钻心虫

zuān xīn chóng

boring insect

snout moth's larva (Aphomia gullaris or Plodia interpuncuella or Heliothus armigera etc), major agricultural pest

钻

zuān

to drill

心

xīn

heart

虫

chóng

lower form of animal life, including insects, insect larvae, worms and similar creatures