For most, the mere mention of lice forces an immediate hand to the head and recollection of
childhood experiences with nits, medicated shampoos, and traumatic haircuts. But for a …

Reciprocal selective effects between coevolving species are often influenced by interactions
with the broader ecological community. Community-level interactions may also influence …

Phylogenies depict the history of speciation for groups of organisms. Comparing the
phylogenies of interacting groups can reveal instances of tandem speciation, or …

Many host‐specific parasites are restricted to a limited range of host species by ecological
barriers that impede dispersal and successful establishment. In some cases …

In phylogenetic systematics, increasing attention is being placed on the model of
evolutionary change (either implicit or ex? plicit) underlying phylogenetic inferences (eg …

Cospeciation occurs when interacting groups, such as hosts and parasites, speciate in
tandem, generating congruent phylogenies. Cospeciation can be a neutral process in which …

Organisms in nature exist in complex environments where they interact with a diversity of
other species. Just as interactions between species are fundamental to ecological studies …

Phylogenetic congruence is governed by various macroevolutionary events, including
cospeciation, host switching, sorting, duplication, and failure to speciate. The relative …

“The student who intends working on the Mallophaga should take warning that he will be
tried almost beyond endurance by the paradoxes and complexities which beset his subject …

Documentation of widespread cospeciation in a host-parasite assemblage requires
statistical evidence that the congruence observed between the host and parasite …