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  • 1.
    Fernholm, Bo
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Riksmuseet, Riksmusei Vänner och Malaise2015Ingår i: Entomologisk Tidskrift, ISSN 0013-886X, Vol. 136, nr 4, s. 139-142Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    En regnig och blåsig höstdag den 13 november1916 invigde kung Gustav V Naturhistoriskariksmuseets nya lokaler i Frescati, en monumentalbyggnad på granitsockel med mörkt rött tegeli fasaderna (Fig. 1). Den fantastiska kupolenmed sitt koppartak och glas har nyligen genomgripanderenoverats och framträder i skick somnytt. I kupolen var det tänkt att en Foucault´spendel skulle hänga. Diskussioner om pendelnhar nyligen åter initierats av Riksmusei vänner.De rikliga utsmyckningarna är värda att tittaefter. De flesta missar nog tyvärr de två bamsigabjörnungarna som pryder entrén från stora vägennär museet fått nya infarter. Samma år utkom boken”Naturhistoriska riksmuseets historia, Dessuppkomst och utveckling” utgiven av KungligaVetenskapsakademien. Boken kan sägas varasamlingarnas historia. Där beskrivs hur museetär årsbarn med Vetenskapsakademien, som närden grundades 1739 av bl. a. Linné också inrättadeett skåp för naturalier. Av den anledningenfirade Naturhistoriska riksmuseet sitt 250 års jubileummed pompa och ståt år 1989.Mindre än ett decennium efter att NaturhistoriskaRiksmuseet flyttade till Frescati, år 1925,bildades föreningen Riksmusei Vänner somstödjer museet på många olika vis. Vi vill medden här artikeln dels informera om föreningenoch uppmuntra till medlemsskap, dels beskrivaföreningens koppling till svensk entomologi ochsärskilt Renè Malaise.

  • 2.
    Forshage, Mattias
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Dale-Skey Papilloud, Natalie
    Department of Life Sciences, the Natural History Museum (London, United Kingdom).
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Insect species described by Karl-Johan Hedqvist2016Ingår i: Journal of Hymenoptera Research, ISSN 0219-8916, E-ISSN 1843-5610, Vol. 51, s. 101-158Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Swedish entomologist, Karl-Johan Hedqvist (1917–2009) described 261 species of insects, 260 speciesof Hymenoptera and one of Coleoptera, plus 72 genera and a small number of family-level taxa. Thesetaxa are catalogued and the current depositories of the types are listed, as well as some brief notes on thehistory of the Hedqvist collection. We also discuss some issues that can arise when type-rich specimencollections are put on the commercial market.

  • 3.
    Forshage, Mattias
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Vem var Sveriges första kvinnliga entomolog?2014Ingår i: Entomologisk Tidskrift, ISSN 0013-886X, Vol. 135, s. 187-197Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    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.

  • 4.
    Liston, Andrew
    et al.
    Senckenberg Deutsches Entomologisches Institut, Eberswalder Straße 90, 15374 Müncheberg, Germany..
    Heibo, Erik
    Prous, Marko
    Senckenberg Deutsches Entomologisches Institut, Eberswalder Straße 90, 15374 Müncheberg, Germany.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Nyman, Tommi
    Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland.
    Vikberg, Veli
    North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae)2017Ingår i: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 4302, s. 1-115Artikel, recension (Refereegranskat)
    Abstract [en]

