Studies on the Biological Characteristics and Control Method of Hypocala subsatura Guenee

Hypocala subsatura Guenée is a major pest damaging young plant of non-astringent type of Persimmon. Studies on its biology and control were carried out in Fuyang County, Zhejiang Province in 1990~ 1992. The paper describes the life history, law of distribution of eggs and feeding habit of larvae. This insect has 2 to 3 generations a year, overwintering with pupa in soil. The relationship between seedlings of different combinations of stock and scion of non-astringent type of Persimmon has been studied. Experimental result showed that to kill the larvae, spray of 1:1500 Fenvalerate was effective.