The migratory locusts have perhaps been the most important agricultural pest in China since the earliest historical time. Traditionally, locust populations in China have been classified into three subspecies based mostly on morphological differences, viz: the oriental migratory locust (Locusta migratoria manilensis), the Asiatic migratory locust (Locusta migratoria migratoria) and the Tibetan migratory locust (Locusta migratoria tibetensis) . Morphological characters (as well as other characters ...