We provide a brief biography, recollections and memories of Kiyoshi Inoue, the long-time President of the International Odonatological Foundation, Societas Internationalis Odonatologica (SIO), with his complete odonatological bibliography, including editorials, for the first time.

Michael May was an odonatologist and entomologist with a long career working on thermoregulation, behaviour, and systematics. Here we share a brief outline of Mike's scientific career, a selected bibliography of his publications and warm reflections on his long, full life.

Personal recollections of Richard Rowe, a brief outline of his life and his scientific career, and his complete odonatological bibliography are presented.

The Department of Guainía, in the Colombian Amazon, has a privileged situation in terms of biodiversity, but it remained for many years as one of the least explored territories of the country. Our contribution represents the result of several years of field collecting and taxonomic work in Guainía to increase the knowledge of the odonates there. We present here the first comprehensive checklist for Guainía with 104 species reported, of which 42 are new records for the department and 14 are new records for Colombia, including the rediscovery of the genus Hylaeonympha Rácenis, 1968. The updated number of Odonata reported for Colombia is now 513 species.

There are many under-sampled sites, even Conservation Units (CUs), in the Brazilian Atlantic Forest, an important area of concern for conservation owing to its history of degradation and unique and rich biota. This study aimed to survey the fauna of Odonata in the Iguaçu National Park and the Bela Vista de Itaipu Biological Refuge, western state of Paraná, southern Brazil. The study was conducted from September 2021 to May 2022, comprising a total of 318 sampling hours. A total of 851 adult individuals of 97 species were collected in the two CUs, with 45 new records for the state of Paraná.

This study is the first check-list of Odonata from the Sempre-Vivas National Park, a rocky field formation in the Cerrado domain in the north-eastern region of Minas Gerais, south-eastern Brazil. The sampling was carried out from 2018 to 2019, totalling 20 days of sampling effort and yielding almost 700 specimens collected. A rich community of 79 species from 10 families was recorded. Three sampled species are red-listed by IUCN and one at national level. These are most likely accorded threatened status due to lack of knowledge on their populations, insufficient collecting efforts, and the failure of published data from existing natural history collections.

The final instar larva of Burmagomphus laidlawi Fraser, 1924, is described for the first time based on one larva and several exuviae collected from the Tejaswini River, Kannur district of Kerala, India. The larva is distinguished by the presence of well-developed abdominal dorsal spines on S7–9.

Description of the male Macrogomphus wynaadicus Fraser, 1924, is given based on specimens collected from different localities of the Western Ghats, India. Photographs and illustrations detailing the taxonomic characters are provided.

A new species of damselfly, Nososticta peti sp. nov., is described from Batanta Island, Indonesia. It belongs to a group of Nososticta in which the male synthorax exhibits discrete patches of blue, and the tip of the abdomen is blue. The new species differs from some of its congeners exhibiting these characters by lacking light postocular spots and lacking a transverse blue frontal bar from eye to eye. Nososticta peti sp. nov. represents the 90^th species of the genus and is currently known only from a single location on Batanta Island: Waibin River system. The distributions of Nososticta peti sp. nov. and the other species discussed herein are illustrated. Among the dragonflies collected with the new species, Diplacina cyrene Lieftinck, 1953, is new to the fauna of the Batanta Island.

Five new species of Metagrion are described from Papua New Guinea: Metagrion annehueberae sp. nov. (holotype ♂ in RMNH), Metagrion pseudolamprostoma sp. nov. (holotype ♂ in SAMA), Metagrion furcatum sp. nov. (holotype ♂ in SAMA), Metagrion lopaui sp. nov. (holotype ♂ in RMNH), Metagrion toxopeus sp. nov. (holotype ♂ in SAMA). New distribution records are provided for two poorly known Metagrion species, and a key to the mature males of Metagrion species occurring east of the Bird's Head Peninsula is given.

The name-bearing types of Anisoptera except Libellulidae preserved at the Senckenberg-Museum Frankfurt/Main (SMF), Germany are catalogued. There are 112 name-bearing types of 53 taxa within the families Aeshnidae, Gomphidae, Chlorogomphidae, Macromiidae, Synthemistidae, and Corduliidae. Of these taxa there are 47 additional paratypes and paralectotypes. The holotype female of Aeschna rufipes is missing. The holotypes of Progomphus aberrans, Progomphus virginiae, and Phyllocycla pallida as well as some paratypes of Phyllogomphoides lieftincki were stated to be deposited at the Zoological Research Museum Alexander Koenig in Bonn, Germany, but were found at the SMF. The type status of Aeshna umbrosa occidentalis, Progomphus auropictus, P. longistigma, and Macromia alleghaniensis is investigated. In addition, 67 secondary types of 28 other taxa are listed. A supplementary list of name-bearing types of Anisoptera except Libellulidae of 18 taxa described by Friedrich Ris and deposited in collections other than the SMF is provided.