Appendix 1. Names of the forest hoverfly species retained to calculate the species richness variable.
Frequency of occurrence indicates the number of woodlands where the species was present.
Names
Frequency of occurrence
in woodlands
Ferdinandea cuprea (Scopoli), 1763
23
Brachypalpus laphriformis (Fallen), 1816
20
Brachypalpoides lentus (Meigen), 1822
44
Brachyopa scutellaris Robineau-Desvoidy, 1843
3
Cheilosia scutellata (Fallen), 1817
19
Caliprobola speciosa (Rossi), 1790
53
Criorhina floccosa (Meigen), 1822
10
Xanthandrus comtus (Harris), 1780
15
Criorhina berberina (Fabricius), 1805
38
Dasysyrphus venustus (Meigen), 1822
4
Xanthogramma laetum (Fabricius), 1794
16
Xylota tarda Meigen, 1822
7
Epistrophe melanostoma (Zetterstedt), 1843
9
Criorhina asilica (Fallen), 1816
18
Milesia crabroniformis (Fabricius), 1775
11
Cheilosia soror (Zetterstedt), 1843
1
Xylota sylvarum (L.), 1758
11
Pipiza sp
6
Temnostoma meridionale Krivosheina & Mamayev, 1962
19
Myolepta vara (Panzer), 1798
1
Brachyopa bicolor (Fallen), 1817
1
Psilota anthracina Meigen, 1822
1
Pipiza luteitarsis Zetterstedt, 1843
6
Doros destillatorius Mik, 1885
1
Brachyopa pilosa Collin, 1939
2
Ceriana conopsoides (L.), 1758
1
Criorhina pachymera (Egger), 1858
1
Appendix 2. Species rarefaction curves estimated for each woodland having more than one trap (i.e.
with an area > 5ha, n=19). These curves show the average pooled species richness of forest hoverfly
specialists when all traps per woodland are combined by randomly sampling traps with 100
permutations.
10
0
5
random
15
20
Species Richness
0
2
4
6
8
10
Sites
12
14
Pooled traps
Appendix 3. Relationships between current average number of microhabitats per woodland
(AvgNb_MH) and species richness of forest hoverflies for each historical continuity category (i.e.
since 1850 = 1; since 1900 = 2; since 1954 = 3; since 1979 = 4)