A new species and morphological notes on the remarkable termitophilous genus Austrospirachtha Watson from Australia (Coleoptera: Staphylinidae: Aleocharinae).

Termitophilous rove beetles in Australia encompass diverse genera and species from several tribes in Aleocharinae. While some taxa have been well-documented, others remain poorly known due to the scarcity of available material. The existing knowledge of Austrospirachtha Watson for instance, is based solely on Austrospirachtha mimetes, described from two specimens collected in an old termite mound.

A New Termitophilous Rove Beetle from Brazil Suggests an Undersampling Scenario and Cospeciation between Termites and their Termitophiles in the Neotropical region (Coleoptera: Staphylinidae: Aleocharinae).

Numerous staphylinid species can be found in termite nests. While the distributional range of termite hosts has been well studied, the same cannot be said for their associated fauna. There is a lack of comprehensive sampling even in areas where termite fauna has been well-sampled.

Dilacera, a new astonishing Amazonian genus of termitophilous rove beetle (Staphylinidae: Aleocharinae: Termitonannini) and updated checklist of the subtribe Termitonannina with their termite hosts.

The subtribe Termitonannina consists of eight genera of termitophilous rove beetles from the Neotropical region associated with termites of the subfamilies Apicotermitinae, Nasutitermitinae, Syntermitinae, and Termitinae. A new genus, Dilacera Zilberman & Pires-Silva gen. nov.

Two new species of the termitophilous rove beetle genus Xenogaster Wasmann from Brazil (Staphylinidae, Aleocharinae, Corotocini).

Xenogaster Wasmann, 1891, is a Neotropical beetle genus of termitophilous beetles, comprising ten species disjunctly distributed. During the study of specimens of the Museu de Zoologia da Universidade de São Paulo, collected during expeditions to Southeastern Brazil, two new species were discovered. Xenogaster pseudonuda sp.

Euryachen seuzei, a new genus and species of Placusini (Coleoptera: Staphylinidae: Aleocharinae) from Brazil.

The tribe Placusini (Coleoptera: Staphylinidae) consists five genera with worldwide distribution. Despite great morphological diversity, the species are easily recognized by their 4-4-5 tarsal formula and the two-articulated labial palpi, along with a broad and rounded ligula. Several synapomorphies proposed by earlier authors, both for larvae and adults, have led to the conclusion that the tribe now is considered monophyletic within Aleocharinae.

Different faces, same attitudes: behavioral mimicry and description of a new termitophilous species of the remarkable rove beetle genus Thyreoxenus (Staphylinidae, Aleocharinae, Corotocini) from Brazil with notes on post-imaginal growth.

Among the termite-associated fauna, rove beetles of the subfamily Aleocharinae are distinguished by exhibiting the majority of convergent evolutions to this lifestyle. This phenomenon known as termitophily brings many advantages, including the care of nestmates and the exploitation of resources. While some mechanisms that ensure the integration of the termitophiles into the colony are well known, such as chemical mimicry, others remain unclear.

First record of stenogastric Corotoca Schiødte (Staphylinidae, Aleocharinae, Corotocini) with notes on behavior, morphology and its phylogenetic significance.

Physogastric rove beetles are usually studied in an aspect of the physogastry concept, which is defined as the enlargement of membranous parts of abdomen. This feature along with lack of the secondary sclerotization is used to differentiate physogastric from stenogastric individuals. Charles H.