To some extent classification is subjective. Taxonomists differ in the relative importance they ascribe to particular characters and in the degree of difference between related taxa they deem ...

Stoneflies (order Plecoptera) rank among the most ancient lineages of winged insects. Beyond their role as key bioindicators ...

New World Genus Perilypus is redefined, and its natural history summarized. Species occur in at least three macrohabitats defined as oak, liana, and herbaceous assemblages. Beetles with rectangular ...