02732nas a2200301 4500008004100000245010000041210006900141300000900210490000800219520171100227653001801938653003401956653001601990653009502006653001902101653004602120653001302166653001802179653000902197653001902206100001802225700001902243700001802262700001802280700001802298700002002316856009402336 2005 eng d00aRegional diversity of mycetophilids (Diptera: Sciaroidea) in Scandinavian oak-dominated forests0 aRegional diversity of mycetophilids Diptera Sciaroidea in Scandi a9-200 v1213 aMycetophilids is a species-rich insect group for which the ecological requirements in temperate forests are poorly understood. This study of mycetophilids was based on trap samples from 15 oak-dominated sites in the boreonemoral zone of southern Sweden. Species richness and composition were analysed in relation to environmental variables at a local and at larger scales (multiple regression), and compared to results from similar studies in spruce-dominated sites in the boreal zone of Norway (PCA and two-sample t tests). Regressions showing a dominance of regional factors over local in-site variables agree with species-richness models assuming that local communities most often are unsaturated. Precipitation (inter-correlated with elevation) was the strongest factor for explaining the variation in species-richness, which is consistent with previous results indicating that mycetophilids are disfavoured by drought. In addition to precipitation, the area of mixed forest with high biodiversity values (woodland key habitats and protected areas) was a positive factor for species-richness, probably because such habitats combine elements of both coniferous and deciduous forests. PCA ordination revealed a clear separation of the species composition between boreal and boreonemoral forests. Species-richness in boreal forest was significantly higher than in boreonemoral forest, indicating a preference for boreal habitats in many of the species. For mycetophilids and other drought-sensitive insects, it is suggested that (partial) cutting in some dense successional oak stands should be avoided, and that some invading spruces should be tolerated. Copyright 2004 Elsevier Ltd. All rights reserved.10aAngiospermae-10aAnimalia-; [26070-] Fagaceae-10aArthropoda-10aBiodiversity-; Biogeography-: Population-Studies; Forestry-; Terrestrial-Ecology: Ecology-10aDicotyledones-10aEnvironmental-Sciences; [75314-] Diptera-10aInsecta-10aInvertebrata-10aPlan10aSpermatophyta-1 aOkland, Bjorn1 aGotmark, Frank1 aNorden, Bjorn1 aFranc, Niklas1 aKurina, Olavi1 aPolevoi, Alexei uhttp://www.online-keys.net/sciaroidea/2000_/Okland_et_al_2005_regional_Mycetophilidae.pdf01318nas a2200217 4500008004100000245012100041210006900162300001000231490000700241520036300248653023500611653001600846653001600862653001300878653001300891653001800904653006300922653004800985100001801033856004901051 2003 eng d00aNotes on the Palaearctic species of the genus Polylepta Winnertz (Diptera: Mycetophilidae) with a new synonymization0 aNotes on the Palaearctic species of the genus Polylepta Winnertz a91-970 v143 a
Morphological differences between three Palaearctic species of Polylepta Winnertz-P. borealis Lundstrom, P. guttiventris (Zetterstedt) and P. zonata (Zetterstedt) - are discussed and detailed genital figures for males and females are given. Polylepta meridionalis Bechev, 1990 is shown to be a junior synonym of Polylepta zonata (Zetterstedt, 1852).
10aAnimalia-; Polylepta- (Diptera-): genus-; Polylepta-borealis (Diptera-): species-; Polylepta-guttiventris (Diptera-): species-; Polylepta-meridionalis (Diptera-): species-; Polylepta-zonata (Diptera-): species-; Diptera-: Animals-10aArthropoda-10aArthropods-10aInsecta-10aInsects-10aInvertebrata-10aInvertebrates-; morphological-differences; synonymization-10aSystematics-and-Taxonomy; [75314-] Diptera-1 aKurina, Olavi uhttps://sciaroidea.myspecies.info/node/2231901408nas a2200217 4500008004100000245012400041210006900165300001200234490000700246520055700253653006200810653001600872653001600888653001300904653001300917653001800930653011400948653006101062100001801123856004901141 2001 eng d00aOn the identification of Palaearctic species in the genus Cordyla Meigen (Diptera, Mycetophilidae); preliminary results0 aidentification of Palaearctic species in the genus Cordyla Meige a231-2350 v483 aThe morphology of male specimens of 14 Palaearctic Cordyla species is studied. The species can be arranged according to the colour of the swollen segment of palpus, the number of flagellar segments and the structure of male genitalia. On the basis of the colour of the swollen segment of palpi the species can be divided into two groups, the number of flagellar segments into four groups, and the structure of the genitalia into three groups. Morphological differences between the groups are discussed with an emphasise on genital differences.
10aAnimalia-; Cordyla- (Diptera-): male-; Diptera-: Animals-10aArthropoda-10aArthropods-10aInsecta-10aInsects-10aInvertebrata-10aInvertebrates-; genitalia-: reproductive-system; palpus-; coloration-; morphological-differences; morphology-10aMorphology-; Systematics-and-Taxonomy; [75314-] Diptera-1 aKurina, Olavi uhttps://sciaroidea.myspecies.info/node/22318