Subject: caterpillar on fireweed at 9200’
Location: Front Range of Colorado, near Boulder, 9200 feet altitude
August 16, 2012 8:07 am
Found this caterpillar on some fireweed in my front yard.
Signature: Karelle

Bedstraw Hawkmoth Caterpillar

Dear Karelle,
This is the caterpillar of the Bedstraw Hawkmoth or Gallium Sphinx,
Hyles gallii.  You may read all about the life cycle of the Bedstraw Hawkmoth as well as its food plant, fireweed, on the  Sphingidae of the Americas website.  There are several different color variations for the caterpillar in addition to the olive color you have submitted.  Other colors include black and green.  Since a family matter requires that we be away from the office this weekend, we are postdating this submission to go live on Friday during our absence.

Thanks Daniel for your prompt and informative reply. I’ve seen the moth here, so I’m glad to recognize the caterpillar stage too.

Location: Colorado

2 Responses to Bedstraw Hawkmoth Caterpillar

  1. Sandy Negaard says:

    My son brought one home. What does it eat?

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