Chalchas is a genus of South American beetles in the family Melyridae,GBIF: Chalchas Blanchard, 1845Biolib: Genus Chalchas Blanchard, 1845 very commonly misspelled as Chalcas (e.g.iNaturalist: Chalcas).
Species Chalchas bremei Fairmaire, 1847 Chalchas cyaneus Fairmaire, 1847 Chalchas fairmairei Bourgeois, 1900 Chalchas fumatus Fairmaire, 1849 Chalchas humeralis Fairmaire, 1847 Chalchas lajoyei Pic, 1919 Chalchas lateralis Fairmaire, 1847 Chalchas lineatocollis Fairmaire, 1847 Chalchas lugubris Fairmaire, 1849 Chalchas obesus Fairmaire, 1847 Chalchas plicatus Pic, 1919 Chalchas sallei Fairmaire, 1878 Chalchas sexplagiatus Fairmaire, 1847 Chalchas suturalis Pic, 1921 Chalchas trabeatus Fairmaire, 1847 Chalchas turgidus Erichson, 1848 Chalchas unicolor Fairmaire, 1847
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