Macrobrachium placidulum ( de Man, 1892 )

Mazancourt, Valentin De, Marquet, Gerard, Wowor, Daisy & Keith, Philippe, 2024, Macrobrachium ngankeeae, a new species of freshwater shrimp (Crustacea: Decapoda: Palaemonidae) from Papua Barat Province, Indonesia, Zootaxa 5476 (1), pp. 253-266 : 261-262

publication ID

https://doi.org/ 10.11646/zootaxa.5476.1.22

publication LSID

lsid:zoobank.org:pub:C516B01A-3ED7-49BC-B695-0E8AC554D52D

DOI

https://doi.org/10.5281/zenodo.12727097

persistent identifier

https://treatment.plazi.org/id/03D0304B-FFF1-D158-FF43-F0D6CD04E2D8

treatment provided by

Plazi

scientific name

Macrobrachium placidulum ( de Man, 1892 )
status

 

Macrobrachium placidulum ( de Man, 1892) View in CoL

Palaemon (Macrobrachium) placidulus de Man, 1892: 489 View in CoL , pl. 28, fig. 48.

Macrobrachium placidulum View in CoL . — Holthuis, 1950: 253, fig. 51c; Chace & Bruce, 1993: 35, fig. 14; Chen et al. 2009: 234, tab. 2; Eguia et al. 2009: 36; Keith et al. 2010: 76; Keith et al. 2013: 112; Saeki et al. 2018: 42, fig. 5E–F, 7.

Type material. Syntypes: 2 males (cl 11.1–11.4 mm), 2 ovigerous females (cl 9.2 mm), RMNH D 2582 About RMNH , Nusa Tenggara Timur Province , Flores Island, Sikka Regency, Sg. Wukur, coll. M. Weber , 1888–1889; 1 male (cl 8.9 mm), 1 ovigerous female (cl 10.2 mm), ZMA De 102.569, Nusa Tenggara Timur Province, Flores Island, Ende Regency, Sg. Nanga Ba, coll. M. Weber , 1888–1889; 1 male (cl 13.3 mm), 3 females (cl 9.0– 11.4 mm), ZMA De 102.565, Sulawesi Selatan Province, Salayar Island, Sg. Bangkalan, coll. M. Weber , 1888–1889.

Other material examined. INDONESIA: 1 ovigerous female (cl 7.5 mm), MZB Cru 5354, Papua Barat Province, Kaimana Regency, Buruway District , Ds. Karawawi , Sg. Kunafa station 2, 04°03.532’S 133°06.103’E, 30 m asl, coll. P. Keith, P. Gaucher, G. Ségura, 14 October 2010 GoogleMaps ; 1 ovigerous female (cl 9.8 mm; MNHN-IU-2016- 11889), 1 ovigerous female (cl 9.4 mm; MZB Cru 5355), 1 ovigerous female (cl 9.3 mm; MNHN-IU-2016-11891), 1 male (cl 7.4 mm; MZB Cru 5356), Papua Barat Province, Kaimana Regency , Kaimana District , Ds. Jarati , Sg. Kumbawa , 04°09.943’S 133°09.292’E, 77 m asl, coll. P. Keith, P. Gaucher, G. Ségura, 15 October 2010 GoogleMaps ; 1 male (cl 8.7 mm), 1 female (cl 8.5 mm), 1 ovigerous female (cl 9.0 mm), MNHN-IU-2019-413, Papua Barat Province, Kaimana Regency, Kaimana District, Ds. Jarati, Sg. Kumbawa , 04°09.943’S 133°09.292’E, 77 m asl, coll. P. Keith, P. Gaucher, G. Ségura, 15 October 2010 GoogleMaps ; 2 ovigerous females (cl 8.9–9.9 mm; MNHN-IU-2019-411), 1 female and 2 ovigerous females (cl 8.9, 8.9, 9.9 mm; MZB Cru 5357), Papua Barat Province, Kaimana Regency, Teluk Etna District , Ds. Kayu Merah , Sg. Kayu Merah, 3°53.291’S 134°28.654’E, coll. P. Keith, P. Gaucher, G. Ségura, 22 October 2010 GoogleMaps . PALAU: Babelthuap: 1 ovigerous female (cl 9.1 mm), MNHN-IU-2018-2378, Tireloch R., 7°36.527’N 134°36.958’E, 5 m asl, coll. P. Keith, G. Marquet, L. Taillebois, M. Castelin, P. Gerbeaux, 28 February 2011 GoogleMaps . PAPUA NEW GUINEA: New Britain: 3 males (cl 10.9–11.3 mm), 1 female (cl 7.8 mm), 3 ovigerous females (cl 7.8–10.mm), MNHN-IU-2016-11904, Crusher R., 05°38.603’S 150°10.957’E, coll. P. Keith, R. Causse, C. Lord, 31 October 2018 GoogleMaps ; 1 male (cl 7.3 mm), MNHN-IU-2016-11902, Garu road, 5°27.278’S 149°58.415’E, coll. P. Keith, R. Causse, C. Lord, 26 October 2018 GoogleMaps ; 1 juvenile (cl 4.8 mm), MNHN-IU-2017-9323, Gavuvu R., 05°28.733’S 150°23.557’E, coll. P. Keith, R. Causse, C. Lord, 27 October 2018 GoogleMaps . SAMOA: Upolu: 3 ovigerous females (cl 7.6–9.3 mm, MNHN-IU-2016-10635 (formerly MNHN-Na-17505), Namoi R., 13°57.023’S 171°30.994’W, coll. P. Gerbeaux, P. Keith, G. Marquet, 23 July 2008 GoogleMaps . SOLOMON ISLANDS: Choiseul: 1 male (cl 11.9 mm), MNHN-IU-2016-11900, Gu’ma R., 07°02.328’S 156°49.571’E, 70 m asl, coll. P. Keith, P. Gerbeaux, G. Marquet, 17 October 2014 GoogleMaps ; 1 male (cl 13.0 mm), MNHN-IU-2016-11857 ( CA2523 ), Tutuku R., coll. P. Keith, R. Causse, C. Lord, 19 October 2019 ; Kolombangara: 1 ovigerous female (cl 8.9 mm), MNHN-IU-2016-11936, Poitete R., 07°52.413’S 157°07.982’E, coll. P. Keith, C. Lord, G. Marquet, 15 November 2015 GoogleMaps . Ranongga: 1 male (cl 9.6 mm; MNHNIU-2017-9443), 1 male (cl 8.4 mm; MNHN-IU-2016-11858; CA2601 ), Poro R., 08°03.082’S 156°35.711’E, coll. P. Keith, C. Lord, 24 October 2016 GoogleMaps . VANUATU: Malekula : 1 male (cl 14.3 mm; MNHN-IU-2016-11897), 1 male (cl 12.9 mm; MNHN-IU-2016-11898), 1 male (cl 18.2 mm; MNHN-IU- 2016-11899), Brenwé R., 16°07.593’S 167°16.779’E, coll. P. Keith, P. Feutry, C. Lord & L. Taillebois, 20 November 2008 GoogleMaps ; Pentecost: 2 males (cl 9.6–11.1 mm), MNHN-IU-2017-9362, Bayomo R., coll. P. Keith, P. Feutry, C. Lord & L. Taillebois, 26 October 2010 ; Santo: 1 male (cl 11.3 mm), MNHN-IU-2017-9410, Mamara R., coll. M. Pouilly, 8 November 2006 .

