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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Butterflies and Moths (Lepidoptera) » Moths » Noctuoidea
Photo#258416
Cocoons/pupae on oak
Copyright © 2009 Debbi Brusco

Cocoons/pupae on oak
Stanford, Santa Clara County, California, USA
March 4, 2009
Size: about 1cm
There were many of these cocoons on an oak. Some had exit holes. One group of cocoons had (presumably) other insects around them, including what looked like a cicada exuvia.
The approximate size is of the pupa, the cocoons are larger.

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Cocoons/pupae on oak Cocoons/pupae on oak Cocoons/pupae on oak
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Contributed by Debbi Brusco on 14 March, 2009 - 8:44pm
Last updated 23 April, 2009 - 7:45pm

Possibly Orgyria vetusta - Western Tussock Moth
... the cocoons and pupa look like typical Tussock Moth material. They can be pretty dense on Coast Live Oak.
… Bob Patterson, 14 March, 2009 - 11:34pm login or register to post comments

 
Good call!
The hairs incorporated into the cocoon silk had me thinking tussock moth, too.
… Eric R. Eaton, 14 March, 2009 - 11:39pm login or register to post comments

 
I thought so too, but...
1 cm? So very small! Are western tussock moths much smaller than white-marked etc.?
… Charley Eiseman, 14 March, 2009 - 11:41pm login or register to post comments

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