出典:Wiktionary
出典:『Wiktionary』 (2026/01/01 22:50 UTC 版)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/15 18:25 UTC 版)
The Beet Armyworm or Small Mottled Willow Moth (Spodoptera exigua) is one of the best-known agricultural pest insects. It is also known as the asparagus fern caterpillar, and the adult moth is known in the UK (where it is an immigrant and not known to breed) as the small mottled willow. It is native to Asia, but has been introduced worldwide and is now found almost anywhere its many host crops are grown. The voracious larvae are the main culprits. They are greenish-brown cutworms, soft and bulging caterpillars with dark longitudinal stripes. The adult is a drab brown or gray moth 2 to 3 cm in wingspan.