Diagnosis. Medium-sized species with subcylindrical body form. Rostrum short, tip slightly extend beyond end second article of antennular peduncle but never reach end of third article of antennular peduncle; slender; dorsal carina convex, with total 10–12 teeth, 4–6 teeth completely postorbital; ventral carina convex with 2 or 3 teeth. Carapace glabrous. Ocular beak absent or very poorly developed. Third maxilliped with exopod longer than ischiomerus. Second pereiopods robust, dissimilar in shape, unequal in size; distal part of dactylus and pollex of major second pereiopod with double row of tubercles each, fingers shorter than palm, carpus long conical, carpus shorter than chela, carpus longer than merus; cutting edges of minor second pereiopod gaping, densely covered with long stiff setae concealing surface; all articles covered with modified squamiform and mamilliform setae. Third, fourth and fifth pereiopods with modified squamiform setae and few scattered short stiff setae. T4 without median process. Pre-anal carina well developed. Uropods glabrous, exopod with mobile mesial spine longer than distolateral tooth. Developed eggs small, maximum size 0.6 × 0.5 mm, ovoid, numerous.

Distribution. Commonly found in the Indo-West Pacific from south coast of Java to eastern Indonesia, the Philippines, Taiwan and subtropics Japan to Palau, Vanuatu, New Caledonia, Futuna, Fiji and Samoa.

RMNH

National Museum of Natural History, Naturalis

ZMA

Universiteit van Amsterdam, Zoologisch Museum

MZB

Museum Zoologicum Bogoriense

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Palaemonidae

Genus

Macrobrachium

Loc

Macrobrachium placidulum ( de Man, 1892 )

Mazancourt, Valentin De, Marquet, Gerard, Wowor, Daisy & Keith, Philippe 2024
2024
Loc

Macrobrachium placidulum

Saeki, T. & Maeda, K. & Naruse, T. 2018: 42
Keith, P. & Marquet, G. & Gerbeaux, P. & Vigneux, E. & Lord, C. 2013: 112
Keith, P. & Marquet, G. & Lord, C. & Kalfatak, D. & Vigneux, E. 2010: 76
Chen, R. - T. & Chu, F. T. & Tzeng, W. - N. 2009: 234
Eguia, M. R. R. & Dejarme, H. E. & Rosario, W. R. & Roxas, E. C. & Wowor, D. 2009: 36
Chace, F. A. Jr. & Bruce, A. J. 1993: 35
Holthuis, L. B. 1950: 253
1950
Loc

Palaemon (Macrobrachium) placidulus

de Man, J. G. 1892: 489
1892
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF