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Thessalia leanira alma Fourth Instar

Larva collected 13 Apr 2010 in the Little Drum Mountains, Juab County, Utah on Castilleja chromosa.

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Thessalia leanira alma Fifth Instar Caterpillar

I located this larva on Saturday, April 10, 2010 in the House Range on Castilleja chromosa.  Photo courtesy Wayne Whaley.

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