housefly

jumping spider (family Salticidae)

fly larva; maggot

myiasis

(lit.) to swarm like flies around rotten food and drag out an ignoble existence like a dog (idiom); (fig.) to lead an undignified life; to resort to any means for personal gain

housefly; CL:隻|只[zhi1]

house fly

fruit fly

see 無頭蒼蠅|无头苍蝇[wu2 tou2 cang1 ying5]

headless fly (a metaphor for sb who is rushing around frantically)