Table 3. Comparison of color distribution among caterpillars fed willow vs. birch leaves A) raised in total darkness, or B) raised in clear containers but fed shredded leaves suspended on clear polyethylene nets.

Treatment		Color Score				G-statistic	P
		A	B	C	D
A	Willow-fed	93	46	14	2	66.39	<0.001
	Birch-fed	11	22	38	4
B	Willow-fed	0	9	36	16	9.79	0.008
	Birch-fed	0	6	41	47

Scoring was as in Table 1.