    The sawfly genus Euura of the tenthredinid subfamily Nematinae, in which species level taxonomy has long been regarded as controversial, is particularly species rich in northern parts of the Holarctic. Among a majority of species with more or less free-living larvae, a sizeable minority belongs to a monophyletic lineage whose larvae complete their whole development in galls. We present illustrated keys to the adults and galls of 66 gall-inducing Euura species that occur, or might occur, in northern Europe. The distribution of these species is briefly reviewed, with an emphasis on the fauna of Sweden, where 55 species are now definitely recorded, two of them for the first time (E. bigallaeE. myrtilloidica). The species-level taxonomy of gall-inducing Euura remains partly problematic. Nominal species described on the basis of experimentally tested or assumed host plant specificity, but which cannot be recognised using morphological or genetic characters, are treated as conspecific with currently indistinguishable segregates ("host-plant races") associated with other Salix species. 20 new synonymies are proposed (valid names in parentheses): Eupontania acutifoliae baltica Vikberg & Zinovjev, 2006 and Pontania acutifoliae daphnoides Zinovjev, 1993 (Euura acutifoliae(Zinovjev, 1985)), Euura boreoalpina Kopelke, 2001 (Euura lanatae Malaise, 1921), Euura cinereae Kopelke, 1996 preoccupied and Euura lapponica Kopelke, 1996 preoccupied (Euura auritae Kopelke 2000), Euura gemmacinereae Kopelke, 2001 and E. nigritarsis Cameron, 1885 (Euura mucronata (Hartig, 1837)), Euura phylicifoliaeKopelke, 2001 (Euura myrsinifoliae Kopelke, 2001), Nematus westermanni Boheman, 1852 nomen oblitum (Euura scotaspis (Förster, 1854) nomen protectum), Nematus acerosus Hartig, 1840 (Euura saliciscinereae (Retzius, 1783)), Nematus alienatusFörster, 1854 and Phyllocolpa rolleri Liston, 2005 (Euura leucapsis (Tischbein, 1846)), Nematus angustus Hartig, 1837 (Euura atra (Jurine, 1807)), Nematus erythropygusFörster, 1854 (Euura leucosticta (Hartig, 1837)), Nematus impunctatus Herrich-Schäffer, 1840 (Euura amerinae (Linnaeus, 1758)), Pontania carinifrons Benson, 1940 and Phyllocolpa plicaglauca Kopelke, 2007 (Euura destricta (MacGillivray, 1923)), Pontania obscura Kopelke, 2005 (Euura bridgmanii (Cameron, 1883)), Pontania viminalis var. lugubris Enslin, 1918 and Eupontania collactanea rosmarinifoliae Vikberg & Zinovjev, 2006 (Euura collactanea (Förster, 1854)). Euura weiffenbachiella nom. nov. is proposed as a replacement name for Euura weiffenbachii Ermolenko, 1988; preoccupied in Euuraby Pteronidea weiffenbachi Lindqvist, 1958 (Euura piliserra (Thomson, 1863)). Lectotypes are designated for the following 9 taxa: Euura insularis Kincaid, 1900, Euura lanatae Malaise, 1921, Euura lappo Malaise, 1921, Euura lappo var. hastatae Malaise, 1921, Nematus acerosus Hartig, 1840, Nematus leptocerus Förster, 1854, Nematus vallisnierii Hartig, 1837, Pontania megacephala Rohwer, 1908, and Pontania piliserra var. mascula Enslin, 1915. Because of secondary homonymy within Euura, the valid name of the Nearctic species E. arctica MacGillivray, 1919 is E. delicatula (MacGillivray, 1919). The Nearctic Euura megacephala is removed from synonymy with the Holarctic E. destricta and treated as a valid species. 34 species names are newly combined with Euura.

  • 5. Nieves-Aldrey, José Luis
    et al.
    Vårdal, Hege
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolution, genomik och systematik, Systematisk zoologi.
    Ronquist, Fredrik
    Comparative morphology of terminal-instar larvae of Cynipoidea: phylogenetic implicationsIngår i: Zoologica ScriptaArtikel i tidskrift (Refereegranskat)
  • 6. Nieves-Aldrey, NL
    et al.
    Vårdal, Hege
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Institutionen för evolution, genomik och systematik. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Institutionen för evolution, genomik och systematik, Systematisk zoologi. systematisk zoologi.
    Ronquist, Fredrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Institutionen för evolution, genomik och systematik. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Institutionen för evolution, genomik och systematik, Systematisk zoologi. systematisk zoologi.
    Comparative morphology of terminal-instar larvae of Cynipoidea: phylogenetic implications2005Ingår i: Zoologica Scripta, Vol. 34, s. 15-36Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 7. Persson Vinnersten, Thomas
    et al.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Hege Vårdal2015Ingår i: Yrfän, Vol. 2, s. 10-12Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Hege Vårdal firar i år 20-årsjubileum som insektsentusiast. Hon harunder denna tid studerat biologi i Bergen och doktorerat i Uppsala men nuhar hon sitt drömjobb: stekelintendent på Naturhistoriska riksmuseet.

