| 1. |
- A, Komonen, et al.
(author)
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Insects associated with fruit bodies of the wood-decaying fungus Oak mazegill (Daedalea quercina) in mixed oak forests in southern Sweden
- 2012
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In: Entomologisk Tidskrift. - 0013-886X. ; 133:4, s. 173-181
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Journal article (peer-reviewed)abstract
- Polypores host species rich insect assemblages, but relatively few polypore species have been studied in detail. We investigated insect assemblages associated with the fruit bodies of Daedalea quercina, a specialist species on oak in southern Sweden. Fruit bodies (n = 228) were collected from 25 nature reserves and woodland key habitats, and were taken into the laboratory to collect emerging insects. A total of 245 insect individuals were recorded, belonging to at least 45 species. The numerically dominant fungivores were the tineid moths Montescardia tessulatella (n = 38 individuals) and Nemapogon fungivorellus (n = 10) and the coleopteran Ennearthron cornutum (Ciidae) (n = 44). Altogether 40 individuals of hymenopteran parasitoids were recorded, belonging to Braconidae (Exothecinae, Microgastrinae and Rogadinae, altogether 6 spp.), Ichneumonidae (Banchinae, Cryptinae and Orthocentrinae, altogether 4 spp.), Torymidae (1 sp.), Perilampidae (1 sp.) and Scelionidae (1 sp.). Most of the remaining insect species are not specifically associated with fruit bodies, but occupy many types of decaying material. In conclusion, D. quercina hosted a low number of insect individuals in general and only a few coleopteran species. The fungus apparently has only one specialist species, N. fungivorellus, which is a near-threatened (NT) species on the Swedish red list; the record from Norra Vi is the first from the Jönköping. The overall low number of insect individuals and the dominance of Lepidoptera among the fungivores is possibly explained by the tough fruit bodies of D. quercina, which only moths are able to utilize; fruit bodies which had already started to rot were devoid of moths.
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| 2. |
- Albrectsen, Benedicte R., et al.
(author)
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The diversity and identification of eulophid parasitic wasps (Hymenoptera: Chalcidoidea: Eulophidae) on Phyllocnistis labyrinthella (Lepidoptera: Gracillariidae) from Västerbotten, Sweden.
- 2012
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In: Entomologisk tidskrift. - 0013-886X. ; 133:3, s. 111-118
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Journal article (peer-reviewed)abstract
- Caterpillars of the mining micro-moth Phyllocnistis labyrinthella feed on leaves of aspen (Populus tremula) and are often parasitized by eulophid wasps. The parasitoids are a potential important cause of death for the miners. During 2009-2011 we collected mined leaves from an experimental stand of aspen trees in Västerbotten. Adults emerged from 17-35 percent of the mines and of these every second to third specimen appeared as wasps. These wasps represented seven species of eulophid parasitoids of which three were new to Västerbotten: Chrysocharis nitetis (Walker), Cirrospilus diallus (Walker) and Cirrospilus pictus (Nees). We include an identification key that may be used to identify these eulophid species.
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| 3. |
- Bergsten, Johannes, 1975-, et al.
(author)
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Arbetet med donationer av insektsamlingar vid Naturhistoriska Riksmuseet
- 2014
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In: Entomologisk Tidskrift. - 0013-886X. ; 134, s. 153-162
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Journal article (pop. science, debate, etc.)abstract
- We describe the work with donated insect collections at the Swedish Museum of NaturalHistory (NRM) in Stockholm, Sweden. The museum receives donations yearly fromamateur entomologists, and they are an important contribution to the enrichment of thecollections. For the collector it is satisfying that a public institution takes on the long termresponsibility of safeguarding the scientific value in a collection, curating and making itavailable for study. Significant donations in the last years include that of Lars Huggert(Hymenoptera, Coleoptera), Hans Bartsch (Diptera) and Anders N. Nilsson (aquatic Coleoptera)to name a few. The curatorial and digitizing workload at the Entomology collectionare unfortunately not matched by staff funding, and as at other European museumsvolunteer work constitute vital and invaluable help. We acknowledge especially some ofthe volunteer work in the Coleoptera and Hymenoptera collections. Recently we have engagedwith amateur entomologists by organizing taxon-specific workshops at the museumwhich has stimulated exchange and collaboration. The Hymenoptera-day was visited by 30participants, and the Diptera-meeting by 49. As an example of what happens with a donationonce it reaches the museum, we describe the work with a recent Coleoptera collectiondonation by Jan Olsson, Vallentuna. A few highlights from the unidentified material,including the Archostematan beetle Priacma serrata (Cupedidae) and the false jewelbeetleSchizopus laetus (Schizopodidae), are presented as they were new to the NRM collections.We also bring attention to two new websites: www.naturarv.se is the webportal presentingdigitized material in Swedish natural history collections. Both metadata on specimens andphotos are made searchable here. We also launch a new webpage at www.nrm.se/insektsdonationerwhere we write about new donations to the Entomology collections, with JanOlsson’s Coleoptera collection first out.
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| 4. |
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| 5. |
- Björkman, Christer, et al.
