Seven new species of the group from New Guinea central and coastal mountains (Coleoptera, Dytiscidae, Copelatinae).

Seven new species of the genus Broun, 1886 are described from three different mountain ranges of New Guinea: , , , and from the Foja Mountains; from the Cyclops Mountains; and from Wano Land. All of them are placed into the group based on the structure of their male genitalia. The species are characteristic dytiscid elements of the fauna of northern cost and the western part of central orogen of New Guinea.

New Guinean orogenic dynamics and biota evolution revealed using a custom geospatial analysis pipeline.

Background: The New Guinean archipelago has been shaped by millions of years of plate tectonic activity combined with long-term fluctuations in climate and sea level. These processes combined with New Guinea's location at the tectonic junction between the Australian and Pacific plates are inherently linked to the evolution of its rich endemic biota. With the advent of molecular phylogenetics and an increasing amount of geological data, the field of New Guinean biogeography begins to be reinvigorated.

Three new species of Broun, 1886 from the southern slopes of the New Guinea central range, with introduction of the group (Coleoptera, Dytiscidae, Copelatinae).

Three new species of the genus Broun, 1886: , and are described from New Guinea. The former two species are placed into the group, while the latter is suggested to be a member of a separate lineage, the newly introduced group. The only other species of that group is Shaverdo & Balke, 2014.

Two new species of the group from New Guinea with strongly modified male antennae (Coleoptera, Dytiscidae, Copelatinae).

Two new species of the genus Broun, 1886: and are described from New Guinea and placed into the group based on the structure of their male genitalia. The two species are very similar with respect to their external morphology and characterised by almost identical, strongly modified male antennae. However, they can easily be separated by the shape and setation of the median lobe and paramere.

Descriptions of two new species and one new subspecies from the -group, and notes on the -group (Coleoptera, Dytiscidae, Copelatinae).

Two new species and one new subspecies of Broun, 1886 from New Guinea are described: Shaverdo & Balke, , Shaverdo & Balke, , and Shaverdo & Balke, These and two already described species are assigned to the -group, which is morphologically (based on setation of the paramere) and phylogenetically close to the -group. On the latter, morphological and taxonomic notes are provided. An identification key to all known species of the groups is presented, and important diagnostic characters are illustrated.

Six new species of the genus Broun, 1886 from Wano Land, New Guinea (Coleoptera, Dytiscidae, Copelatinae).

Six new species of New Guinea Broun, 1886 are described in this paper: , , , , , and . Although different morphologically, together with (Balke, 1998), (Balke & Hendrich, 2001), and Shaverdo, Panjaitan & Balke, 2016, they are found to form a monophyletic clade and be closely related to representatives of the -group, based on preliminary analysis of sequence data. An identification key to the species is provided, and important diagnostic characters are illustrated.