  • 8.
    Prous, Marko
    et al.
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Blank, Stephan M.
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Goulet, Henri
    Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa, Canada.
    Heibo, Erik
    Ento Consulting, Lierskogen, Norway.
    Liston, Andrew
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Malm, Tobias
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Nyman, Tommi
    University of Eastern Finland, Joensuu, Finland.
    Schmidt, Stefan
    Zoologische Staatssammlung, Munich, Germany.
    Smith, Dave
    Smithsonian Institution, Washington, DC, United States of America.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Viitasaari, Matti
    Unaffiliated, Helsinki, Finland.
    Vikberg, Veli
    Unaffiliated, Turenki, Finland.
    Taeger, Andreas
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    The genera of Nematinae (Hymenoptera, Tenthredinidae)2014Ingår i: Journal of Hymenoptera Research, ISSN 1314-2607, Vol. 40, s. 1-69Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Recent phylogenetic studies on Nematinae based on DNA sequences have shown extensive incongruencies with current nomenclature of genus-group taxa. Here, we expand previous DNA sequence datasets based on three genes (CoI, Cytb, and EF-1α), to include a fourth (NaK) and more genera. The analyses largely confirm the previous findings, particularly the existence of two well-supported large clades, Euura and Pristiphora, together comprising more than 75% of the species of Nematinae. Basal relationships within these two clades remain poorly resolved, mirroring the difficulties in delimiting genera based on morphology. In addition, a moderately supported small clade, Nematus, is found. The relationships between the Euura, Pristiphora, and Nematus clades are uncertain. Therefore, to stabilize the nomenclature we treat these clades as genera. This taxonomic treatment results in numerous new combinations of species names. The following synonymies are proposed for the available genus-group names. Synonyms of Euura Newman, 1837: Cryptocampus Hartig, 1837, Euura Agassiz, 1848, Pontania Costa, 1852, syn. n., Epitactus Förster, 1854, syn. n., Amauronematus Konow, 1890, syn. n., Holcocneme Konow, 1890, syn. n., Pachynematus Konow, 1890, syn. n., Holcocnema Schulz, 1906, syn. n., Holcocnemis Konow, 1907, syn. n., Pteronidea Rohwer, 1911, syn. n., Pontopristia Malaise, 1921, syn. n., Brachycoluma Strand, 1929, syn. n., Decanematus Malaise, 1931, syn. n., Pikonema Ross, 1937, syn. n., Phyllocolpa Benson, 1960, syn. n., Eitelius Kontuniemi, 1966, syn. n., Gemmura E.L. Smith, 1968, Eupontania Zinovjev, 1985, syn. n., Larinematus Zhelochovtsev, 1988, syn. n., Polynematus Zhelochovtsev, 1988, syn. n., Bacconematus Zhelochovtsev, 1988, syn. n., Alpinematus Lacourt, 1996, syn. n., Epicenematus Lacourt, 1998, syn. n., Kontuniemiana Lacourt, 1998, syn. n., Lindqvistia Lacourt, 1998, syn. n., Luea Wei and Nie, 1998, syn. n., and Tubpontania Vikberg, 2010, syn. n. Synonyms of Nematus Panzer, 1801: Craesus Leach, 1817, Hypolaepus W.F. Kirby, 1882, and Paranematus Zinovjev, 1978. Synonyms of Pristiphora Latreille, 1810: Diphadnus Hartig, 1837, Lygaeonematus Konow, 1890, Micronematus Konow, 1890, Gymnonychus Marlatt, 1896, Neopareophora MacGillivray, 1908, syn. n., Neotomostethus MacGillivray, 1908, Dineuridea Rohwer, 1912, Sala Ross, 1937, Pristola Ross, 1945, syn. n., Nepionema Benson, 1960, syn. n., Melastola Wong, 1968, syn. n., Sharliphora Wong, 1969, Oligonematus Zhelochovtsev, 1988, Lygaeotus Liston, 1993, Lygaeophora Liston, 1993, and Pristicampus Zinovjev, 1993, syn. n. Varna Ross, 1937, syn. n. is treated as a synonym of Dineura Dahlbom 1835. Stauronematus Benson, 1953 is treated as a separate genus from Pristiphora. Names of 20 species-group taxa are junior secondary homonyms when combined with Euura. Replacement names are proposed for these. To facilitate the identification of Nematinae genera, we provide an illustrated key to the 31 extant genera of world Nematinae.

