Troldhojvej 3

Olsted, Denmark

Troldhojvej 3

Olsted, Denmark

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Veenakumari K.,National Bureau of Agriculturally Important Insects | Buhl P.N.,Troldhojvej 3 | Mohanraj P.,National Bureau of Agriculturally Important Insects
International Journal of Environmental Studies | Year: 2013

Two new species, Trichacoides ranganabettensis sp. nov. Veenakumari & Buhl and Platygaster neostriatitergitis sp. nov. Veenakumari & Buhl are described from South India. The unknown female of Isolia indica is also described. © 2013 © 2013 Taylor & Francis.


Veenakumari K.,National Bureau of Agriculturally Important Insects | Buhl P.N.,Troldhojvej 3 | Mohanraj P.,National Bureau of Agriculturally Important Insects | Khan F.R.,Qassim University
International Journal of Environmental Studies | Year: 2013

Three new species of Allotropa are described from India. Allotropa gundlupetensis is found to parasitise the Madeira mealybug, Phenacoccus madeirensis, a newly introduced pest of cotton in India. © 2013 Copyright Taylor and Francis Group, LLC.


Duso C.,University of Padua | Boaria A.,University of Padua | Surian L.,University of Padua | Buhl P.N.,Troldhojvej 3
Annals of the Entomological Society of America | Year: 2011

The Nearctic gall midge Obolodiplosis robiniae (Haldeman, 1847) (Diptera Cecidomyiidae) infesting black locusts, Robinia pseudoacacia L. (Fabaceae), was detected in Asia in 2002 and in Europe (first in Italy) in 2003. Its distribution in Europe has expanded dramatically, probably favored by extensive distribution of its host plant along the main routes. The results of a 3-yr study on the seasonal abundance of O. robiniae in northern Italy are reported here. O. robiniae can develop three to four generations per year by exploiting plants of different ages and vigor. Overwintering takes place as diapausing larvae and adults emerge in spring. Two generations are completed on mature plants where populations decline in summer. Two additional generations can develop on root suckers from midsummer onward. Pest population densities reach their highest levels in late spring. Gall midge larvae were attacked by various predators, but parasitism by the platygastrid Platygaster robiniae Buhl & Duso was particularly significant. The impact of parasitism by P. robiniae is indicated as a key factor in reducing O. robiniae population densities. © 2011 Entomological Society of America.


Chavalle S.,Walloon Agricultural Research Center | Buhl P.N.,Troldhojvej 3 | Censier F.,University of Liège | De Proft M.,Walloon Agricultural Research Center
Crop Protection | Year: 2015

The orange wheat blossom midge, Sitodiplosis mosellana (Géhin) (Diptera: Cecidomyiidae), is a wheat (Triticum aestivum L.) pest that can cause significant yield losses. Several hymenopterous parasitoids are known to attack S.mosellana. For the effective biological control of this pest by its parasitoids, the host-parasitoid synchrony is particularly important. The synchronization between the emergence of S.mosellana and its parasitoids was studied under controlled conditions with soils sampled from two locations. For both sites, three parasitoid species were identified: Macroglenes penetrans (Kirby) (Hymenoptera: Pteromalidae), Euxestonotus error (Fitch) (Hymenoptera: Platygastridae) and Platygaster tuberosula (Kieffer) (Hymenoptera: Platygastridae). The hypothesis that parasitoid emergence is triggered by the same rainfall that induces host emergence was tested by simulating three rainfall events, a week apart. The parasitoid M.penetrans emerged later than S.mosellana with a mean of 57±7 DD (degree-days above 7°C) for insects collected from Juprelle and 68±10 DD for those from Veurne (i.e., 4-5 days after its host). M.penetrans was therefore closely synchronized with its host through the same inductive rainfall, but this was not the case for E.error or P.tuberosula. Depending on when the rainfall that triggered the emergence of S.mosellana occurred, E.error and P.tuberosula emerged either before or after their host. M.penetrans is a more effective biocontrol agent of S.mosellana compared to P.tuberosula and E.error. Greater knowledge about parasitoid emergence could lead to the better positioning of insecticide treatments against wheat midge that protect and conserve the parasitoid populations. © 2015 Elsevier Ltd.


