell, W. A. (1882) Catalogue of the Australian stalk- and sessile-eyed Crustacea. Sydney, The Australian Museum, iii - xxiv, 1 - 324, figs. 1 - 8, pls. 1 - 4.

Menzies, R. J. (1948) A revision of the brachyuran genus Lophopanopeus. Allan Hancock Foundation Publications Occasional Paper, 4, 1 - 45.

Miers, E. J. (1884) Crustacea. In: Report on the zoological collections made in the Indo-Pacific Ocean during the voyage of H. M. S. Alert 1881 - 1882. London. 178 - 322, pls. 18 - 34.

Miers, E. J. (1886) Part II. Report of the Brachyura collected by H. M. S. Challenger during the years 1873 - 76. In: Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 1876 under the command of Captain George S. Nares, N. R., F. R. S. and the late Captain Frank Tourle Thomson, R. N. prepared under the Superintendence of the late Sir C. Wyville Thomson, Knt., F. R. S. & Regis Professor of Natural History in the University of Edinburgh of the civilian scientific staff on board and now of John Murray one of the naturalists of the expedition. Zoology, Published by Order of Her Majesty's Government. London, Edinburgh and Dublin, HMSO. 17, i - l, 1 - 362, pls. 1 - 29.

Odhner, T. (1925) Monographierte Gattungen der Krabbenfamilie Xanthidae. I. Goteborgs Kungl. Vetenskaps-och- Vitterhets-Samhalles Handlingar, 29 (1), 1 - 92, pls. 1 - 5.

Parisi, B. (1916) I Decapodi giapponesi del Museo di Milano. IV. Cyclometopa. Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale in Milano, 55 (2 - 3), 153 - 190, pls. 7 - 11.

Rathbun, M. J. (1898) The Brachyura of the biological expedition to the Florida Keys and the Bahamas in 1893. Bulletin of the Laboratories of Natural History of the State University of Iowa, 4 (3), 250 - 294.

Sakai, T. (1936) Crabs of Japan. Tokyo, Sanseido Co., Ltd. i - viii, 1 - 239, pls. 1 - 66.

Serene, R. & A. F. Umali (1972) The family Raninidae and other new and rare species of brachyuran decapods from the Philippines and adjacent regions. Philippine Journal of Science, 99 (1 - 2), 21 - 105, pls. 1 - 9

Serene, R. & C. Vadon (1981) Crustaces Decapodes: Brachyoures. Liste preliminaire, description de formes nouvelles et remarques taxonomiques. Resultats des Campagnes MUSORSTOM, I - Philippines (18 - 28 mars 1976), Tome 1. Collection Memoires ORSTOM, 91, 117 - 140, pls. 1 - 4.

Figures

FIGURE 6. Leptodius granulosus Haswell, 1882, lectotype female (dry), 15.7 by 10.8 mm (AM P 40834), Port Denison, Queensland, Australia.

FIGURE 2. A – C, Medaeops granulosus (Haswell, 1882), male, 20.7 x 14.6 mm (ZRC 1965.11.10.46 - 50), Lindeman Island, Queensland, Australia; D, E, Medaeops neglectus (Balss, 1922), male, 17.2 x 11.5 mm (MNHN-B 6534), Shimoni, Kenya. A, D, full dorsal view; B, E, anterior view; C, F, ventral view.

FIGURE 3. A, B, Medaeops potens new species, male holotype (ZRC 2009.0811); C, D, Medaeops granulosus (Haswell, 1882), male (ZRC 1965.11.10.46 - 50), Lindeman Island, Queensland, Australia; E, F, Medaeops neglectus (Balss, 1922) male (MNHN-B 6534), Shimoni, Kenya. A – C, major chela, external view; D – F, ambulatory legs (P 4, P 5), dorsal view.