Table 3 Factors affecting the (a) abundance of mites and (b) diversity of mite morphotypes present on Viburnum tinus twigs infested with Pyrrhalta viburni egg masses (Generalized Linear Model, poisson distribution, α = 0.05) during an observational study (2016). Bold values indicate significant effects.

(a) Mite abundance		df	Χ²-value	P -value
Full model		9, 90	49.77	<0.0001
Effects tested	Site	4	6.03	0.2
	Twig length (cm)	1	4.09	0.04
	Shrub infestation	2	0.91	0.63
	Number of intact egg masses	1	16.22	<0.0001
	Number of damaged egg masses	1	0.37	0.54
(b) Mite diversity		df	Χ²-value	P -value
Full model		9, 90	53.06	<0.0001
Effects tested	Site	5	8.5	0.07
	Twig length (cm)	1	0.77	0.38
	Shrub infestation	2	8.6	0.01
	Number of intact egg masses	1	28.88	<0.0001
	Number of damaged egg masses	1	1.59	0.2