Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Yellow striped armyworm, (life cycle)

Spodoptera ornithogalli, (Guenée, 1852)


It is a life cycle of a very common species in Texas. The eggs are small and yellow but will turn black when it is about to hatch. The 2nd instar as shown is black with two white lines running down both sides of the caterpillar. The fourth instar is the same as the 2nd instar but much larger. the 5th instar is also black but has light blue and black triangles running down both sides of the body. The cocoon stage is bright red and 15 mm. long. The adult has many patterns and is silver to the look.


Sub-urban, Fort Worth, Texas.


These specimens were found feeding on Bell pepper and Amaranth leaves. They can also feed on alfalfa, asparagus, bean, beet, cabbage, clover, corn, cotton, cucumber, hops, grape, grass, jimsonweed, morning glory, onion, pea, peach, peanut, sweet potato, swiss chard, tobacco, tomato, turnip, wheat, watermelon, wild onion. Their distribution is from North America to Argentina.

Species ID Suggestions

Sign in to suggest organism ID


Ornithoptera80 5 months ago

Thank you Tukup, sure dose.

Tukup 5 months ago

The thumbnail looked like Abby's fingernails from NCIS 😄. Thanks for sharing Ornithoptera.

Spotted by

Fort Worth, Texas, United States

Spotted on Jul 9, 2020
Submitted on Jul 13, 2020

Related Spottings

Oriental leafworm moth yellow-striped armyworm Oriental Leafworm Moth Cotton Cutworm

Nearby Spottings

Fiery skipper Red-tailed flesh fly, (mating) Unicorn caterpillar moth Carolina Anole
Noah Guardians
Noah Sponsors