In December 2009 and May 2010 an insect pest was observed on Jatropha curcas L. (Euphorbiaceae) saplings at the Biomass Farm Site, Banthara, of CSIR-National Botanical Research Institute, Lucknow, India. On the basis of morphology of the insect pest and symptoms caused on its host, it was identified as Maconellicoccus hirsutus (Green) (Homoptera: Coccoidae: Pseudococcidae) synonym Phenacoccus hirsutus Green. This is the first report of the occurrence of M. hirsutus infestation on J. curcas.
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