Moth Family Geometridae (Inchworms)

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Lepidoptera (Moths)

» Family Geometridae (Inchworms)

Common Names

Match	Common Name
	Inchworms
	Green Worms

Pictures Below ↓

These terrestrial (Terrestrial: Insects which live on land and are fed on by trout only when they incidentally fall into the water are known as "terrestrials" to fly anglers, and they're very important in late summer.) moths are sometimes taken by trout when their larvae, the well-known inchworms, dangle by their little silken threads in especially high numbers around June. They may be abundant enough throughout the forest that plenty dangle their way into the water.

Where & When

Regions: East, Midwest, West
Time Of Year (?): Late spring or early summer

1 Moth Specimen in the Family Geometridae:

Geometridae (Inchworms) Moth Larva

View 6 PicturesI caught this inchworm lowering itself to the surface of a trout stream from its silk thread. I saw a couple others floating on the surface, so it's likely the trout were familiar with them.

Region: Poconos

Collected May 29, 2007

Added Jun 4, 2007

1 Streamside Picture of Geometridae Moths:

View Full Size (2.7X larger)

In this picture: Moth Family Geometridae (Inchworms).

RegionUpper Midwest

Date TakenJun 7, 2006

Date AddedJun 30, 2006

CameraCanon EOS 20D

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Jargon Defined:

Larvae: Many classes of aquatic insects, such as caddisflies, midges, craneflies, dobsonflies, alderflies, and many more, are known as "larvae" rather than "nymphs" in their juvenile stages. They have mostly soft bodies rather than hard exoskeletons. These insects also advance through a "pupa" stage before reaching adulthood.

Terrestrial: Insects which live on land and are fed on by trout only when they incidentally fall into the water are known as "terrestrials" to fly anglers, and they're very important in late summer.

Useful References:

Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.

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