Talorchestia Dana, 1852b
publication ID |
https://doi.org/ 10.11646/zootaxa.4319.3.1 |
publication LSID |
lsid:zoobank.org:pub:67558747-9346-4561-8Ca5-Fb15Cdc7840B |
DOI |
https://doi.org/10.5281/zenodo.6021785 |
persistent identifier |
https://treatment.plazi.org/id/03CF87EB-FFE0-F151-CB8A-99F8FE9EC0E2 |
treatment provided by |
Plazi |
scientific name |
Talorchestia Dana, 1852b |
status |
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Talorchestia Dana, 1852b View in CoL
Orchestia (Talorchestia) Dana, 1852b: 310 .— Dana, 1853: 851.— Spence Bate, 1857: 135.
Talorchestia View in CoL .— Stebbing, 1888: 262 (in part).— Stebbing, 1891: 328 (in part).— Chevreux, 1893: 127.— Stebbing, 1906: 543 (in part).— Stephensen, 1948: 7 (in part).— Hurley, 1956: 359 (in part.).— Morino & Miyamoto, 1988: 91.— Miyamoto & Morino, 1999: 170.— Lowry & Springthorpe, 2009: 905.
Talorchestes , Thalorchestia .— Filhol, 1885: 459, 461, planches 28 [not seen].
Type species. Talitrus gracilis Dana, 1852a , monotypy.
Included species. Talorchestia includes 14 species: T. brucei Lowry & Springthorpe, 2009 ; T. bunaken sp. nov.; T. dampieri Lowry & Springthorpe, 2015b ; T. dili sp. nov.; T. gracilis Dana, 1852a ; T. martensii ( Weber, 1892) ; T. mindorensis Oleröd, 1970 ; T. morinoi Othman & Azman, 2007 ; T. qeshm Lowry & Momtazi, 2015 ; T. seringat sp. nov.; T. sipadan sp. nov.; T. spinipalma Dana, 1852a ; T. terraereginae Haswell, 1880 ; and T. yoyoae sp. nov.
Diagnostic description. Head. Eye medium (1/5–1/3 head length), or large (greater than 1/3 head length). Antenna 1 short, rarely longer than peduncular article 4 of antenna 2. Antenna 2 peduncular articles slender, article 3 without plate or process ventrally; flagellum final article large, cone-shaped forming a virgula divina, with apical cluster of 'imbricated' setae. Mandible left lacinia mobilis with 5 or 6 cusps (sixth minute). Maxilliped palp article 2 distomedial lobe well developed; article 4 fused with article 3.
Pereon. Gnathopod 1 parachelate; posterior margin of carpus and propodus each with lobe covered in palmate setae; palm transverse or obtuse. Gnathopod 2 subchelate; carpus and propodus each without lobe covered in palmate setae; dactylus not modified distally, blunt, shorter than propodus. Pereopods 3–7 cuspidactylate. Pereopod 4 dactylus thickened proximally with a notch midway along posterior margin. Pereopod 5 dactylus long, slender. Pereopod 6 subequal or shorter than 7. Pereopods 6 –7 not sexually dimorphic.
Pleon. Pleonite 1–3 without dorsal spines. Pleopods all well developed, biramous. Epimera 1–3 without slits just above ventral margins. Uropod 1 peduncle distolateral robust seta present or absent, rami without apical spear-shaped setae; inner ramus with marginal robust setae in 1 or 2 rows; outer ramus without marginal robust setae. Uropod 2 rami without apical spear-shaped setae; inner ramus with marginal robust setae in 2 rows; outer ramus with marginal robust setae in 1 row. Uropod 3 ramus subequal in length or shorter than peduncle. Telson longer than broad, tapering distally, apically incised, with 3–10 marginal and apical robust setae per lobe.
Remarks. Based on the short first antenna, male parachelate gnathopod 1 with palmate lobes on the carpus and propodus, pereopod 5 with slender dactylus, not inflated, uropods 1–2 without spear-shaped seta and uropod 1 without robust setae on the outer ramus Talorchestia Dana, 1852b and Sinorchestia Miyamoto & Morino, 1999 are very similar genera. Sinorchestia overlaps with Talorchestia in Taiwan. It is clearly distinguished from the all other genera by the ventral plate on peduncular article 3 of antenna 2.
Talorchestia View in CoL also appears to be very similar to the not so well know genus Vietorchestia Dang & Le, 2011 View in CoL . In characters that are known Vietorchestia View in CoL has a distinctively shaped gnathopod 2. Two characters separate these genera: the maxilliped palp article 2 has a well-developed medial lobe in Talorchestia View in CoL (a straight margin in Vietorchestia View in CoL ) and the uropod 2 inner ramus has one row of marginal robust setae in Vietorchestia View in CoL (two rows in Talorchestia View in CoL ).
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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Talorchestia Dana, 1852b
Azman, B. A. R. 2017 |
Talorchestia
Lowry 2009: 905 |
Miyamoto 1999: 170 |
Morino 1988: 91 |
Hurley 1956: 359 |
Stephensen 1948: 7 |
Stebbing 1906: 543 |
Chevreux 1893: 127 |
Stebbing 1891: 328 |
Stebbing 1888: 262 |
Talorchestes
Filhol 1885: 459 |
Orchestia (Talorchestia)
Spence 1857: 135 |
Dana 1853: 851 |
Dana 1852: 310 |