This big caterpillar is on a purslane plant in a soybean field. The caterpillar is Hyles lineata, it will turn into a White-lined Sphinx Moth.
Link to White-lined Sphinx Moth:
Link to Hyles lineata:
Purslane (Portulaca oleracea) is very common in this field, it has been partially defoliated with glyphosate herbicide, but not killed completely, enough has survived to feed a caterpillar. The beans are Roundup Ready soybeans and are not affected by the glyphosate,
The field is in Tippecanoe County, in the floodplain of Wabash River. Picture taken August 3, 2009.
Link to glyphosate:
Link to previous post on purslane:
Link to previous post on soybeans:
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