Milkweed assassin bug

Description

Zelus longipes is an assassin bug (Reduviidae) that is a member of the Harpactorinae subfamily. Its distribution ranges include southern North America, Central America, and South America (except Chile), especially in agroecosystems in Brazil. Zelus longipes has been considered as a potential biocontrol agent, as it prefers caterpillars of Spodoptera frugiperda, which is a moth that is a pest in cornfields. The species is a generalist predator, commonly used to combat picture-winged flies (Diptera: Ulidiidae), which cause damage to sweet corn yields in Florida. Z. longipes prefers smaller caterpillars, probably because there is less risk of injury while subduing smaller prey. Zelus is a genus of insects in the family Reduviidae, the assassin bugs. There are currently 60 described species; most occur in Central and South America, and five are found in North America. Some species have been investigated for their potential as biocontrol agents in integrated pest management. Zelus is also known for a sticky trap predation strategy. Sticky resin produced from a leg gland is smeared on hairs to aid in prey capture. This is somewhat analogous to the carnivorous plant sundew.