**''Cimex lectularius''
**insecticide-resistant bedbug is becoming problem worldwide
==blood-sucking vectors==
*mono-directional between host and vector
**''Phthiraptera'' (lice)
**''Hemiptera'' (kissing bug)
*bi-directional between host and vector
*''Diptera'' (mosquito, fly)
*''Siphonaptera'' (flea)
*''Lepidoptera''