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Subtribe Pachybrachina


Geographical variation in Pachybrachis othonus (Coleoptera: Chrysomelidae) with descriptions of a new subspecies
By Edward U. Balsbaugh
Annals of the Entomological Society of America, Volume 66, Issue 2, Pages 252–261, 1973

Geographical variation in Pachybrachis nigricornis (Coleoptera: Chrysomelidae).
By Balsbaugh Jr, E.U. and W.L. Tucker.
The Coleopterists Bulletin 30(2): 117–131., 1976
JSTOR

Balsbaugh Jr, E.U. and W.L. Tucker. 1976. Geographical variation in Pachybrachis nigricornis (Coleoptera: Chrysomelidae). The Coleopterists Bulletin 30(2): 117–131.

Definition and revision of spumarius species-group of North American Pachybrachis Chevrolat (Chrysomelidae: Cryptocephalinae)
By Barney, R.J.
The Coleopterists Bulletin 71(3): 449-460., 2017
BioOne

Barney, R.J. 2017. Definition and revision of the spumarius species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 71(3): 449-460.

Abstract
The spumarius species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of one species: Pachybrachis spumarius Suffrian, 1852. A male specimen of P. spumarius, recently discovered in the Natural History Museum in London among some previously unrecognized type material of Suffrian, is herein designated as a lectotype.

Definition and revision of the pectoralis species-group of eastern North American Pachybrachis (Chrysomelidae: Cryptocephalinae)
By Barney
The Coleopterists Bulletin 72(3): 471-499., 2018
BioOne

Barney, R.J. 2018. Definition and revision of the pectoralis species-group of eastern North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 72(3): 471-499.

Abstract

The pectoralis species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of seven species:

Pachybrachis clarki Barney,
Pachybrachis diversus Fall,
Pachybrachis obsoletus Suffrian,
Pachybrachis peccans Suffrian,
Pachybrachis pectoralis (F. E. Melsheimer),

Definition and revision of pubescens species-group of NA Pachybrachis (Chrysomelidae), including descriptions of three n. spp.
By Barney, R.J.
The Coleopterists Bulletin, 73(4): 1017-1048., 2019
BioOne

Barney, R.J. 2019. Definition and revision of the pubescens species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), including descriptions of three new species. The Coleopterists Bulletin, 73(4): 1017-1048.

Abstract

The pubescens species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of 12 species:

P. analis LeConte;
P. baja Barney, new species;
P. connexus Fall;
P. donneri Crotch;
P. gilberti Barney, new species;

Revision of the Griburius scutellaris (Fabricius, 1801) species group (Coleoptera: Chrysomelidae: Cryptocephalinae)
By Sassi, D.
Zootaxa, 5315(6): 501-548., 2023
Sassi, D. (2023) Revision of the Griburius scutellaris (Fabricius, 1801) species group (Coleoptera: Chrysomelidae: Cryptocephalinae). Zootaxa, 5315(6): 501-548.

Abstract

Ten species of Griburius Haldeman, 1849, morphologically similar to each other, and some of their synonyms are revised, figured and discussed. Among them is G. scutellaris (Fabricius, 1801), the type species of Griburius.

Seven of the studied species are already described:

Griburius albilabris (Suffrian, 1852),
Griburius boucardi (Jacoby, 1880),
Griburius errans (Suffrian, 1852),
Griburius larvatus Newman, 1840,

Definition and revision of the cylindricus Species-Group of Pachybrachis (Chrysomelidae), including descriptions of six new spp.
By Barney, R.J.
The Coleopterists Bulletin 75(4): 723-748., 2021
BioOne

Barney, R.J. 2021. Definition and revision of the cylindricus Species-Group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), including descriptions of six new species. The Coleopterists Bulletin 75(4): 723-748.

Abstract

Six new species of Pachybrachis Chevrolat from the southwestern United States are described.

Pachybrachis ashfork Barney, new species,
Pachybrachis ephedra Barney, new species,
Pachybrachis huachuca Barney, new species,
Pachybrachis hurricane Barney, new species,

Redescription of five species of Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) of the Western USA.
By Barney, R.J.
The Coleopterists Bulletin 75(2):485-496., 2021
BioOne

Barney, R.J. 2021. Redescription of five species of Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) of the Western USA, including new synonymies, records of greatly expanded ranges into the Eastern USA, and new plant associations. The Coleopterists Bulletin 75(2): 485-496.

Abstract

An effort to identify a series of Pachybrachis Chevrolat, 1836 specimens from an eastern USA nature preserve led to the study of five western USA species:

Pachybrachis alticola Fall,
Pachybrachis conspirator Fall,