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Superfamily Chrysomeloidea - Long-horned and Leaf Beetles

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Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) Endemic to Florida, including descriptions of four new spp.
By Barney, R.J.
The Coleopterists Bulletin 70(1): 31-52., 2016
BioOne

Robert J. Barney. 2016. Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae) endemic to Florida, including descriptions of four new species. The Coleopterists Bulletin 70(1): 31-52.

Abstract
Eight species of Pachybrachis Chevrolat have been found to be endemic to Florida:

Pachybrachis archboldi Barney, new species;
Pachybrachis clarki Barney, new species;
Pachybrachis conformis Suffrian;
Pachybrachis deyrupi Barney, new species;
Pachybrachis discoideus Bowditch;

Definition and revision of the viduatus species-group of North American Pachybrachis Chevrolat (Chrysomelidae: Cryptocephalinae)
By Riley, E.G. and R.J. Barney.
The Coleopterists Bulletin 69(1): 25–59., 2015
BioOne - Abstract and References

Riley, E.G. and R.J. Barney. 2015. Definition and revision of the viduatus species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 69(1): 25–59.

Abstract
The viduatus species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of nine species, including four described as new species:

Pachybrachis bloxham Riley and Barney,

Notes on Pachybrachys and descriptions of new species.
By Bowditch, F.C.
Canadian Entomologist 41: 312-324., 1909
Full Text

Bowditch, F.C. 1909. Notes on Pachybrachys and descriptions of new species. Canadian Entomologist 41: 237-244, 285-292, 312-324.

Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of eastern Canada
By Barney et al.
ZooKeys 332: 95–175., 2013
Barney R, LeSage L, Savard K (2013) Pachybrachis (Coleoptera, Chrysomelidae, Cryptocephalinae) of eastern Canada. ZooKeys 332: 95–175.

Link to Full Text or PDF

Abstract

Seventeen Pachybrachis species occurring in eastern Canada [Ontario (ON), Québec (QC), New Brunswick (NB), Nova Scotia (NS), and Prince Edward Island (PE)] are treated by the authors. Two new national records were discovered, both from southernmost Ontario: P. cephalicus Fall and P. luctuosus Suffrian. Four species were new provincial records: P. cephalicus (ON), P. luctuosus (ON, QC), P. obsoletus Suffrian (NB), P. peccans (PE).

A review of the subgenus Pachybrachis Chevrolat, 1837 s.str. of Palaearctic region (Coleoptera: Chrysomelidae: Cryptocephalinae)
By Warchalowski A.
Genus 19: 213-283, 2008

A revision of the North American species of Pachybrachys
By H. C. Fall
Transactions of the American Entomological Society, Vol. 41, No. 3: 291–486 , 1915

A new species of Phaedon Megerle von Mühlfeld, 1823 (Coleoptera: Chrysomelidae: Chrysomelinae) from Utah and Colorado, USA.
By Clark, S.M. and A.J. Gilbert.
The Coleopterists Bulletin, 73(1):193-199., 2019
BioOne

Clark, S.M. and A.J. Gilbert. 2019. A new species of Phaedon Megerle von Mühlfeld, 1823 (Coleoptera: Chrysomelidae: Chrysomelinae) from Utah and Colorado, USA. The Coleopterists Bulletin, 73(1):193-199.

Abstract

Phaedon uinta Clark and Gilbert, new species, is described from Utah and Colorado, USA, and placed in the subgenus Phaedon Megerle von Mühlfeld, 1823. The adult host is Lepidium eastwoodiae Wooten (Brassicaceae). Illustrations are provided for P. uinta and for the similar species Phaedon purpureus (Linell, 1897).

A taxonomic revision of the genus Phaedon north of Mexico (Coleoptera: Chrysomelidae)
By Balsbaugh E.U.
North Dakota Insects Schafer-Post Series 15, 73 pp., 1983

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