Myochrous is a genus of leaf beetles in the subfamily Eumolpinae. It is known from North, Central and South America. There are over 50 described species in Myochrous. The generic name is a combination of the Ancient Greek words (mouse) and (color).
The southern corn leaf beetle (Myochrous denticollis) is a crop pest, and has been reported to damage corn in Illinois. Additionally, the species Myochrous melancholicus has been reported to damage banana fruit.
According to BugGuide and ITIS, the genus is now placed in the tribe Eumolpini instead of Adoxini.
Species
Myochrous adisi Medvedev, 2004 – Brazil Myochrous armatus Baly, 1865 (cane leaf or bud beetle) – Brazil, Uruguay, Argentina, Chile Myochrous austrinus Blake, 1950 – United States (Arizona), Mexico Myochrous barbadensis Blake, 1947 Myochrous barbadensis barbadensis Blake, 1947 – Barbados, Grenada, Trinidad, Guyana, Suriname Myochrous barbadensis coenus Blake, 1950 – Panama, Colombia, Venezuela Myochrous blakeae Shute, 1974 – Nicaragua Myochrous bolivianus Blake, 1950 – Bolivia Myochrous brunneus Blake, 1950 – Brazil Myochrous bryanti Blake, 1950 – Trinidad Myochrous calcariferus Blake, 1950 – Bolivia Myochrous carinatus Jacoby, 1891 – Belize Myochrous chacoensis Blake, 1950 – Argentina Myochrous crassimarginatus Blake, 1950 – French Guiana Myochrous cubensis Blake, 1947 – Cuba Myochrous curculionoides Lefèvre, 1897 – Brazil Myochrous cyphus Blake, 1950 – United States (Texas, New Mexico), Mexico Myochrous darlingtoni Blake, 1950 – Colombia Myochrous denticollis (Say, 1824) (southern corn leaf beetle) – eastern Canada and US, Mexico Myochrous elachius Blake, 1950 – Panama, Colombia Myochrous explanatus Baly, 1865 – Venezuela, Colombia, Bolivia Myochrous femoralis Jacoby, 1882 – Belize Myochrous figueroae Brèthes, 1923 – Argentina Myochrous floridanus Schaeffer, 1933 Myochrous floridanus floridanus Schaeffer, 1933 – United States (Virginia to Florida to Louisiana) Myochrous floridanus texanus Blake, 1950 – United States (Texas) Myochrous geminus Blake, 1950 – Ecuador, Peru Myochrous hispaniolae Blake, 1947 – Haiti, Dominican Republic Myochrous immundus Erichson, 1847 – Peru, Chile Myochrous intermedius Blake, 1950 – United States (Iowa to Texas) Myochrous jamaicensis Blake, 1947 – Jamaica Myochrous latisetiger Blake, 1950 – Colombia, Venezuela Myochrous leucurus Blake, 1950 – French Guiana Myochrous longipes Blake, 1950 – Colombia, Peru, Venezuela, Brazil, Bolivia Myochrous longulus LeConte, 1858 – western US, Mexico Myochrous magnus Schaeffer, 1904 – United States (Texas), Mexico Myochrous mamorensis Blake, 1950 – Bolivia Myochrous melancholicus Jacoby, 1882 – Mexico Myochrous monrosi Blake, 1950 – Argentina Myochrous movallus Johnson, 1931 – United States (South Dakota to Texas) Myochrous nanus Blake, 1950 – Bolivia, Paraguay Myochrous normalis Blake, 1950 – Paraguay Myochrous paulus Blake, 1950 – Guyana, French Guiana, Suriname, Venezuela Myochrous pauxillus Schaeffer, 1933 – United States (Texas) Myochrous platylonchus Blake, 1950 – Panama, Colombia, Venezuela Myochrous portoricensis Blake, 1947 – Puerto Rico Myochrous ranella Blake, 1950 – United States (Virginia to Florida to Louisiana) Myochrous rhabdotus Blake, 1950 – Trinidad, Guyana Myochrous sallei Baly, 1865 – Mexico Myochrous sapucayensis Blake, 1950 – Paraguay Myochrous severini Blake, 1950 – United States (North Dakota, South Dakota) Myochrous spinipes Blake, 1950 – Venezuela Myochrous squamosus LeConte, 1859 – western North America Myochrous stenomorphus Blake, 1950 – Argentina Myochrous tibialis Jacoby, 1882 – Mexico, Belize, Guatemala Myochrous whitei Blake, 1950 – United States (California)
Species doubtfully included in the genus: Myochrous dubius (Fabricius, 1801) – "America meridionali", possibly from Saint Croix?
References