Table 1 Woody species referred for comparison with Japanese lilac and the number of specimens tested in the previous studies

Fraxinus lanuginosa (Japanese ash)

5

22

Muto and Koizumi [9]

Phellodendron amurense (Amur cork tree)

1

2

Koizumi et al. [10]

Kalopanax pictus (Castor aralia)

1

3

Koizumi et al. [10]

Ulmus davidiana var. japonica (elm)

6

27

Koizumi et al. [10]

Acer mono (maple)

1

6

Koizumi et al. [10]

Salix hultenii var. angustifolia (willow)

1

4

Koizumi et al. [10]

Tilia japonica (lime tree)

1

6

Koizumi et al. [10]

Sorbus commixta (mountain ash)

1

11

Koizumi et al. [10]

Alnus japonica (alder)

2

20

Koizumi et al. [10]