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Generic review of the Bidessini (Coleoptera, Dytiscidae): contribution to the study of Dytiscidae 37
- O. Biström
Sub-cortical Coleoptera in dead pines and spruces: is primeval species composition maintained in managed forests?
The sub-cortical beetle fauna of dead Scots pine and Norway spruce trunks was compared in primeval forests and managed forests in central Finland and there were striking differences in the abundance relations.
A systematic review of the tribes Hyphydrini Sharp and Pachydrini n. trib. (Coleoptera, Dytiscidae)
The phylogenetic analysis provided support for the monophyly of each of the genera Allopachria and Desmopachria, whereas that of Microdytes, Hyphydrus and Hovahydrus is considered doubtful.
Abundance and distribution of coprophilous Histerini (Histeridae) and Onthophagus and Aphodius (Scarabaeidae) in Finland (Coleoptera)
Monitoring of the distribution and occmTence in Finland for the mainly dung-living histerid genera Margarinotus, Hister, and Atholus and Scarabaeidae suggested changes in the agricultural ecosystems are suggested as a reason for the decline in the occuJTence of certain vulnerable species.
Taxonomic revision of the Ethiopian genus Canthyporus (Coleoptera Dytiscidae)
The genus Canthyporus Zimmermann, 1919, is revised. A total of 35 species are recognized, all of them distributed within the Ethiopian Region, and with a centre of diversity in the South African…
The phylogeny of the Hydroporinae and classification of the genus Peschetius Guignot, 1942 (Coleoptera: Dytiscidae)
The results indicate that the genus Peschetius is the sister group to the tribe Bidessini based mainly on an unambiguous character, the presence of a prominent internal spermathecal spine, and several other more ambiguous or homoplasious characters.
Taxonomic revision of Afrotropical Laccophilus Leach, 1815 (Coleoptera, Dytiscidae)
The African species of the genus Laccophilus Leach, 1815, are revised, on the basis of study of adult specimens, and a phenetic character-analysis was undertaken, which resulted in a split in the genus into 17 species groups.
Revision of the genus Clypeodytes Régimbart in Africa (Coleoptera: Dytiscidae)
- O. Biström
The african species of Clypeodytes Regimbart, 1894 are taxonomically revised based on studies of the adults and the systematics of the genus is discussed.
Species delimitation in the leaf beetle genus Macroplea (Coleoptera, Chrysomelidae) based on mitochondrial DNA, and phylogeographic considerations
The question of species identification and delimitation is addressed by analysing the second half of the mitochondrial gene coding for the cytochrome oxidase I (COI) subunit, and the pattern of nucleotide and amino acid substitutions is discussed in the light of functional domains of the COI molecule.