Buhl P.N.,Troldhojvej 3 | Jaloszynski P.,Wrocław University
Annales Zoologici | Year: 2016

Two new species of Platygastrinae (Hymenoptera: Platygastridae) are described, based on specimens collected in Europe: Metaclisis semistriata sp. Nov. (Austria) and Platygaster polonica sp. Nov. (Poland). A female and two males of Synopeas burgeri Buhl, 2012, a species known so far from a single female collected in Germany, are recorded from Poland and male characters of this species are described and illustrated for the first time. Comparative notes on similar taxa are given. © Museum and Institute of Zoology PAS.


PubMed | Natural History Museum in London and Troldhojvej 3
Type: | Journal: Biodiversity data journal | Year: 2016

A revised checklist of the British and Irish Platygastroidea (Platygastridae) substantially updates the previous comprehensive checklist, dating from 1978. Distribution data (i.e. occurrence in England, Scotland, Wales, Ireland and the Isle of Man) is reported where known.A total of 381 British and Irish Platygastroidea represents a 47% increase on the number of British and Irish species reported in 1978.


Buhl P.N.,Troldhojvej 3
International Journal of Environmental Studies | Year: 2011

The following 31 species are described as new to science: Allostemma quadrum, Amblyaspis breviscutellaris, Am. vilhelmseni, Ceratacis latimarginata, C. projecta, C. punctatoventis, Leptacis adiaphana, L. alpina, L. arcuata, L. claviger, L. fuscalata, L. grandiclava, L. microalata, L. moa, L. pallidipetiolata, L. recticauda, L. vicina, Metanopedias novaezealandiae, Piestopleura rubripes, Platygaster ater, Pl. fuscalis, Pl. novaezealandiae, Pl. solodovnikovi, Pl. tuberculatrix, Synopeas novaezealandiae, Zelandonota bidentata, Zela. dorsipunctata, Zela. rufiscutum, Zela. vilhelmseni, Zelostemma altipetiolata, and Zelo. dromedarium. © 2011 Copyright Taylor and Francis Group, LLC.


Twenty-nine species new to science are described on the basis of material collected in Togo, viz. Ace rotella tschirnhausi, Amblyaspis tschirnhausi, Ceratacis afrotropica, Euxestonotus (Cylindrostonotus subg. n.) lissogastrus, Fidiobia flicornis, F. semirufa, F. tschirnhausi, Inostemma tschirnhausi, Leptacis cylin drica, L. elongaticeps, L. nigrotrochanterica, L. quadrilineata, L. sensillosa, L. togoensis, L. trili neata, L. tschirn-hausiana, Platygaster danyiensis, P. liga, P. lobata, P. otandjoboliensis, P. planivertex, P. suban guliceps, P. tricarinata, P. tschirnhausi, Synopeas basipubens, S. meieri, S. togoense, S. tschirnhausi, and S. watsoni. New records from Togo of 22 known species are given.


Popovici O.A.,Al. I. Cuza University | Buhl P.N.,Troldhojvej 3
Journal of Natural History | Year: 2010

The West Palaearctic species of the genus Fidiobia are reviewed. Two new species, Fidiobia gordoni sp. nov. and Fidiobia hispanica sp. nov., are described; Fidiobia synergorum (Kieffer, 1921), Fidiobia polita Buhl, 1998, Fidiobia pronotata Szabo, 1958, Fidiobia rugosifrons Crawford, 1916 and Fidiobia hofferi Kozlov, 1978 are redescribed. Fidiobia polita is new to the Romania fauna. Lectotype is designated for Fidiobia hofferi. A dichotomous key is provided to facilitate the identification of females. Each species is further characterized by a description, and figures and notes are provided on their known distribution and hosts. © 2010 Taylor & Francis.


Buhl P.N.,Troldhojvej 3
New Zealand Entomologist | Year: 2013

Five new species of Platygastrinae (Hymenoptera: Platygastridae), endemic to New Zealand, are described: Amblyaspis pederseniana; Leptacis brachyptera; L. dolichoptera; L. schomannae; and Platygaster politiceps. Further records are given for seven recently described species of Platygastridae. © 2013 The Entomological Society of New Zealand.

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