  • 9.
    Prous, Marko
    et al.
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Blank, Stephan M.
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Heibo, Erik
    Ento Consulting, Lierskogen, Norway.
    Lønnve, Ole
    BioFokus, Gaustadalèen 21, NO-0349 Oslo, Norge.
    Taeger, Andreas
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Liston, Andrew
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    Sawflies (Hymenoptera, Symphyta) newly recorded from Sweden2014Ingår i: Entomologisk Tidskrift, ISSN 0013-886X, ISSN 0013-886X, Vol. 135, nr 3, s. 135-146Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The first records from Sweden of 15 species of sawfly are presented: 2 species of Pamphiliidae,1 Argidae, 11 Tenthredinidae and 1 Cimbicidae. Of these, Empria camtschaticaand E. plana are also recorded for the first time in Europe. An illustrated key is providedto distinguish them from similar species (E. immersa, E. fletcheri). Rhogogaster polarisLindqvist, 1964 is treated as a valid species (species revocata). The number of Symphytaspecies that occur in Sweden and possible deficits in recording strategies are discussed.

  • 10. Rosa, Paolo
    et al.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    An annotated catalogue of the types of Chrysididae (Hymenoptera) at the Swedish Museum of Natural History, Stockholm, with brief historical notes2015Ingår i: ZooKeys, ISSN 1313-2989, E-ISSN 1313-2970, Vol. 495, s. 79-132Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A critical and annotated catalogue of 72 types of Chrysididae (Hymenoptera) belonging to 53 species and subspecies housed in the Swedish Museum of Natural History is given. The lectotypes of Chrysis diversa Dahlbom, 1845, C. soror Dahlbom, 1854, Chrysura sulcata Dahlbom, 1845 and Holopyga amoenula Dahlbom, 1845 are designated. The previous lectotype of Chrysis diversa Dahlbom, 1845 is set aside. Five new synonymies are proposed: Chrysis elegans var. smaragdula Trautmann, 1926 (currently C. elegans ssp. interrogata Linsenmaier, 1959 repl. name for smaragdula Trautmann, nec Fabricius, 1775), syn. n. of C. confluens (Dahlbom, 1845); C. eximia Mocsáry, 1889, syn. n. of C. poecila Mocsáry, 1889; C. pyrrhina Dahlbom, 1845, syn. n. of C. erythromelas Dahlbom, 1845; C. separata Trautmann, 1926, syn. n. of C. lateralis Dahlbom, 1845; C. sicula Abeille de Perrin, 1877, syn. n. of C. erythromelas Dahlbom, 1845. Chrysis serena Radoszkowski, 1891 is the first available name for C. pyrrhina sensu auctorum. C. erythromelas Dahlbom, 1845 is revaluated as valid species. The neotype of Chrysis inaequalis Dahlbom, 1845 is designated in the Linsenmaier collection (NMLS). Illustrations of 34 types are given.

  • 11.
    Stigenberg, Julia
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Berger, Josef
    Department of Biology, Lund University, Lund, Sweden.
    Forshage, Mattias
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Johansson, Niklas
    Larsson, Artur
    ArtDatabanken, Box 7007, 75007 Uppsala.
    Lønnve, Ole
    BioFokus, Gaustadalléen 21, NO-0349 Oslo, Norway.
    Reshchikov, Alexey
    Sun Yat-sen University, 135 Xingangxi St. Guangzhou, 510275, China.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Österblad, Ika
    Snapshot of the Hymenopteran fauna of Stora Karlsö2017Ingår i: Entomologisk Tidskrift, ISSN 0013-886X, Vol. 138, s. 71-91Artikel, recension (Refereegranskat)
    Abstract [en]

    Stora Karlsö is a small island close to Gotland in the Baltic Sea of which the Hymenopteran

    fauna has not been extensively studied before. In August 2014, a team of eight persons

    carried out an inventory of Hymenoptera, mainly the parasitoid wasps and sawflies, on

    the island. Sampling was done with Malaise traps for a period of 22 days, complemented

    with vegetation sweeping, branch shaking and opportunistic handpicking during a five day

    sojourn. As a result, about 200 species of parasitoid wasps and 14 sawflies are reported for

    Stora Karlsö for the first time. Eleven species are reported as new to Sweden: The sawfly

    Athalia cornubiae Benson, 1931, the gasteruptiid Gasteruption opacum (Tournier, 1877),

    the diapriid Spilomicrus rufitarsis (Kieffer, 1911), the eulophid Entedonomphale bulgarica

    Boyadzhiev & Triapitsyn, 2007, the braconids Bracon rozneri Papp, 1998 and Gnamptodon

    decoris (Förster, 1862), and the ichneumonids Bathythrix maculata (Hellén, 1957),

    Heterischnus filiformis (Gravenhorst, 1829), Lissonota picticoxis Schmiedeknecht, 1900,

    Mesochorus tipularius Gravenhorst, 1829, Ophion brevicornis Morley, 1915, and Plectochorus

    iwatensis (Uchida, 1928). Also the gasteruptiid Gasteruption opacum (Tournier,

    1877) is reported new to Sweden based on a record from inventory by NJ in 2013. This

    demonstrates how the knowledge of Swedish biodiversity can be substantially augmented

    by a short and intensive collecting expedition. We strongly recommend that other places in

    the country be subjected to similar efforts.

