Ethusa longidentata Chen, 1997
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publication ID |
https://doi.org/ 10.5281/zenodo.5399909 |
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DOI |
https://doi.org/10.5281/zenodo.5475546 |
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persistent identifier |
https://treatment.plazi.org/id/264A053E-4E0F-B507-71C2-FF277543C6DC |
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treatment provided by |
Marcus |
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scientific name |
Ethusa longidentata Chen, 1997 |
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Ethusa longidentata Chen, 1997 View in CoL
Ethusa longidentata Chen, 1997: 619 View in CoL , fig. 5.
Ethusa pygmaea View in CoL – Ihle 1916b: 141, 151 (list), 153 (list), 156 (list) (not E. pygmaea Alcock, 1894 View in CoL ).
TYPE MATERIAL. — Holotype: cl 6.5 mm, cw 5.8 mm, damaged, KARUBAR, stn DW 28 ( MNHN-B 22884 ); paratype: cl. 7.0 mm, cw 6.6 mm, same station ( MNHN-B 22889 ).
TYPE LOCALITY. — Indonesia, Kai Islands, 05°31’S, 132°54’E, 448- 467 m.
MATERIAL EXAMINED. — Indonesia. Lesser Sunda Islands, Siboga , stn 51, Flores, south Molo Pass, 69- 91 m, 19.IV.1899, 8, 1 juv., 8, 2 ovig.
( ZMA Crust.De 241692). — Stn 289, off south coast of Timor, 09°0.3’S, 126°24.5’E, 112 m, 20.I.1900, 1 damaged ( ZMA Crust.De 241710).
Kai Islands, KARUBAR, stn DW 28, 05 °31’S, 132°54’E, 448-467 m, 26.X.1991, 1 holotype ( MNHN-B 22884), 1 paratype ( MNHN-B 22889).
Solomon Islands. SALOMON 1, stn CP 1770, 08°19.6’S, 160°38.7’E, 453-542 m, 1.X.2001, 1 ( MNHN-B 28548). — Stn CP 1795, 09°18.8’S, 160°22.9’E, 442-451 m, 1.X.2001, 1 ( MNHN-B 28549).
DISTRIBUTION. — Indonesia (Celebes, Lesser Sunda Is, Irian Jaya [ Ihle 1916b], Kai Is [ Ihle 1916b; Chen 1997]), and now from the Solomon Is. Depth: 69-141 m ( Ihle 1916b), 442-542 m ( Fig. 34 View FIG ).
SIZE. — Maximum size: cl 8.0 mm, cw 7.6 mm ( MNHN-B 28548), cl 7.0 mm, cw 6.6 mm ( MNHN-B 22889).
REMARKS
Ethusa longidentata is a small-size species which is characterized by very long and slender outer orbital teeth ( Chen 1997: fig. 5a), U-shaped orbital sinuses, and by short and stout G1 that are slightly bent in the middle portion ( Chen 1997: fig. 5f-i). The anterior border of the endostome extends above the level of the antennular fossae of the basal antennular articles.
The Siboga material from Indonesia that was identified as E. pygmaea Alcock, 1894 , by Ihle (1916b), is very close, if not conspecific, to E. longidentata . Although the specimens are in poor condition, they clearly share the morphology of their endostomes with E. longidentata . They were collected from depths (69-141 m) shallower than those of E. longidentata (442-542 m), however.
| ZMA |
Universiteit van Amsterdam, Zoologisch Museum |
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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Ethusa longidentata Chen, 1997
| Castro, Peter 2005 |
Ethusa longidentata
| CHEN H. 1997: 619 |
Ethusa pygmaea
| IHLE J. E. W. 1916: 141 |