This paper reports on four new species of the millipede genus Apeuthes from SE Asia based morphological and mitochondrial DNA sequence data. The analyses cast doubt on the current interpretation of Apeuthes, but provide new support for the monophyly of Trigoniulinae. The present discoveries reveal that the family Pachybolidae is far more diverse in SE Asia than was hitherto appreciated. The study makes the pachybolids more known and accessible for biodiversity and evolution research.

A modern systematic revision of the subterranean amphipod genus Nedsia is presented. Using molecular and morphological analyses, and distributional data to determine species, we describe 13 new species, confirm three existing species and synonymise eight previously described species. The research provides an accelerated pathway for future taxonomic work and the basis for future environmental impact assessments involving Nedsia species.