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Tiger Moth: Grammia geneura
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At first glance, this moth looks exactly like the Mexican Tiger moth, Grammia proxima, however this closely related species has its differences. The males of this species also have red hindwings with black spots, like the females. The pictures on this page come from caterpillars found mid-March in Southeastern Arizona. They are quite noticeable when they cross the road. They likely were hibernating through the winter and have reawakened to seek food and then transform into moths. The captured caterpillars were fed salad greens. The adults were later released, but not before two females had released about 200 eggs in total. Hatchlings from these eggs were then observed. The males are active flyers while the big, heavy females had a difficult time flying.

ID: possible Grammia geneura or G. nevadensis (or even G. nevadensis geneura) [http://bugguide.net/node/view/131677].


Common name: Dozens of eggs
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/18/2004
Location:Tucson, Pima Co., AZ
Tiger Moth caterpillar
One female can carry a hundred or more. They are laid in loose piles on the ground.

Common name: Eggs seen through handheld 30x microscope
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/18/2004
Location:Tucson, Pima Co., AZ
Tiger Moth caterpillar
Comment:

Common name: Dozens of hatchlings, about one week after being laid
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth caterpillar
The eggshells were eaten, the caterpillars' first meal

Common name: Closeup of hatchlings literally standing on their hairs
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/25/2004
Location:Tucson, Pima Co., AZ
Tiger Moth caterpillar
Comment:

Common name: Hatchling seen through handheld 30x microscope
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth caterpillar
Comment:

insert new stuff here
Common name: Pupa, soon after molting, old skin at left
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:4/30/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
The caterpillar safely and securely webs itself up in leaves and
debris while it transforms into a moth.

Common name: Pupa. Head is at right, old caterpillar skin still attached
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:4/28/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
Comment:

Common name: Adult female with red hindwings partially showing
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
Note large abdomen, filled with eggs ready to lay

Common name: Adult male with red hindwings partially showing
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
Comment:

Common name: Adult male
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
Comment:

Common name: Adult female
Class:Insecta
Order:Lepidoptera
Family:Arctiidae
Sub-family:Arctiinae
Genus:Grammia
Species:Grammia geneura
Date:5/24/2004
Location:Tucson, Pima Co., AZ
Tiger Moth
Comment:

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All photos ©2009 Colin L. Miller, all rights reserved.