Abstract
In Canada, the order Strepsiptera consists of 27 known species representing five families: Corioxenidae (1 species), Elenchidae (1 species), Halictophagidae (5 species), Stylopidae (15 species), and Xenidae (5 species). These totals represent an increase of 21 species since the 1979 assessment. Half of these species represent unpublished records recently discovered by study of stylopized hosts in museum collections and DNA barcoded species. It is estimated that as many as 19 more species will eventually be discovered in Canada. DNA barcode sequences are available for 4 Canadian species. The fauna of Canada is poorly surveyed and there is a need to fill knowledge gaps with increased examination of museum specimens for stylopized hosts, broader field surveys (including use of pheromone-baited traps), and more effort to obtain DNA samples.
Highlights
The order Strepsiptera, commonly known as twisted-wing parasites, are all endoparasites of other insects, especially those in the orders Hemiptera, Hymenoptera, and Zygentoma (Kinzelbach 1978)
General information about the phylogenetic history of the order was reviewed by Pohl and Beutel (2013), morphology was comprehensively described by Kinzelbach (1971), and various aspects of their biology was summarized by Riek (1970), Kinzelbach (1978), Kathirithamby (2009), and Straka et al (2011)
The ordinal status of this group is well accepted, and the relationship of Strepsiptera to other insect orders has been recently clarified by phylogenomic research which showed that the order is a sister lineage to the Coleoptera (Misof et al 2014)
Summary
The order Strepsiptera, commonly known as twisted-wing parasites, are all endoparasites of other insects, especially those in the orders Hemiptera, Hymenoptera, and Zygentoma (Kinzelbach 1978). Strepsiptera have been often considered rare (Campbell 1979) based on scarcity of collection records; this is only an illusion as recent advances in understanding the biology of this group, including isolation of sex pheromones for some species General information about the phylogenetic history of the order was reviewed by Pohl and Beutel (2013), morphology was comprehensively described by Kinzelbach (1971), and various aspects of their biology was summarized by Riek (1970), Kinzelbach (1978), Kathirithamby (2009), and Straka et al (2011).
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