  • 12.
    Stigenberg, Julia
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Parasitsteklar2014Ingår i: Museosaurien, Vol. 2, s. 10-11Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Vad är steklar kanske du tänker, de har jag aldrig hört talas om. Fast visst vet du vad enmyra, bi och geting är? De är alla steklar. Här har vi inte skrivit om myror och bin, utanom steklar som lever på ett helt annat sätt– nämligen steklar som lever på andra djur.

  • 13. Vikberg, Veli
    et al.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Taxonomy of some European species of Mesochorus, including three new species from Finland and Sweden (Hymenoptera: Ichneumonidae: Mesochorinae)2017Ingår i: w-album, ISSN ISSN 1795-665X, Vol. 20, s. 3-42Artikel, recension (Refereegranskat)
    Abstract [en]

    Redescriptions of the following seven species are made: Mesochorus gemellus Holmgren, 1860, M. tachypus Holmgren,

    1860, M. diversicolor Viereck, 1912, M. brevicollis Thomson, 1886, M. giberius (Thunberg, 1822), M. marginatus Thomson, 1886,

    and M. tetricus Holmgren, 1860. Three new species are described: M. marginatoides Vikberg sp. n. from Finland and Sweden, M.

    skanensis Vikberg sp. n. from Sweden, and M. ranini Vikberg sp. n. from Finland. The female of M. plumosus Dasch, 1971 is

    described from Finland (this species is known earlier only from N. America). A key to females of the eleven studied European

    species of Mesochorus is included.

    The following formal nomenclatural acts or changes are made: lectotypes are designated for Mesochorus tachypus Holmgren, 1860

    and for M. tetricus Holmgren, 1860. Mesochorus tachypus Holmgren, 1860, stat. n. (= M. macrurus Thomson, 1886, syn. n.), M.

    diversicolor Viereck, 1912, stat. n., M. brevicollis Thomson, 1886, stat. n., M. marginatus Thomson, 1886, stat. n., and M. tetricus

    Holmgren, 1860 (= M. curvicauda Thomson, 1886, syn. n.).

    Many females of M. tachypus and M. tetricus were found near the ground in the spruce forests in Janakkala, South Finland very

    late in the season (from October to December in 2011-2016). M. cimbicis (Ratzeburg, 1844) has been reared from cocoons of

    Trichiosoma sp. (scalesii Leach aggregate) and T. nanae Vikberg & Viitasaari in Finland. The correct primary host of Mesochorus

    bipartitus Schwenke, 1999 is Lygus rugulipennis Poppius (Hemiptera: Miridae).

  • 14.
    Vårdal, Hege
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolution, genomik och systematik, Systematisk zoologi.
    From Parasitoids to Gall Inducers and Inquilines: Morphological Evolution in Cynipoid Wasps2004Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    One of the large lineages of parasitic wasps, the Cynipoidea, exhibits three distinctly different life modes. Slightly more than half of the about 3000 species are parasitoids in insect larvae, whereas the remaining species are associated with plants, either as gall inducers or as inquilines (guests feeding on plant tissue in galls). The main focus of this thesis has been to identify morphological changes associated with the shifts between life modes. Particular attention was paid to structures believed to be important in gall initiation. Comparative anatomical studies of the egg, larva and venom apparatus were performed, including representatives of parasitoids, gall inducers and inquilines. Examination of gross morphology and ultrastructure revealed that the eggs of the gall inducers are larger and surrounded by a thicker shell than the parasitoid eggs. These differences may be related to the fact that the gall inducer egg contains sufficient egg yolk for the embryo during the entire egg period, whereas the parasitoid egg often absorbs nutrients through the eggshell. Furthermore, the gall inducer egg is probably more exposed to desiccation and therefore a thicker and more resistant eggshell is crucial. Comparing the terminal-instar larvae of about 30 species of parasitoids, gall inducers and inquilines, extensive morphological variation was found, particularly in the head and mouthpart features. The variation was summarized in 33 morphological and one life-history character and parsimony analyses were performed. The resulting phylogenetic estimates were largely in accordance with previous analyses of adult morphology and molecular data. The larval data point to a single origin of the inquilines, in agreement with adult morphology but in conflict with molecular data. The venom apparatus was found to be quite uniform in structure among a sample of 25 species of cynipoid species. It consists of a very short venom duct, a reservoir and a single unbranched venom gland. With few exceptions, the venom apparatus is conspicuously larger relative to the female metasoma in the gall inhabiting species than in the parasitoids. We found little evidence of anatomical structures that could facilitate chemical communication between the gall-inducer embryo and the surrounding plant tissue through the thick eggshell. On the other hand, the enormous venom glands and reservoirs, which are apparently not used for defence, suggest that the adult female plays a significant role in gall induction by injecting secretions into the host plant when laying eggs.

