Family Reduviidae shine rarrabuwa taxonomic don rukunin kwari wanda akafi sani da kwari masu kisan kai. Wadannan ƙwarin suna da yawa kuma suna da tsayin daka, kunkuntar jikinsu da dogayen ƙafafu. Ana samun su a duk duniya, tare da nau'o'in nau'i da yawa da ke zaune a wurare masu zafi. Sunan "bug assassin" yana nufin iyawarsu ta kama wasu kwari, waɗanda suke kashewa da kaifi, mai lanƙwasa proboscis da suke amfani da su don allurar dafin. Wasu nau'in kwari masu kisa na iya zama kwari na amfanin gona ko kuma yada cututtuka ga mutane da dabbobi.