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Assassin Bug


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Common names: Assassin Bug, Giant Wheel Bug, Wheel Bug

Scientific name: Order Heteroptera, family Reduviidae, many species

Size: Adult--3/8" to 1 5/8"

Identification: Various colors and sizes, look like skinny stink bugs or leaf-footed bugs. Abdomen often flares out beneath the wings. Head is elongate with a groove between the eyes. Short curved rostrum (swordlike snout) fits in groove under body. Strong front legs to hold prey. Adults can give you a painful bite if handled but rarely do.  

This is a form of assassin bug called the giant wheel bug.

                                    Photo courtesty of Robert Forsbach

Biology and life cycle:
Eggs usually laid singly or in clusters on branches, in crevices, and under stones and the like. Nymphs are often brightly colored. Incomplete life cycle--with normally one generation per season. Will hibernate in all life forms--eggs, nymphs, and adults.

Habitat: Many ornamental and food crops.

Feeding habits: Eat adults, nymphs, and larvae of many plant-eating insects. Like to eat troublesome insects from mosquitoes to large beetles. Favorite foods include aphids, leafhoppers, beetle larvae, caterpillars, and small flying insects.

Economic importance: Control many troublesome plant-eating insects.

Natural control: Spiders and themselves. The young feed on each other.

Organic control: None needed, highly beneficial.

Insight: Assassin bugs in the genus Triatoma, called kissing bugs, bite people at night. They are blood feeders. See Kissing Bug.

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