  • 15.
    Vårdal, Hege
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Nieves-Aldrey, José Luis
    Museo Nacional de Ciencias Naturales, Departamento de Biodiversidad y Biología Evolutiva (Madrid, Spain).
    OVARIAN EGG MORPHOLOGY IN CHALCIDOID WASPS(HYMENOPTERA: CHALCIDOIDEA) PARASITIZINGGALL WASPS (HYMENOPTERA: CYNIPIDAE)2016Ingår i: Graellsia, ISSN 0367-5041, E-ISSN 1989-953X, Vol. 72, nr 1, s. 1-17Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We provide morphological egg data of 26 species of 5 chalcidoid families associated with cynipid galls(Hymenoptera: Cynipidae) from western Palaearctic, including the first egg data for the family Ormyridae. Adultchalcidoid species were reared from galls, and eggs obtained from dissected female ovaries were examinedusing scanning electron microscopy (SEM). The shape of the eggs varies from oval to elongate and taperedat both ends. Eggs of Eurytomidae as well as some Eulophidae, Eupelmidae and Pteromalidae are equippedwith a peduncle at the anterior end. We found a positive correlation between long eggs and long ovipositorsand confirmed the expectation that eggs of endoparasitoids are generally shorter and narrower than eggs ofectoparasitoids. We were able to locate the sperm entrance or micropyle at the anterior pole of eggs of severalspecies. It is situated at the anterior end of the egg and at the end of the peduncle when present. In addition,the eggshells of the endoparasitoid Sycophila biguttata (Swederus, 1795) (Hymenoptera: Eurytomidae) andthe ectoparasitoid Cecidostiba fungosa (Geoffroy, 1785) (Hymenoptera: Pteromalidae), are for the first timedescribed.

  • 16.
    Vårdal, Hege
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolution, genomik och systematik, Systematisk zoologi.
    Venom gland and reservoir morphology in cynipoid wasps2006Ingår i: Arthropod structure & development, ISSN 1467-8039, E-ISSN 1873-5495, Vol. 35, nr 2, s. 127-136Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The venom apparatus morphology was examined in 25 species of Cynipoidea, representing 11 parasitoid taxa; 12 gall inducers and two inquilines. Typically the venom apparatus consists of an oval or bilobed reservoir connected to the ovipositor apparatus by a very short venom duct at the anterior end and to a single elongate unbranched venom gland at or near its posterior end. The Dufour's gland was not found in any of the examined species. The elongate unbranched venom gland and the absence of the Dufour's gland are putative cynipoid synapomorphies. The shape and size of especially the venom reservoir were found to vary considerably within the Cynipoidea. It is typically less prominent in the parasitoid taxa than in the gall inducers. Exceptions include the poppy gallers Barbotinia and Aylax, in which the venom reservoirs were remarkably small and in the rose galler Diplolepis, where only a rudimentary venom apparatus was found. Possible functional and phylogenetic implications of cynipoid venom apparatus features are discussed.

