Investigation on Population Distribution of Liriomyza trifolii and L. sativae on Cowpea
Liriomyza trifolii Burgess and L. sativae Blanchard are two important vegetable leafminers in Hainan province. The investigation of population distribution of L. trifolii and L. sativae showed that the population of L. trifolii is over 97%, and L. trifolii is the predominant species of cowpea. The percentage of L. trifolii population reached 71.30%, the growth of cowpea space range is above 80 cm. The percentage of L. sativae population reached 61.29% between 40 and 80 cm. The cowpea spatial niche of two leafminer species are different because of the interspecific competition.