Key to the subfamilies of Chrysomelidae known

1.Head with vertex projecting strongly forward and mouth directed posteriorly below and often partly hidden by prosternum; pronotum margined laterally; larvae dorso-ventrally flattened

 

1.Head normal, with the vertex not projecting forward and with the mouth directed forward and downward; larvae not dorso-ventrally flattened
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Author: Dr Charles Staines