Results
A total of 4847 specimens of 105 chafer species belonging to Rutelinae,
Melolonthinae, and Dynastinae were recorded (Table S2). Species richness
estimators suggested >89% of total species inventory had
been captured. While 82% of the individual locality assemblages showed
more than 84% of sampling completeness (in terms of species
composition), in two cases sampling completeness was, with less than
50%, quite low (L9, L14) (Table S3). Species accumulation curves for
individual localities showed that about 80% of its species have been
captured in less than half of the total trapping events (before
34th trapping event) (Figure S2). Similarly, species
accumulation curves for individual traps showed that about 80% or
slightly more of the expected species has been captured before half of
the total trapping events.
Melolonthinae was the most speciose subfamily (n=79), with the highest
number of recorded individuals (n=2504). Dynastinae had the lowest
number of species (n=8) and individuals (n=38). For Rutelinae we
recorded 18 species in 531 exemplars. Among the Melolonthinae, Sericini
was the most speciose tribe accounting 44.7% of all species (Figure 1).
Many species were geographically restricted, 67 species out of 105 (64%
of total assemblage) were found exclusively at just one site. L3 showed
the highest alpha diversity and L13 the lowest (Table S3). These
patterns are also reflected by the results of the two-way cluster
analysis, one for the species occurring in different localities, and
another for the different localities in which certain species are
present (Figure 2) which linked faunal similarity with similar species
occurrence patterns.