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Plant damages caused by leafhopper, Empoasca terminalis Distant (Homoptera: Cicadellidae) on\udsoybean were first encountered in 2007 in Makassar, South Sulawesi. The insect has been constantly\udassociated with soybean crops in the province ever since. The purposes of the present study were to\ud(i) evaluate potential yield loss attributable to the leafhopper in an experimental set up, (ii) seasonal\udabundance of E. terminalis, and (iii) distribution of E. terminalis in all major soybean-producing\udareas in the province. Potential yield loss due to the leafhopper was assessed in a field experiment\udusing two large plots. One of the plots was kept leafhopper-free by weekly insecticide sprays; and\udthe other plot was left unsprayed to allow leafhopper infestation to occur. Adult abundance was\udweekly monitored using a sweep net throughout the season. Nymph abundance was determined by\uddirect count on the plant leaves. Leafhopper distribution was assessed through surveys conducted\udin all major soybean-producing areas in South Sulawesi, from 2009???2013. The results of the\udstudy showed that E. terminalis caused an average yield loss of 26% on susceptible crops without\udinsecticide use. First leafhopper infestation in all planting seasons occurred two weeks after the plant\udemergence. Rainfall negatively correlated with the leafhopper abundance. The leafhopper existed\udin all major soybean production areas in the province. Therefore, our results confirmed the status of\udE. terminalis as an important soybean pest in the region. In addition, crops planted early in the dry\udseason could escape from heavy leafhopper infestation

Potential damages, seasonal abundance and distribution of Empoasca terminalis Distant (Homoptera: Cicadellidae) on soybean in South Sulawesi