Antifeedant activity of gutta-percha against larvae of the Hyphantria cunea and Anoplophora glabripennis

Figures & data

Figure A1. Analysis of artificial diet consumption by A. glabripennis larvae when diet contained 0−9% gutta-percha.

Figure A2. Analysis of E. ulmoides larval length after eating artificial diet containing 0−6% gutta-percha.

Table A1. Classification of pest feeding and damage on E. ulmoides trees.

Classification	Pest emergence or defecation holes	Leaves with symptoms of pest feeding (%)
Class 1	0	0
Class 2	1–5	1−50
Class 3	>5	>50

Table A2. The investigation on pests feeding traces of E. ulmoides in Beijing urban areas.

Tree species	Plot number	Average tree height (m)	Average tree diameter (cm)	Class 1*	Class 2*	Class 3*	Insect resistant (%)	Affected tissue
E. ulmoides	1	11.5	24.1	30	0	0	100.0
	2	8.9	21.1	28	2	0	93.3	Leaf
	3	8.7	20.5	29	1	0	96.7	Leaf
	4	6.7	16.6	27	3	0	90.0	Leaf trunk
	5	6.3	15.4	26	3	1	86.7	Leaf

*Class 1, 2, and 3 are defined in Table A1.

Table A3. Analysis of artificial diet consumption by larvae after treating diet surfaces with gutta-percha.

Tested insects	Method of treatment with gutta-percha	Average per cent of unconsumed diet
Third-instar Hyphantria cunea	Surface	95.6^a
	Interlayer	81.3^b
	CK	0^c
Third-instar A. glabripennis	Surface	96.7^a
	Interlayer	73.3^b
	CK	13.3^c

Note: Different letters indicate statistically significant differences at the 5% level.