  • 17. Vårdal, Hege
    et al.
    Forshage, Mattias
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för organismbiologi, Systematisk biologi.
    A new genus and species and a revised phylogeny of Stereomerini (Coleoptera, Scarabaeidae,Aphodiinae), with notes on assumedly termitophilic aphodiines2010Ingår i: Zookeys, ISSN 1313-2989, nr 34, s. 55-76Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A new genus and species of Stereomerini, Cheleion malayanum gen. n. and sp. n., are described based on a single specimen from the Malacca peninsula in Malaysia. It is the first stereomerine found on the mainland of the Asian continent. A key to genera of Stereomerini and a phylogenetic estimate of the steteomerines using 24 species representing 7 tribes of Aphodiinae based on 53 morphological characters. The phylogenetic analysis places the new species within the tribe Stereomerini as a sister to the monophyletic group including Adebrattia, Austaloxenella, Bruneixenus, Pseudostereomera and Stereomera. A survey is given of the various taxa of Aphodiinae that are termite and/or ant inquilines, or have been presumed to be so based on morphology, and their phylogeny is discussed.

  • 18.
    Vårdal, Hege
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Hovmöller, Rasmus
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Gallstekeln- en mästerlig manipulatör2018Ingår i: Yrfän, Vol. 1, s. 14-18Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Hur kan en liten insekt manipulera ett stort träd till att bygga ett hus

    fyllt med mat till sin avkomma? Den gåtan finns ännu inget svar på. Men

    genom att studera gallsteklar kan man i alla fall börja få förståelse för dessa

    mästerliga manipulatörers spännande liv.

    Publikationen är tillgänglig i fulltext från 2020-04-01 11:54
  • 19.
    Vårdal, Hege
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolution, genomik och systematik, Systematisk zoologi.
    Nieves-Aldrey, José Luis
    Oak Cynipid morphology and taxonomy: Immature stages of oak gall wasps and their inquilinesIngår i: The Oak Cynipids of the Western PalearcticKapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 20.
    Vårdal, Hege
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolution, genomik och systematik, Systematisk zoologi.
    Sahlén, Göran
    Ronquist, Fredrik
    Morphology and evolution of the cynipoid egg (Hymenoptera)2003Ingår i: Zoological Journal of the Linnean Society, Vol. 139, nr 2, s. 247-260Artikel i tidskrift (Refereegranskat)
  • 21.
    Vårdal, Hege
    et al.
    Department of Systematic Zoology, Evolutionary Biology Centre, Uppsala University, Sweden.
    Sahlén, Göran
    Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), Bio- och miljösystemforskning (BLESS).
    Ronquist, Fredrik
    Department of Systematic Zoology, Evolutionary Biology Centre, Uppsala University, Sweden.
    Morphology and evolution of the cynipoid egg (Hymenoptera)2003Ingår i: Zoological Journal of the Linnean Society, ISSN 0024-4082, E-ISSN 1096-3642, Vol. 139, nr 2, s. 247-260Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We describe gross egg morphology and provide the first data on eggshell ultrastructure in cynipoids (Hymenoptera) based on species representing three distinctly different life histories: internal parasitoids of endopterygote larvae, gall inducers and phytophagous inquilines (guests in galls). We then use existing phylogenetic hypotheses to identify putative changes in egg structure associated with evolutionary life-history transitions. We find four major structural changes associated with the shift from parasitoids laying their eggs inside a host larva to gall inducers laying their eggs in or on plants: (1) from a narrow and gradually tapering gross form to a distinct division into a stout body and a long and thin stalk; (2) from a thin to a thick eggshell; (3) from a flexible to a rigid endochorion; and (4) from crystal bundles with shifting orientation in the exochorion to layers of parallel crystal rods. By contrast, we find no major changes in egg structure associated with the transition from gall inducers to inquilines. Comparison between pre- and post-oviposition eggs of one gall inducer and one inquiline suggests that mechanical stress during the passage through the egg canal gives rise to numerous tiny stress fractures in the boundary separating the exo- and endochorion. In one of the gall inducers, Diplolepis rosae, that end of the egg, which is inserted into the plant, has a specialized and apparently porous shell that may permit chemical exchange between the embryo and the plant. Other structures that could facilitate chemical communication with the host plant through the eggshell were, however, not observed in the eggs of gall inhabitants.

  • 22.
    Vårdal, Hege
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Taeger, Andreas
    Senckenberg Deutsches Entomologisches Institut, Müncheberg, Germany.
    The life of René Malaise: from the wild east to a sunken island2011Ingår i: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 3127, s. 38-52Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A review is presented of the life of the Swedish entomologist René Malaise (1892–1978), the inventor of the “Malaisetrap” and one of the most important 20th Century specialists on sawflies (Hymenoptera: Symphyta)

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