Table 1.

Synthetic host fruit volatile blends. Shown are the proportions of behaviourally active compounds comprising apple (Malus pumila) and different hawthorn species blends, including those for downy hawthorn (Crataegus mollis), blueberry hawthorn (C. brachyacantha), green hawthorn (C. viridis), eastern mayhaw (C. aestivalis), western mayhaw (C. opaca), hybrid mayhaw (C. rufula) and southern red hawthorn (C. mollis var. texana). Data were compiled from [13,15,16,30–32].

volatile	downy haw	apple	green haw	blueberry haw	eastern mayhaw	western mayhaw	hybrid mayhaw	southern red haw
butyl butyrate		10	19.5	9	12	6	5	45
propyl hexanoate		4	1.5		1	6	1	0.3
butyl hexanoate	0.01	37	24	16.8	25	26	23	20
hexyl butyrate		44	24	16.8	9	12	6	14
pentyl hexanoate		5	2.5		2		3	0.6
3-methyl-1-butanol	4		5	0.6	2	44	1	0.4
butyl acetate				50	47		57	9
pentyl acetate				3.5	2	6
isoamyl acetate	1.5						3
isoamyl butyrate								1.5
isoamyl hexanoate								0.5
ethyl acetate	94.3
dmnt	0.07		20.5
di-hydro-beta-ionone	0.1							0.2
1-octen-3-ol			0.5	0.3
hexyl propionate							1
butyl propionate								5.5