Thrombasia J.L. Barnard, 1966

Kilgallen, N. M. & Lowry, J. K., 2014, The Tryphosa group (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae), Zootaxa 3768 (5), pp. 501-545 : 525

publication ID

https://doi.org/ 10.11646/zootaxa.3768.5.1

publication LSID

lsid:zoobank.org:pub:FACF814C-3221-44CF-9DED-4B808F186C64

DOI

https://doi.org/10.5281/zenodo.4909744

persistent identifier

https://treatment.plazi.org/id/03DE241F-FFB6-FFAC-F0A2-FD6A530FE9D3

treatment provided by

Felipe

scientific name

Thrombasia J.L. Barnard, 1966
status

 

Thrombasia J.L. Barnard, 1966

Thrombasia J.L. Barnard, 1966: 72 .― Ledoyer, 1986: 810.

Schisturella .― Barnard & Karaman, 1991: 526 (in part).

Type species. Thrombasia tracalero J.L. Barnard, 1966 , original designation.

Included species. Thrombasia includes six species: T. evalina sp. nov.; T. grabenis J.L. Barnard, 1967 ; T. rotundata (K.H. Barnard, 1926) ; T. saros sp. nov.; T. tracalero J.L. Barnard, 1966 ; T. umina sp. nov.

Diagnostic description. Antenna 1 flagellum article 1 lacking robust seta on distal margin; accessory flagellum forming cap. Antenna 2 flagellum articles 3–5 slender in female, article 3 enlarged in male; articles 3–5 with brush setae on the anterior margin. Mandibular incisor curved; molar a reduced column with convex triturating surface or proximally setose and distally triturating; palp attached midway. Maxilla 1 ST-7 serrate along the distomedial medial margin; ST-D slender, apically cuspidate. Maxilliped outer plate apical robust setae present. Gnathopod 1 subchelate; coxa slightly to greatly shorter than coxa 2, tapering distally; carpus slightly longer than propodus; propodus palm acute, straight. Pereopod 4 coxa with well developed posteroventral lobe. Uropod 2 inner ramus constricted. Uropod 3 rami plumose setae absent in female, present occasionally in adult male. Telson moderately cleft.

Remarks. The genus Thrombasia was established by Barnard (1966) for T. tracalero , and was subsequently placed in the synonymy of Schisturella by Barnard & Karaman (1991). However, we consider Thrombasia to be distinct from Schisturella based on the gnathopod 1 coxa, which is tapering and slightly reduced, not vestigial as in Schisturella . There are four other genera in the Tryphosa group with a gnathopod 1 coxa that is not vestigial. Of these, Thrombasia may be separated from Gronella by the gnathopod 1 carpus, which is longer than the propodus, from Tryphosa and Bruunosa in the tapering gnathopod 1 coxa, and from Glorieusella in the subchelate gnathopod 1.

Distribution. Pacific Ocean, South Atlantic Ocean.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Amphipoda

Family

Lysianassidae

Loc

Thrombasia J.L. Barnard, 1966

Kilgallen, N. M. & Lowry, J. K. 2014
2014
Loc

Schisturella

Barnard, J. L. & Karaman, G. S. 1991: 526
1991
Loc

Thrombasia J.L. Barnard, 1966: 72

Ledoyer, M. 1986: 810
Barnard, J. L. 1966: 72
1966
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