The calcium content was lowest in H. olivaceous and highest in L. indicus, whereas magnesium lowest in C. tripunctatus and highest H. olivaceous. No significant difference of iron concentration was observed between C. servilia and C. tripunctatus, but there were significant differences among the remaining species at a 5% probability level. The zinc content was lowest in C. tripunctatus and highest in L. indicus. The copper content was relatively low in all species except L. maculatus.