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Hemigrapsus

Malacostraca - Decapoda - Varunidae

Taxonomy
Hemigrapsus was named by Dana (1851). It is extant.

It was assigned to Grapsidae by Rathbun (1926); and to Varuninae by Schweitzer et al. (2010), Schweitzer et al. (2023).

Synonymy list
YearName and author
1851Hemigrapsus Dana
1926Hemigrapsus Rathbun p. 31
2010Hemigrapsus Schweitzer et al. p. 143
2023Hemigrapsus Schweitzer et al. p. 9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
—Deuteropoda
—Mandibulata
—PancrustaceaZrzavý and Štys 1997
—Hymenostraca(Rolfe 1969)
superclassMulticrustaceaRegier et al. 2010
classMalacostraca()
RankNameAuthor
subclassEumalacostracaGrobben 1892
—CaridoidaHessler 1982
orderDecapoda
suborderPleocyemataBurkenroad 1963
—Reptantia(Boas)
—MeiuraSaint Laurent 1980
infraorderBrachyura()
—Eubrachyurade Saint Laurent 1980
—ThoracotremataGuinot 1977
superfamilyGrapsoideaMacLeay 1838
familyVarunidaeMilne-Edwards 1853
subfamilyVaruninaeMilne-Edwards 1853
genusHemigrapsusDana 1851

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Hemigrapsus Dana 1851
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: chitinc
Locomotion: actively mobilec
Life habit: infaunalsuperf
Diet: detritivoresuperf
Vision: well-developedc
Created: 2022-08-23 13:46:39
Modified: 2022-09-18 00:50:49
Source: superf = superfamily, c = class
References: Aberhan 1992, Valdez and Clapham 2023

Age range

Maximum range based only on fossils: base of the Middle Pleistocene to the top of the Late/Upper Pleistocene or 0.77400 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 0.129 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Pliocene - Holocene5.333 - 0.0USA (California) H. sp. (138983)
Pleistocene2.588 - 0.0117USA (California) H. nudus (138720) H. nudus, H. oregonensis (138719)
Pleistocene - Holocene2.588 - 0.0USA (California) H. nudus (138721) H. oregonensis (138724)
Middle Pleistocene0.774 - 0.129USA (California) H. nudus, H. oregonensis (138723)
Late/Upper Pleistocene0.129 - 0.0117USA (California) H. nudus, H. oregonensis (160361)