Species Details

Helicoverpa zea

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameCorn Earworm, Tomato Fruitworm, Bollworm SeasonalityAdults are on the wing in late August - September. IdentificationA 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.

Scientific Name Helicoverpa zea Common Name Corn Earworm, Tomato Fruitworm, Bollworm Habitat Ubiquitous in open areas, esp. in croplands. Seasonality Adults are on the wing in late August - September. Identification
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…
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…
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.
Conservation 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. Range 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.

Citation

Page Citation for Helicoverpa zea

Page Citation

"Helicoverpa zea, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-271. Accessed 21 May. 2022.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Noctuidae Subfamily Heliothentinae Genus Helicoverpa Species Helicoverpa zea
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum