A revision ofHaematodesLaporte andWeiserianumBernhauer (Coleoptera: Staphylinidae: Staphylininae: Xanthopygina)

Abstract

The species of poorly known but charismatic generaHaematodesLaporte, 1835 andWeiserianumBernhauer, 1927 are revised.Weiserianumsyn. nov.is considered a junior synonym ofHaematodes, withHaematodes kuntzeni(Scheerpeltz, 1936)comb. nov.Weiserianum woltersiBernhauer, 1927syn. nov.is treated as a synonym ofHaematodes tenuipesKraatz, 1858.Haematodes myterossp. nov., is described from Paraguay and Brazil. As the type series ofHaematodes bicolorLaporte, 1835 is considered lost, a neotype, selected from the original type locality is designated. We also designate a lectotype forH. tenuipesKraatz, 1858 to stabilize nomenclature for this species, which is similar toH. myteros. As far as known,Haematodesis restricted to the southern Neotropical region and may be nest parasites withinAcromyrmexandAttaant nests as are species of the related genusScariphaeus, but no direct observations are yet available. We provide a key to the four known species ofHaematodesand illustrate their diagnostic features.