Singhaplax rhamphe, Castro, 2007
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publication ID |
https://doi.org/ 10.5281/zenodo.4525564 |
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DOI |
https://doi.org/10.5281/zenodo.4525453 |
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persistent identifier |
https://treatment.plazi.org/id/102B87CB-FFEF-250D-FF53-FA03FED9FCD2 |
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treatment provided by |
Felipe |
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scientific name |
Singhaplax rhamphe |
| status |
sp. nov. |
Singhaplax rhamphe View in CoL n. sp.
( Fig. 38 View FIG )
TYPE MATERIAL. — KARUBAR, stn DW 29, ♂ holotype, cl 4.4 mm, cw 7.6 mm ( MNHN-B 30071 ) ; ♂ paratype feminized by Sacculina , cl 4.0 mm, cw 6.7 mm; ♂ paratype, cl 2.3 mm, cw 4.2 mm ( MNHN-B 30072 ) .
TYPE LOCALITY. — Indonesia, Kai Islands, 05°36’S, 132°56’E, 181- 184 m.
MATERIAL EXAMINED. — Indonesia. Kai Is , KARUBAR, stn DW 29, 05°36’S, 132°56’E, 181-184 m, 26.X.1991, ♂ holotype, cl 4.4 mm, cw 7.6 mm ( MNHN-B 30071 ) GoogleMaps ; 1 ♂ paratype feminized by Sacculina , cl 4.0 mm, cw 6.7 mm, 1 ♂ paratype, cl 2.3 mm, cw 4.2 mm ( MNHN-B 30072 ) .
ETYMOLOGY. — From rhamphe, Greek for “curved knife”, noun in apposition, in reference to the curved G1 characteristic of the species.
DISTRIBUTION. — Known only from Indonesia (Kai Is). Depth: 181- 184 m.
DESCRIPTION
Carapace ( Fig. 38A View FIG ) transversely rectangular, much wider than long (1.7 as wide as long in holotype). Carapace convex, without clear indication of regions. Front slightly convex, almost straight. Slight notch between front, inner edge of supraorbital border. Supraorbital borders broad, conspicuously sinuous, smooth, with long simple setae. Suborbital borders conspicuously sinuous, with short, acute granules; conspicuous, triangular inner tooth. Long, slender, acute tooth on outer orbital angle; tooth medially placed on carapace. Lateral borders beyond outer orbital teeth slightly convex, no anterolateral teeth.
Subhepatic, pterygostomial regions, with low, round tubercles.
Eye peduncles ( Fig. 38A View FIG ) long (0.9 front width), cornea elongated, spherical distal margin, not reniform.
Chelipeds (P1) slightly unequal (female unknown); fingers slender, dactylus curved, slightly shorter than propodus, with blunt teeth; no dark colour on fingers; inner (ventral) margin of propodus smooth. Broad tooth on inner (ventral), proximal margin of carpus; outer (dorsal) margin of merus with low tubercles, long simple setae. Ambulatory legs (P2-P5) long, slender, unarmed, varying number of long simple setae; dactyli long, slender, each with 2 carinae along each side; length of P5 merus 0.8 cl.
Male abdomen wide (see abdomen of S. platypoda n. sp., Fig. 36A View FIG ), with 6 freely-movable somites plus telson; telson slightly wider than long. Somite 3 covers most of space between P5 coxae; somite 2 only slightly narrower than somite 3, leaving relatively small portion of thoracic sternite 8 visible. G1 ( Fig. 38B View FIG ) long, slightly wider basal part, curved distal part with small denticles along outer margin; slightly pointed, grooved tip. G2 ( Fig. 38C View FIG ) slender, long, nearly equal or slightly longer than G1, curved flagellum about as long as proximal part (peduncle), tip with terminal spinule.
Female unknown.
REMARKS
Singhaplax rhamphe n. sp. was collected from the same station in the Kai Is, Indonesia as S. dichotoma n. sp. Four other species of Singhaplax were also collected from different stations but in a similar habitat from the same region. All four are morphologically close species that appear to be sympatric (see Remarks for S. orientalis above).
The new species is distinguished from the other described species of Singhaplax by its characteristic G1, which has a curved distal part with small denticles along the outer margin and a grooved tip ( Fig. 38B View FIG ). The tip of the G2 has a terminal spinule ( Fig. 38C View FIG ).
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.
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