Fig 4 - uploaded by Shane Ahyong
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Ethusina chenae Ng and Ho. A-B: Female (NSMT-Cr 29255: CB 9.3 mmCL 10.9 mm) from sta. 26 (Timor Sea, 610-690 m depth). C: Juvenile (NSMT-Cr 29256: CB 4.0 mmCL 4.2 mm) from sta. 26 (Timor Sea; 610-690 m depth).
Source publication
The present study is the second part of a series of reports on the crabs collected by the
KH-72-1 cruise of the RV Hakuhō Maru from the seas of East and Southeast Asia. In this report, 16 species of 14 genera in 10 families of the crabs collected in the depths of the Timor Sea, 295–690 m, are recorded. There were no species common to the Sulu Sea...
Contexts in source publication
Context 1
... with the proportional length of the pereopod 3 merus of females typically about 10% less than that of males (Ahyong et al., 2020). The male telson and pleonal somite 6 of C. andamanicus is immovably fused, with an indistinct demarcation (Ahyong et al., 2020, fig. 2C), but fully demarcated, and slightly movable in C. java (Ahyong et al., 2020, fig. 4H). In the female at hand, somite 6 and the telson are immovably fused, but a distinct, complete suture is present as in male C. java. Additionally, the finely granular carapace and pereopodal granulation resembles those of C. java, rather than the coarser ornamentation of C. andamanicus (see Ahyong et al., 2020). Thus, we herein refer ...
Context 2
... detailed comparison with the literature, the female at hand (Fig. 4A-B), which is fully mature, was identified with E. chenae. Among the species mentioned above, E. chenae is characteristic in that 1) the carapace shape is not constricted behind the external orbital spine that is directed nearly forward or only slightly outward, with the tip reaching nearly to the tip of the median frontal tooth, 2) each ...
Context 3
... and robust preorbital lobe (blunt and small in S. sibogae), the postorbital lobe distinctly broadened anteriorly and continuous dorsally with the narrowed hepatic lobe (Fig. 6E) (weakly broadened anteriorly and continuous dorsally with rounded hepatic lobe in S. sibogae) (see also Griffin and Tranter, 1986b, figs. 12-13;Takeda and Moosa, 1990, fig. ...
Citations
... This is the fourth part of the taxonomic studies on the crabs collected by the RV Hakuhō Maru (KH-72-1 cruise) in the seas of East and Southeast Asia. In the previous three parts (Takeda et al., 2021(Takeda et al., , 2022a published in the Bulletin of the National Museum of Nature and Science, Tokyo, 17 species in 14 genera and 9 families from the Sulu Sea and the Sibutu Passage in the Philippines, 16 species in 14 genera and 10 families from the Timor Sea, and 41 species in 28 genera and 10 families from the Sahul Shelf were recorded. In this fourth and final part of the series, 35 species in 31 genera and 13 families from the South China Sea are recorded. ...
... Measurements and abbreviations used in the descriptions and notes follow Takeda et al., 2021Takeda et al., , 2022a. The specimens are deposited at the Tsukuba Research Departments, National Museum of Nature and Science, Tokyo (NSMT). ...
... As Ng et al. (2018) mentioned, the record of P. major from the Gulf of Manaar, southeast India, by Vidhya et al. (2017) Remarks. Cyrtomaia suhmi is not uncommon in West Pacific waters, and in the present series of study, two specimens having a deformed carapace were already recorded from the depths of 610-690 m in the Timor Sea (Takeda et al. 2022a). Eleven specimens at hand have no distinct morphological abnormalities, and they are preserved with a number of detached ambulatory legs. ...
The crabs collected by the RV Hakuhō Maru (KH-72-1 cruise) in the South China Sea
are recorded as the fourth part following the previous three parts of the series (Sulu Sea and Sibutu Passage, Timor Sea, and Sahul Shelf). They are mostly shallow water inhabitants, representing 35 species of 31 genera in 13 families, with two new species of the family Epialtidae, Naxioides elongatus sp. nov. and Samadinia hakuhoae sp. nov. Taxonomic comments are given for each species. In this fourth and final part, biogeographic notes on all the species collected by RV Hakuhō Maru (KH-72-1 cruise) are briefly summarized, together with a list of the crabs collected by the RV Hakuhō Maru (KH-73-2 cruise) in the South China Sea.
... This is the third part of the taxonomic studies on the crabs collected by the RV Hakuhō Maru (KH-72-1 cruise) from the seas of East and Southeast Asia. In the first part (Takeda et al., 2021), 17 species of 14 genera in 9 families from the Sulu Sea and the Sibutu Passage, 285-2030 m in bathymetric range, and in the second part (Takeda et al., 2022), 16 species of 14 genera in 10 families, mainly from northern Timor Sea, 295-690 m depth, were recorded. In the first part, in addition to the typical deep-sea species commonly recorded, three new species, Cymono- Table 2. List of the species from the Sahul Shelf recorded in this part, each with bathymetric record in parenthesis next to the station number. ...
The crabs collected from the Sahul Shelf, in the Australian part of the Timor Sea by the RV Hakuhō Maru (KH-72-1 cruise) are identified and recorded, with some taxonomic comments. They are referred to 40 species of 29 genera in 10 families, including 2 new majoid species, Naxioides sahulensis sp. nov. (Epialtidae) and Prismatopus peterngi sp. nov. (Majidae). The following 10 species in 7 families, Cryptodromia amboinensis De Man, 1888 (Dromiidae), Mclaydromia colini Guinot and Tavares, 2003 (Dromiidae), Ethusa hirsuta McArdle, 1900 (Ethusidae), Drachiella morum (Alcock, 1896) (Aethridae), Hyastenus kyusyuensis (Yokoya, 1933) (Epialtidae), Pseudolambrus bidentatus (Flipse, 1930) (Parthenopidae), Charybdis (Charybdis) rosaea (Hombron and Jacquinot, 1846) (Portunidae), Latopilumnus tuberculosus (Garth and Kim, 1984) (Pilumnidae), Pilumnus rotundus Borradaile, 1902 (Pilumnidae) and Viaderiana typica Ward, 1942 (Pilumnidae), are recorded for the first time from Australia. Most of the species reported are shallow-water inhabitants obtained from station 29 (49–52 m depth), and it is remarkable that majoid and pilumnid crabs are dominant (11 species in the families Inachidae, Epialtidae and Majidae, and 14 species in the family Pilumnidae), with no representative of the family Xanthidae. Otherwise, the generic position of an unusual megalopa of the family Homolidae found in the trawl catch at station 33 (535–547 m depth) is discussed.
