There is controversy whether the family Lygaeidae in the wider sense
should be split into
several smaller families.
Henry (1997) has
performed a phylogenetic analysis based on a number of morphological
characters, and published a
cladogram that renders the Lygaeidae (as it is traditionally defined)
paraphyletic, at least if one wants
to retain the taxa Berytidae and Piesmatidae at the family level.
Therefore, he proposed
a novel classification for the Lygaeoidea: he restricted the Lygaeidae
to the former subfamily Lygaeinae
and elevated a number of former Lygaeidae subfamilies to family level.
This new classification was widely
adopted by heteropterologists, only in Germany and a few western
European countries heteropterologists
were more reluctant to adopt the new system. Unfortunately, no comprehensive modern phylogeny of the
Lygaeoidea has been published yet.
However, a number of Lygaeoidea representatives have been included in
phylogenetic studies of larger taxonomic
units of the Heteroptera (
Li et al. 2005;
Li et al. 2006;
Yuan et al. 2015;
Yuan et al. 2015;
Li et al. 2016;
Li et al. 2016;
Zhao et al. 2018). Strikingly, all these studies do not
support the phylogeny proposed by
Henry (1997).
Especially the position of the Berytidae as the last branch of the clade that would have rendered the
Lygaeidae paraphyletic in their classical sense, is not supported. Thus,
a comprehensive phylogenetic analysis of the Lygaeoidea that also
includes molecular data is urgently needed to arrive at a stable
classification of this group of heteropterans. In the meantime, the
cladogram published by
Henry (1997) is not a suitable basis for a
classification system, and therefore I do not adopt it here.