PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Hygrotus

Insecta - Coleoptera - Dytiscidae

Taxonomy

Hygrotus was named by Stevens (1828). It is extant. It is the type genus of Hygrotini.

It was assigned to Hygrotini by Nilsson (2001), Bouchard et al. (2011) and Villastrigo et al. (2017).

Species

H. (Coelambus), H. (Hygrotus), H. (Leptolambus), H. cribrarius, H. derelictus, H. disjectus, H. dzieduszyckii, H. ganglbaueri, H. infernalis, H. latefasciatus, H. miocenus, H. niedzwiedzkii, H. ozokeriticus, H. picipoides

Synonymy list

Year	Name and author
1828	Hygrotus Stevens
2001	Hygrotus Nilsson p. 268
2011	Hygrotus Bouchard et al.
2017	Hygrotus Villastrigo et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa
—	Panarthropoda
phylum	Arthropoda	Latreille 1829
superclass	Hexapoda	Latreille 1825
class	Insecta
—	Dicondylia
—	Paranotalia
subclass	Pterygota	()
—	Neopterygota	Crampton 1924

Rank	Name	Author
infraclass	Neoptera	Martynov 1923
—	Holometabola
—	Aparaglossata
—	Neuropteriformia
—	Coleopterida
order	Coleoptera
—	Mesocoleoptera
—	Metacoleoptera
suborder	Adephaga
family	Dytiscidae	()
subfamily	Hydroporinae	()
tribe	Hygrotini	Portevin 1929
genus	Hygrotus	Stevens 1828

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. Hygrotus Stevens 1828

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Subg. Hygrotus (Coelambus) Thomson 1860

Subg. Hygrotus (Hygrotus) Stephens 1828

Subg. Hygrotus (Leptolambus) Villastrigo et al. 2017

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Hygrotus (Leptolambus) impressopunctatus Schaller 1783

Hygrotus (Leptolambus) novemlineatus Stephens 1829

Hygrotus (Leptolambus) parallellogrammus Ahrens 1812

†Hygrotus cribrarius Scudder 1900

†Hygrotus derelictus Scudder 1900

†Hygrotus disjectus Scudder 1900

†Hygrotus dzieduszyckii Lomnicki 1894

†Hygrotus ganglbaueri Lomnicki 1894

†Hygrotus infernalis Scudder 1900

†Hygrotus latefasciatus Lomnicki 1894

†Hygrotus miocenus Wickham 1912

†Hygrotus niedzwiedzkii Lomnicki 1894

†Hygrotus ozokeriticus Lomnicki 1894

†Hygrotus picipoides Lomnicki 1894

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

chitinc

Environment:

terrestrialc

Locomotion:

actively mobilep

Created:

2017-04-17 09:56:18

Modified:

2017-04-17 09:56:18

Source: c = class, p = phylum

References: Bush and Bambach 2015, Kiessling 2004

Age range

Maximum range based only on fossils: base of the Chadronian to the top of the Late/Upper Pleistocene or 37.20000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 33.9 Ma

Collections (12 total)

Time interval	Ma	Country or state	Original ID and collection number
Priabonian	38.0 - 33.9	United Kingdom (England)	H. sp. (123959)
Chadronian	37.2 - 33.9	USA (Colorado)	Coelambus miocenus (106381 106384 113749)
Gelasian	2.588 - 1.806	Greenland	H. sp. (160109)
Late/Upper Pleistocene	0.129 - 0.0117	Canada (Ontario)	Coelambus cribrarius (152576) Coelambus derelictus, Coelambus disjectus (152577) Coelambus infernalis (152575)
Late/Upper Pleistocene	0.129 - 0.0117	USA (Washington)	H. sp. (167662)
Late/Upper Pleistocene	0.129 - 0.0117	Russian Federation (Astrakhan)	Coelambus parallelogrammus (125794)
Late/Upper Pleistocene	0.129 - 0.0117	United Kingdom (Worcestershire)	H. novemlineatus, H. impressopunctatus (163070)
Late/Upper Pleistocene	0.129 - 0.0117	Ukraine	Coelambus picipoides, Coelambus dzieduszyckii, Coelambus niedzwiedzkii, Coelambus ganglbaueri, Coelambus latefasciatus, Coelambus ozokeriticus (153476)