Discontent about changes in species classifications has grown in recent years. Many of
these changes are seen as arbitrary, stemming from unjustified conceptual and …

Mitonuclear discordance across taxa is increasingly recognized as posing a major
challenge to species delimitation based on DNA sequence data. Integrative taxonomy has …

The study of genetic exchange resulting from natural hybridization, horizontal gene transfer,
and viral recombination has long been marked by controversy between researchers holding …

Discovery of cryptic species using molecular tools has become common in many animal
groups but it is rarely accompanied by morphological revision, creating ongoing problems in …

Seed harvesting ants are ecosystem engineers that shape vegetation, nutrient cycles, and
microclimate. Progress in ecological research is, however, slowed down by poor species …

Paracercion are common 'blue and black'colored damselflies. We explore the species
boundaries of Paracercion (Odonata: Coenagrionidae) using ABGD, bPTP, GMYC and …

Premise Hybridization is recognized as an important mechanism in fern speciation, with
many allopolyploids known among congeners, as well as evidence of ancient genome …

Next generation sequencing has revolutionised biology. Restriction-associated DNA
sequencing (RADseq) has primarily been used to study infraspecific relationships but has …

Integrative taxonomy (IT) is becoming a preferred approach to delimiting species boundaries
by including different empirical criteria. IT methods can be divided into two types of …

Although resolving phylogenetic relationships and establishing species limits are primary
goals of systematics, these tasks remain challenging at both conceptual and analytical …