Development of Araecerus coffeae (Fabricius) (Coleoptera: Anthribidae) on Panax ginseng C. A. Meyer roots

Araecerus coffeae (Fabricius) is a beetle of considerable economic importance. Its occurrence is cosmopolitan, though it is more common in the tropical and subtropical countries. The aim of this experiment was to study the development of coffee bean weevil on two different kinds of ginseng roots, compared with data obtained on corn and coffee grains. Tests were carried out under laboratory condition at a fixed temperature and relative humidity. It was observed that the time of development is the shortest on spindle-shaped, bipartite ginseng roots and the number of emerging adults is higher on corn and coffee grains. Secondary ginseng roots do not allow the development of A. coffeae.