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Meteorus acerbiavorus sp. nov. (Hymnoptera, Braconidae), a gregarious parasitoid of Acerbia alpina (Quensel) (Lepidoptera, Arctiidae) in North Finland
Stockholm University, Faculty of Science, Department of Zoology.
2011 (English)In: Journal of Natural History, ISSN 0022-2933, E-ISSN 1464-5262, Vol. 45, no 21-24, 1275-1294 p.Article in journal (Refereed) Published
Abstract [en]

The new gregarious parasitoid Meteorus acerbiavorus sp. nov. (Hymenoptera, Braconidae) was reared from the cocoons of Acerbia alpina (Quensel) (Lepidoptera, Arctiidae) in north-western Finnish Lapland. This species belongs to Meteorus rubens (Nees) species group and differs from the most related M. rubens in the following features: the eyes densely setose; the median lobe of the mesos- cutum, scutellum, mesopleuron, and the hind coxa entirely or at least partly rugulose-granulate or rugose-areolate and sometimes with granulation; the ovipos- itor subapically with distinct dorsal node; the ventral borders of the first metasomal tergum weakly separated by narrow space in its basal half; the colour of the body and legs mostly or entirely dark; the fore wing more or less darkened. Phylogenetic relationships among several Meteorus species close to M. rubens including new M. acerbiavorus were investigated based on DNA sequence fragments of the mito- chondrial COI and the nuclear 28S rDNA genes. The discussions on the species groups of Meteorus, on distribution of Acerbia alpina in the Holarctic and on its known parasitoids are presented.

Place, publisher, year, edition, pages
2011. Vol. 45, no 21-24, 1275-1294 p.
Keyword [en]
Braconidae, Hymenoptera, Meteorus, gregarious parasitoid of Arctiidae, new species, DNA analysis, result
National Category
Zoology
Research subject
Systematic Zoology
Identifiers
URN: urn:nbn:se:su:diva-62450DOI: 10.1080/00222933.2011.552807ISI: 000290207700002OAI: oai:DiVA.org:su-62450DiVA: diva2:441917
Available from: 2011-09-19 Created: 2011-09-19 Last updated: 2017-12-08Bibliographically approved
In thesis
1. Hidden Creatures – systematics of the Euphorinae (Hymenoptera)
Open this publication in new window or tab >>Hidden Creatures – systematics of the Euphorinae (Hymenoptera)
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Parasitic wasps constitute one of the last remaining frontiers in the charting of animal diversity. The Braconidae is the second most species-rich family of parasitic wasps; the world fauna has been estimated at 40 000 species and the Swedish fauna is believed to include a little more than 2 000 species, 1 200 of which are currently documented. This thesis is a contribution to the rapidly increasing knowledge of braconid diversity. In paper I, a new gregarious parasitoid, Meteorus acerbiavorus sp. nov. (Braconidae: Eupohrinae), is described from specimens reared from the cocoons of the butterfly Acerbia alpina (Quensel) (Lepidoptera, Arctiidae) in northwestern Finnish Lapland. Based on a molecular phylogenetic analysis, the new species is shown to belong to the M. rubens species group. In the second paper, the Western Palearctic fauna of the tribe is revised, seven new species are described and a key to the Western Palearctic species is presented. Two molecular markers, 28S and COI, are used to study phylogenetic relationships in the tribe. The molecular results showed that the Meteorini fall into four well supported clades. The results also reveal a considerable cryptic species diversity. The third paper deals with distributional, phenological and in many cases rearing data from nearly 2 500 specimens (44 species) of the Meteorini in the collection of the National Museums of Scotland (NMS), Edinburgh. Patterns in the breadth of host ranges are discussed in relation to a reiterated speciation hypothesis. Paper IV examines the phylogenetic relationships of the entire subfamily Euphorinae based upon four gene regions (18S, CAD, 28S D2, and COI). A revised classification of the Euphorinae is proposed that recognizes 55 genera and 14 tribes. Our study shows that early members of the Euphorinae were parasitoids of coleopteran larvae, with a host shift to larval Lepidoptera, adult or immature hosts in the Hemiptera, Hymenoptera, Neuroptera, Orthoptera and Psocoptera.

Place, publisher, year, edition, pages
Stockholm: Department of Zoology, Stockholm University, 2013. 40 p.
Keyword
Parasitic wasps, Braconidae, Euphorinae, systematics, phylogeny, molecular taxonomy, cryptic species, evolution, host preferences, identification keys
National Category
Zoology
Research subject
Systematic Zoology
Identifiers
urn:nbn:se:su:diva-87904 (URN)978-91-7447-605-7 (ISBN)
Public defence
2013-05-17, Lilla hörsalen, Naturhistoriska riksmuseet, Frescativägen 40, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: In press. Paper 4: Manuscript.

Available from: 2013-04-25 Created: 2013-02-24 Last updated: 2013-04-15Bibliographically approved

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