Entomology Collection TitleImage Bugs Pinned
Species Page - Helicoverpa zea
species list search results ->Helicoverpa zea ->species page

E-mail this Page   
Print this Page   
Link to this Page   

scientific name    Helicoverpa zea    

common name     Corn Earworm, Tomato Fruitworm, Bollworm

Ubiquitous in open areas, esp. in croplands.

Adults are on the wing in late August - September.

A medium-size (3.5-4.5 cm. wingspan) olive-green (males) or olive-brown brown (females) moth. The orbicular is faint and round with a dark pupil, the reniform more prominent and darker. Normal lines are marked by a series of dark dots, and the forewing terminal area is lighter than the remainder of the wing. Hindwings are white with a discal crescent and a wide dark terminal band containing a small pale patch midway along the margin. The green color of the male fades in older museum specimens.

life history
A very widespread pest species on a wide range of crops. Alberta lies at the northern edge of it's huge range, and there are only a handful of records from southern Alberta. It occurs in Alberta only as a fall immigrant from the south. Adults are mainly nocturnal and come to light. Like other members of the family, the larvae feed mainly on the buds, flowers and developing fruiting bodies of plants, including corn ears, tomatoes, and other vegetable crops.

None. Elsewhere a major agricultural pest.

diet info
No Alberta data. Elsewhere a vast number of wild and cultivated plants. As the common names imply, a pest on corn, tomatoes and cotton.

Across southern Canada from Nova Scotia to BC, south to Argentina and Chile. In Alberta, recorded as an immigrant north to Dry Island Buffalo Jump Provincial Park in the Red Deer River valley.

quick link

Comments (0)Add New Comment

Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.

Add New Comment (all fields are required)

Related Species Info
Display Hierarchy
References (2)
Specimen Info
There are 27 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (27)
Related Links
Moth Photographers Group


Logo Department of Museums and Collections ServicesLogo University of Alberta