Description of gen. et sp. nov. from Venezuela (Coleoptera, Adephaga, Dytiscidae, Cybistrinae).

A new genus, , is described for a unique new species, , from Venezuela. This paper corrects an inadvertent mistake in a paper by the authors (Miller et al. 2024) in which the collection of deposition of the holotype of the species was not indicated making the new species unavailable which, therefore, made the new genus unavailable.

The Collapsible Light Trap: a portable Pennsylvania Light Trap for collecting aquatic insects.

A Collapsible Light Trap (CLT) for collecting insects, particularly aquatic insects, is described here. CLT is a modified Pennsylvania Light Trap with the advantage of being collapsible and lightweight to be carried in a small backpack and very easy to set up in the field. CLT is equipped with LED light strip wrapped around a PVC tube and can be connected to a regular 12 V / 7 Ah battery, running for more than 48 uninterrupted hours.

Reclassification of Cybistrinae Sharp, 1880 in the Neotropical Region (Coleoptera, Adephaga, Dytiscidae), with description of new taxa.

The classification of the Neotropical Cybistrinae Sharp, 1880 (Coleoptera: Adephaga: Dytiscidae) is extensively revised based on a phylogenetic analysis of morphological features of the group. A new genus, is described for a unique new species, from Venezuela. The New World genus, Sharp, 1882, with several subgenera, was found to not be monophyletic.

Two new species and new records of Notomicrus Sharp, 1882 (Coleoptera: Noteridae) from Brazil.

Two new species of Notomicrus Sharp, 1882 from Brazil are described and illustrated: N. meizon sp. nov.

On Hydrocanthus Say, 1823 (Coleoptera: Noteridae): description of a new species, two new synonyms and a key to Brazilian species.

A new species of Hydrocanthus Say, 1823 is described and illustrated, H. zimmermanni sp. nov.

Five new species of Ytu Reichardt (Coleoptera: Myxophaga: Torridincolidae) and new records from Brazil.

The genus Ytu Reichardt is the most diverse within Torridincolidae, currently with 19 species. Five new species are described herein, four of them from various localities in the southeast of Brazil (type localities in parentheses): Ytu hermes sp. nov.

A new species and new records of Oocyclus Sharp, 1882 (Coleoptera: Hydrophilidae) from Brazil.

A new species of Oocyclus Sharp, 1882, O. pilosus sp. nov.

Laccomimus xikrin sp. nov. and new records of other species of Laccomimus Toledo & Michat, 2015 (Coleoptera: Dytiscidae: Laccophilinae) from Brazil.

The genus Laccomimus Toledo & Michat, 2015 was recently erected for small drop-shape Dytiscidae beetles commonly found in Tropical South America associated with lentic waters. In the present paper a new species, Laccomimus xikrin sp. nov.

On Brazilian Helobata Bergroth, 1888 (Coleoptera: Hydrophilidae): description of two new species, new records, and key to species.

Two new species of Helobata Bergroth, 1888 (Hydrophilidae: Acidocerinae) from Brazil are described and illustrated. Helobata amazonensis sp. nov.

Vatellini Sharp (Coleoptera, Dytiscidae) from Brazil: two new species, new records, and a checklist.

The tribe Vatellini Sharp, 1882 is composed of 55 species divided in two genera. Even though a recent revision of the tribe was made, Vatellini of the new world are weakly explored with great gaps in the distributions of species. In Brazil the knowledge is based only on a few localities.

New species and new records of Xenelmis Hinton (Coleoptera: Elmidae) from Southeastern Brazil.

The genus Xenelmis is found in the Nearctic and Neotropical regions. Currently, seven out of thirteen species are registered from Brazil. Here, two new species of Xenelmis from Brazil are described and illustraded-Xenelmis sinecarina sp.

Two new species and new records of Liocanthydrus Guignot (Coleoptera, Noteridae) from Brazil.

Two new species of Liocanthydrus Guignot, L. zanclus sp. nov.

Carnivorous diving beetles of the genus Desmopachria (Coleoptera: Dytiscidae) from Brazil: new species, new records, and a checklist.

Eight new species of Desmopachria Babington, 1841 are described and illustrated from Brazil: D. dicrophallica sp nov., D.

A new species of Iapir Py-Daniel, Fonseca & Barbosa (Coleoptera: Myxophaga: Torridincolidae) from Brazil with key to species of the genus.

The genus Iapir is known only from Brazil, currently with five species. This genus is characterized by the lack of a tooth on the hind margin of metatrochanter and a semi-lunar depression prolonged toward apex of the last ventrite on female specimens. Herein we describe an additional species, Iapir vanini sp.

Four new species and first nominal record of Chasmogenus Sharp, 1882 (Coleoptera: Hydrophilidae) from Brazil.

The genus Chasmogenus Sharp, 1882 (Hydrophilidae: Acidocerinae) is recorded from Brazil for the first time. Four new species are described and illustrated from the Southeastern Region of the country: C. fluminensis sp.

New genus and new species of Chauliodinae (Insecta: Megaloptera: Corydalidae) from Brazil.

A new genus and new species of Chauliodinae are described and illustrated, Puri gen. nov. and P.