Inseticida vegetal: the insecticidal effect of roots and leaves of Cyperus rotundus on Diabrotica speciosa through alternative methods of extraction.

http://www.scielo.br/scielo.php?pid=S1807-86212011000400007&script=sci_arttext

foto Diabrotica speciosa
http://www.insetologia.com.br/2012_11_18_archive.html