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Photo#8840
Clouded Sulphur Caterpillar - Colias philodice

Clouded Sulphur Caterpillar - Colias philodice
Eastern, Oklahoma, USA
December 1, 2004
Colias philodice

Hmm,
Oklahoma is very much south of the published range for Colias interior (see Nearctica map, so I suspect it must be another species. Coleas philodice is described as having a white lateral band with a rosy line through it by Scott (1). I haven't tracked down an image though.

 
Green Caterpillar
As Patrick would say I stand in orthopedic shoes.
I can only find a picture in the golden guide for C. philodice and it is not detailed enough to show the pink line in the white.
Thanks Hannah, I will continue to look.

 
Wagner, page 88
shows C. philodice with white stripe with pink bars, but says "Caterpillars of C. eurytheme are similar -- you must rear them to adulthood to confirm their identity. The two fly together throughout the East, share the same foodplants, and occasionally hybridize." He does point to a food plant preference between the two with clover vs alfalfa if that helps.
Opler and Krizek mention the possibility of broken red strips in the lateral white stripe for philodice, but make no mention of it for eurytheme.
We're leaning toward philodice.

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