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Eastern Boxelder Bug

Boisea trivittata


Found in the driveway and all over the Oak Tree. A North American species of true bug, commonly known as the box elder bug, the zug, or maple bug. It is found primarily on boxelder trees, as well as maple and ash trees. The adults are about 12.5 millimetres (0.49 in) long with a dark brown or black coloration, relieved by red wing veins and markings on the abdomen; nymphs are bright red.


Deciduous and mixed forests, meadows. Range-southern Canada (ON-AB) and most of the US east of the Rockies (west to ID-AZ) to Guatemala. Eggs are laid in bark crevices or on foliage/seeds of host. Nymphs molt five times before reaching adulthood. Adult females overwinter, and are sometimes an annoyance as they invade houses in late fall. 1-2 generations per year.


Latin trivittatus 'three-striped' (refers to the stripes on the pronotum)

1 Species ID Suggestions

Aaron_G 11 years ago
Eastern boxelder bug
Boisea trivittata Eastern boxelder bug

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isabellasmurf 11 years ago

Updated spotting info.

isabellasmurf 11 years ago

Thank you for the ID assist Aaron_G.

Spotted by

Centennial, Colorado, USA

Spotted on May 23, 2012
Submitted on Oct 1, 2012

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