Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Studies on the biology and control of Peridroma saucia Hubner.

Abstract

The biology of the noctuid Peridroma saucia was studied in Zhaojue and Liangshan Yi Autonomous Prefecture, China, in 1977-81. The larvae infested maize, sorghum, wheat, potato, soyabean, Brassica spp. and Melilotus indica. At Zhaojue, the pest produced 2-3 generations a year at an altitude of 2150 m, the fully-grown larvae overwintering in the soil at a depth of 5-10 cm. Adults emerged between 19.00 and 23.00 h. The ratio of females to males was 1.53:1. Copulation occurred within 4 days of emergence. Females laid an average of 200-500 eggs (a maximum of 1000) on the surface of the ground or on the leaves of weeds. Larvae consumed an average of 3873 m2 leaves of maize in a lifetime, with approximately 80% consumed in the 6th instar. Effective control (90%) of this pest was achieved with 80% DDVP [dichlorvos] (1:1000), 90% trichlorfon (1:100) or 25% DDT emulsion.