Yaldwynopsis hawaiiana Ng & Eldredge, 2012

Ng, Peter K. L., Forges, Bertrand Richer De & Martin, Joel W., 2020, The Homolidae of the Hawaiian Islands, with notes on the taxonomy of Moloha major (Kubo, 1936) (Crustacea: Decapoda: Brachyura), Zootaxa 4809 (2), pp. 306-328 : 316-319

publication ID	https://doi.org/10.11646/zootaxa.4809.2.4
publication LSID	lsid:zoobank.org:pub:7DD95C27-8BEF-467A-B24F-B43C7665B1A9
persistent identifier	https://treatment.plazi.org/id/BF5DB417-DA51-FFB9-FF38-F8A920EEDEA0
treatment provided by	Plazi (2020-07-07 12:49:03, last updated 2023-10-31 19:01:20)
scientific name	Yaldwynopsis hawaiiana Ng & Eldredge, 2012
status

Treatment

Yaldwynopsis hawaiiana Ng & Eldredge, 2012 View in CoL

( Fig. 2 View FIGURE 2 C–E)

Homala japonica — Clarke 1972: 16 (not Homola japonica Parisi, 1915 ).

Paromola spinimana — Titgen 1988: 144.

Yaldwynopsis spinimanus View in CoL — Guinot & Richer de Forges 1995: 439; Castro 2011: 36; Garassino 2009: 4, 39 (not Paromola spinimana Griffin, 1965 )

Yaldwynopsis hawaiiana Ng & Eldredge, 2012: 30 View in CoL , figs. 1A, 2, 3, 5A, B, 6A–F.

Material examined. Hawaiian Islands: Holotype female (45.3 × 40.8 mm) ( BPBM S7866 About BPBM ), collection number 69-10-12, Barbers Point, off Kane‘ohe, O‘ahu, in shrimp trap, 293 m, coll. T. Clarke, 9–10 November 1970. Others: 1 female (51.0 × 46.4 mm) (LACM-MBC-5664), reef slope, FFS-0166, DRS-13, BAIT-2, carrying gorgonian, 23.712°N 166.352°W– 23.712°N 166.351°W, NWI, French Frigate Shoals, NWI, 255– 236 m, baited trap, coll. J. Martin, K. Coontz, E. Soto & T. Lotufo, 23 October 2006 (photograph voucher JM0211 ). GoogleMaps

Remarks. Long regarded as monotypic, Richer de Forges & Ng (2007) revised Yaldwynopsis , restricting the type species to New Zealand and referring specimens from Japan, Philippines, Taiwan, and French Polynesia to two new species, Y. saguili and Y. guinotae , respectively (see Guinot & Richer de Forges 1995). An apparently undescribed species of Yaldwynopsis was reported by Poore et al. (2008: 38) from the continental waters of Australia, 205– 210 m. Yaldwynopsis hawaiiana was described from one poorly preserved female from O‘ahu by Ng & Eldredge (2012). The present specimen agrees well with the diagnostic characters described by Ng & Eldredge (2012), notably in the presence of two distinct spines on the P5 merus.

The single animal collected at French Frigate Shoals was carrying a small specimen of gorgonian in its fifth pereopod; the crab is unfortunately missing three pereopods. The life colours of Y. hawaiiana are figured here for the first time ( Fig. 2 View FIGURE 2 C–E) and in general, it agrees with that of Y. saguili (see Richer de Forges & Ng 2007: fig. 8A).

Distribution. Western Pacific Ocean, New Zealand, French Polynesia, Hawaiian Islands, 15-183 m; one record as subtidal being very doubtful (see Castro 2011)

References

Castro, P. (2011) Catalog of the anomuran and brachyuran crabs (Crustacea: Decapoda: Anomura, Brachyura) of the Hawaiian Islands. Zootaxa, 2947, 1 - 154.

Clarke, T. A. (1972) Exploration for deep benthic fish and crustacean resources in Hawaii. Hawaii Institute of Marine Biology, Technical Report, 29, 1 - 18.

Garassino, A. (2009) The thoracic sternum and spermatheca in the extant genera of the family Homolidae De Haan, 1839 (Crustacea, Decapoda, Brachyura). Memorie della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 36 (3), 1 - 80.

Griffin, D. J. G. (1965) A new species of Paromola (Crustacea, Decapoda, Thelxiopidae) from New Zealand. Transactions of the Royal Society of New Zealand, 7, 85 - 91.

Guinot, D. & Richer de Forges, B. (1995) Crustacea Decapoda Brachyura: Revision de la famille des Homolidae de Haan, 1839. In: Crosnier, A. (Ed.), Resultats des campagnes MUSORSTOM, Volume 13. Memoires du Museum national d'Histoire naturelle. Vol. 163. Paris: Editions du Museum. Pp. 283 - 517, figs. 1 - 76.

Ng, P. K. L. & L. G. Eldredge, L. G. (2012) A new species of Yaldwynopsis from O'ahu, Hawai'i (Crustacea: Decapoda: Brachyura: Homolidae). Records of the Hawaii Biological Survey for 2011. Evenhuis, N. L. Evenhuis & L. G. Eldredge (editors). Bishop Museum Occasional Papers, 112, 29 - 38.

Parisi, B. (1915) I Decapodi giapponesi del Museo di Milano. II. Dromiacea. Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale, Milano, 54: 102 - 116, figs. 1, 2, pls. 2, 3.

Poore, G. C. B., McCallum, A. W. & Taylor, J. (2008) Decapod Crustacea of the continental margin of southwestern and central Western Australia: preliminary identifications of 524 species from FRV Southern Surveyor voyage SS 10 - 2005. Museum Victoria Science Report, 11, 1 - 106.

Richer de Forges, B. & Ng, P. K. L. (2007) New records and new species of Homolidae De Haan, 1839, from the Philippines and French Polynesia (Crustacea: Decapoda: Brachyura). Raffles Bulletin of Zoology, Supplement 16, 29 - 45.

Titgen, R. H. (1988) New decapod records from the Hawaiian Islands (Crustacea, Decapoda). Pacific Science, 41 (1 - 4), 141 - 147.

Figures

FIGURE 2. Colour in life. A, Moloha major, male (78.1 × 71.6 mm), JM0095 (LACM-MBC-5564); B, M. major, male (60.3 × 52.4 mm), JM0043 (ZRC 2019.1109). C–E, Yaldwynopsis hawaiiana, female (51.0 × 46.4 mm) carrying gorgonian, JM0211 (LACM-MBC-5664). A–C, overall dorsal view; D, left cheliped and front; E, outer view of left chela.All from Hawai’i.