Larval development rate and mortality of Colorado potato beetle on detached leaves of wildSolanum species

Significant differences were found in larval development rate and mortality of Colorado potato beetle,Leptinotarsa decemlineata (Say), among nine wild, tuber-bearingSolatium species by placing neonate larvae on detached leaves.S. pinnatisectum Hawkes, 5.polyadenium Greenm., andS. trifidum Corn restricted development the most, 5.berthaultii Hawkes was intermediate, andS. canasense Hawkes,S. demissum Lindl.,S. megistacrolobum Bitt.,S. spegazzinii Bitt., andS. tarijense Hawkes restricted development the least. All tested species restricted development more than did the cultivar Kennebec. The measure of larval development rate and mortality was weakly correlated with foliar defoliation in field tests based on species-accession means (r= + 0.6, P