Taxonomy and Phylogeny of the Aphid Genus Matsumura, 1917, with Synonymy of the Mysterious Shinji, 1924 (Hemiptera: Aphididae: Lachninae).

Matsumura, 1917 is a small aphid genus from the tribe Tuberolachnini (Hemiptera: Lachninae) occurring in Southeast Asia. Species from this genus are quite characteristic and stand out among lachnids for their morphology and ecological associations. We have performed a revision and phylogenetic analyses to elucidate the relationships within and other representatives of Tuberolachnini.

A new species of the genus Paulianidia Jarrige and a new combination in Pseudolathra Casey (Coleoptera, Staphylinidae, Paederinae).

The genus Paulianidia (Coleoptera, Staphylinidae, Paederinae) was described by Jarrige, 1978 and thus far, it consists of 24 species. It is endemic to Madagascar and has been sampled in the leaf litter layer of soil in mountainous regions with little sign of degradation. Here, we describe a new species in the genus, Paulianidia parahammondi sp.

The oldest case of paedomorphosis in rove beetles and description of a new genus of Paederinae from Cretaceous amber (Coleoptera: Staphylinidae).

The ecology of extinct species from the Cretaceous is largely unknown. Morphological features of specimens preserved in amber can help to reveal habitats and evolutionary strategies that occurred in fossil lineages. An unusually small rove beetle (Staphylinidae) from the subfamily Paederinae with a Y-shaped suture on the head and modified tarsi and antennae is newly described here as Midinudon juvenis Tokareva & Żyła gen.