Types of selected species of Lygaeoidea (Hemiptera: Heteroptera) described by Gustav Breddin, so far of unknown depository, were re-examined and the taxonomic and nomenclatural problems that existed among those species are discussed and resolved as required. The holotype of Dieuches schultheissi Breddin, 1906 is documented. Lectotypes are designated and documented for the following taxa: Lygaei...

Mating failure, characterized by the lack of production of offspring following copulation, is relatively common across taxa yet is little understood. It is unclear whether mating failures are stochastic occurrences between incompatible mating partners or represent a persistent, meaningful phenotype on the part of one or other sex. Here we test this in the seed bug Lygaeus simulans, by sequentia...