Upon examination of recently collected epipsocid barklice from natural areas Colombia, five new species Neurostigma Enderlein, 1900 were found: N. lienhardi sp. nov., mockfordi newi thorntoni and valderramae nov. They are here described illustrated. A cladistic analysis 32 morphological characters indicates that is monophyletic. An updated key for the identification males genus presented.

This symposium brings together seven systematic biologists to discuss the relationship between phylogenetic systematics (cladistics) and various branches of comparative biology. Cladistic theory and method were not the focus of this symposium, but rather it addressed how the results of cladistics-that is, hypotheses about phylogenetic pattern-are an essential component of historical analysis. T...

Salamander populations of the Plethodon jordani species complex form a challenging system for applying the general lineage concept of species to diagnose population-level lineages. The present study reports and analyses mitochondrial-DNA haplotypes ( ∼ 1200 nucleotide bases from the genes encoding ND2, tRNA Trp , and tRNA Ala from 438 salamanders) from 100 populations representing six species o...