(author)
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A rare event – an isolated outbreak of the pine-tree lappet moth (Dendrolimus pini) in the Stockholm archipelago
- 2013
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In: Entomologisk tidskrift. - 0013-886X. ; 134, s. 1-9
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Journal article (peer-reviewed)abstract
- The pine-tree lappet moth, Dendrolimus pini (L.), belonging to the family Lasiocampidae has a wide distribution in Eurasia. In Sweden it is normally found up to 61°N and normally occurs at low densities. In central Europe there have been several reports of outbreaks in historical time. In Sweden the last known outbreak before the one reported here was in 1938-40 in Värmland. In this paper we report a recent severe D. pini outbreak that was discovered in 2012 on the small island Furuskär in the Stockholm archipelago. The distribution of the damage on the island as well as a detailed inventory of larvae and pupae on individual trees is presented. Several photographs are presented to illustrate the damage. In the paper we formulate and try to answer several questions that arose as a natural consequence of this rare event: Why was this particular island hit? What are the causes behind the outbreak? What will happen to the trees and the vegetation on the island? Will the outbreak continue? Will the outbreak spread?
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| 6. |
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| 7. |
- Cederström, Peter, et al.
(author)
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Fotblomflugor Platycheirus (Diptera, Syrphidae) längs den svenska fjällkedjan: en flerårig inventering.
- 2014
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In: Entomologisk tidskrift. - 0013-886X. ; 135, s. 109-130
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Journal article (peer-reviewed)abstract
- The fauna of hoverflies in Boreal and Arctic parts of Scandinavia is still very poorly investigated. Therefore we performed an 11 year survey of the hoverfly genus Platycheirus Lepeletier & Serville, 1828 along the Caledonian mountain chain in Sweden (from Värmland northwards to the Torneträsk area). During 2003-2013 we annually performed two trips in order to survey various areas and to collect flies by netting. Altogether 150 localities were visited and a total of 1862 Platycheirus-specimens belonging to 40 species were collected. Two species were recorded for the first time in Sweden: Platycheirus carinatus(Curran, 1927) and P. magadanensis Mutin, 1999 and 74 records were new for various fauna-provinces. Four main areas were selected for comparative studies on distribution, habitat, local migration and environmental influences on population fluctuation of Platycheirus-species. We noted that males hatch earlier than females and the latter sex await the maturing anthers of their feeding plants. Moreover, Platycheirus-species in alpine and subalpine terrain seem to be very cold resistant and active at air-temperatures around 10O C. Environmental disturbance within the subalpine and northern boreal vegetation zones, e.g. cutting of woods or constructing of slalom slopes, creates new flower rich habitats and therefore support the population sizes within this assemblage of overflies. The observed distribution of northern Platycheirus-species along the Boreal and Arctic parts of Scandinavia reflects its worldwide Holarctic and Palearctic relations.
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| 8. |
- Forshage, Mattias, et al.
(author)
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Vem var Sveriges första kvinnliga entomolog?
- 2014
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In: Entomologisk Tidskrift. - : Sveriges Entomologiska Förening. - 0013-886X. ; 135, s. 187-197
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Journal article (peer-reviewed)abstract
- The question of who can be considered Sweden’s first female entomologist is not easy toanswer and depends a lot on criteria; here it leads to a more general survey of women in Swedish entomology. Several persons who are candidates for being considered entomologist pioneers are presented, and the conditions for women to engage in entomology are briefly discussed. Such candidates include the following persons. Queen Lovisa Ulrika, Linnaeus’ benefactor, had an insect collection. The first female member of the Entomological Society in Stockholm was Signe Nordenskjöld in 1892. While Cecilia Andersson seems to be the first independent, active female insect collector in Sweden, in the early 20th century. Ida Trotzig collected Lepidoptera in Japan for the Stockholm museum. At that time, preparator Signe Ramberg and illustrator Therese Ekblom at the Stockholm museum were the first female professional entomologists. Only later, the entomological societies included somewhat larger number of female entomologists, and the first woman to get a PhD in entomology in Sweden was Christine Dahl, who also became the first female entomologist full professor.
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| 9. |
- Fägerström, Christoffer, et al.
(author)
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Nya och förväntade öronvivelarter (Coleoptera: Otiorhynchini) på prydnadsbuskar i Sverige
- 2010
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In: Entomologisk tidskrift. - 0013-886X. ; 131:1, s. 37-48
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Journal article (peer-reviewed)abstract
- During the last couple of years leaf-edge-cuts, typical of Otiorhynchus, a genus of wingless weevils, have been discovered on ornamental shrubs, especially on lilac (Syringa vulgaris) and privet (Ligustrum vulgare). An inventory was made in gardens in west Scania 2009. The results show that we in Sweden have a new species of wingless-weevil, Dodecastichus inflatus (former known as Otiorhynchus inflatus). Further more, the weevil Otiorhynchus smreczynskii was shown to be established in a much larger geographic area than previously known. This species was the most common on lilac and privet and caused the majority of the damages. The morphology of these two species is described. The extension and appearances of the damages have been documented in order to see if different weevil species make different types of edge-cuts. Several weevil species have spred in gardens in our neighbouring countries during the last decades. The species most likely to occur more frequently in Sweden are described. These six Otiorhynchus species, that are potential pests in our gardens, are: O. tenebricosus, O. salicicola, O. crataegi, O. dieckmanni, O. aurifer and O. armadillo.
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| 10. |
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