Lepidothelphusa sangon, Grinang & Ng, 2015
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publication ID |
https://doi.org/ 10.5281/zenodo.5386711 |
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publication LSID |
lsid:zoobank.org:pub:BAA493D3-8195-417B-ABD8-A36D3FD90533 |
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persistent identifier |
https://treatment.plazi.org/id/EEB8BD33-A7CB-4E22-A5E3-EC8AD1B542B5 |
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taxon LSID |
lsid:zoobank.org:act:EEB8BD33-A7CB-4E22-A5E3-EC8AD1B542B5 |
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treatment provided by |
Valdenar |
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scientific name |
Lepidothelphusa sangon |
| status |
sp. nov. |
Lepidothelphusa sangon View in CoL , new species
( Figs. 11A–I View Fig , 12A–E View Fig , 14E, F View Fig )
Material examined. Holotype: male (8.4 × 7.6 mm) ( ZRC 2015.0611 View Materials ), Nawang Waterfall , 187 m above sea level, Bung Bratak , Bau, Sarawak, coll. PKL Ng et al., 14 September 2013 . Paratypes: 14 males (largest 8.0 × 7.1 mm), 7 females, 2 ovigerous females (largest 7.4 × 6.0 mm), 1 juvenile ( ZRC 2015.0612 View Materials ), data same as holotype ; 4 males (largest 9.0 × 7.9 mm) (SBC.00431–34), location same as holotype, coll. J Grinang et al., 14 September 2013 ; 1 male (8.0 × 7.0 mm) (SBC.C.00476), location same as holotype, J Grinang, 1 May 2013 .
Diagnosis. Carapace quadrate, surface relatively flat, rugose, anterolateral margins smooth; antero- and posterolateral regions rugose; epibranchial tooth undiscernible; external orbital tooth with outer margin concave, smooth; serrated projection on frontal region distinct; epigastric and postorbital cristae distinct, margins serrated; cervical and H-grooves shallow, not confluent ( Fig. 11A, B, D View Fig ); ischium of third maxilliped rhomboidal, slightly longer than broad sulcus undiscernible ( Fig. 11F View Fig ); inner margin of merus of chelipeds with relatively lower serrated projection ( Fig. 11G View Fig ); carpus of chelipeds rugose, inner angle with broad, low triangular tooth ( Fig. 11A View Fig ); fingers of adult major male chela gaping ( Fig. 11H, I View Fig ); ambulatory legs short, merus of fourth ambulatory legs about half of length of carapace ( Fig. 11A, E View Fig ); male abdomen triangular, somite 6 width and length subequal, subequal to length of telson ( Fig. 11C View Fig ); G1 stout, slightly sinuous, basal segment weakly constricted on distal third; terminal segment slightly curving outwards in dorsal view, almost straight in ventral view ( Fig. 12A, B, D, E View Fig ); G2 with relatively long distal segment, about half length of basal segment ( Fig. 12C View Fig ).
Colour. In life, both sexes are red to reddish-brown with yellow chelipeds ( Fig. 14E, F View Fig ). The colour in females is slightly less striking.
Etymology. The name is derived from the Bidayuh word “sangon” for beautiful, alluding to the striking colour of the crab. The name is used as a noun in apposition.
Remarks. Lepidothelphusa sangon , new species, can be easily distinguished from L. cognettii s. str., L. limau , new species, and L. padawan , new species, by its relatively small adult size (males and females are already fully mature at 8.0 mm carapace width). Its size range is similar to L. flavochela , new species, and L. loi , new species, but distinguishable from the latter by its striking reddish carapace and ambulatory legs ( Fig. 14E, F View Fig versus Figs. 13C, D View Fig , 14A, B View Fig ). It is close to L. limau , but can be distinguished by its more squarish and flat carapace ( Fig. 11B View Fig versus Fig. 5B View Fig ), relatively smaller projection on the merus of the cheliped ( Fig. 11G View Fig versus Fig. 5G View Fig ), narrower gap of the fingers of chela ( Fig. 11H View Fig versus Fig. 5H View Fig ) and relatively shorter G1 ( Fig. 12A, D View Fig versus Fig. 6A, D View Fig ).
Habitat. The habitat is moist rocks and leaf litter, in partially exposed or shaded, small streams in old primary dipterocarp forests. The substrate is mudstone and the site is less than 200 m above sea level.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.