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From hair pin to safety pin: evolution of the ovipositor apparatus in Orussidae (Insecta: Hymenoptera)

  • Lars VilhelmsenEmail author
Original Paper
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Abstract

Orussidae, a small family of parasitoid wasps targeting woodboring insect larvae, are characterized by having the ovipositor apparatus invaginated in the body and operated by a mechanism unique among Hymenoptera. The first and second valvulae when not in use lie in an invaginated ovipositor sack extending forward throughout the abdomen and thorax. During oviposition, the valvulae are extended and retracted by a combination of small median apodemes on the anterior margin of abdominal sterna 3–7 gripping and releasing the ovipositor, and rocking motions of the sterna. Females representing different genera of Orussidae were examined by dissection and SEM, revealing overall similarity of the ovipositor system and its inferred mode of operation in a larger sample across the family, but also variation between genera in the way the ovipositor is accommodated. This includes differences in the prophragma, profurca and the internal part of the mesonotum where the anterior loop of the ovipositor is stored, and the shape of the loop itself which occurs in two configurations: simple hair pin-like bend or whorled, safety pin-like. The former is putatively the plesiomorphic condition in Orussidae, the latter possibly having evolved more than once to accommodate a longer ovipositor. Selected features in the ovipositor apparatus are mapped and discussed in the context of recent phylogenetic hypotheses for the family.

Keywords

Parasitoid wasps Ovipositor anatomy Functional morphology Wood-living insects 

Notes

Acknowledgements

Daniele Baiocchi, Fabrizio Turrisi, Braet Yves, and Dave Smith all provided valuable material for the present study. Simon van Noort gave permission to include images from https://www.wasp.org. Two anonymous referees provided useful comments to the submitted version of the paper.

Compliance with ethical standards

Conflict of interest

The author declares no conflict of interest.

Ethical approval

No animals were harmed during the production of this paper. The study was based entirely on dead specimens deposited in zoological collections.

References

  1. Austin AD, Browning TO (1981) A mechanism for movement of eggs along insect ovipositors. Int J Insect Morphol 10:93–108CrossRefGoogle Scholar
  2. Blank SM, Vilhelmsen L (2016) Two new parasitoid wasp species of the Australasian genus Orussobaius (Hymenoptera: Orussidae). Arthropod Syst Phylogeny 74:83–103Google Scholar
  3. Cerkvenik U, Dodou D, van Leuwen JL, Gussekloo SWS (2019) Functional principles of steerable multi-element probes in insects. Biol Rev Cambridge Philos Soc 94:555–574.  https://doi.org/10.1111/brv.12467 CrossRefPubMedGoogle Scholar
  4. Cooper KW (1953) Egg gigantism, oviposition, and genital anatomy: their bearing on the biology and phylogenetic position of Orussus (Hymenoptera: Siricoidea). Proc Rochester Acad Sci 10:38–68Google Scholar
  5. Quicke DLJ, Fitton MG, Tunstead JR, Ingram SN, Gaitens PV (1994) Ovipositor structure and relationships within the Hymenoptera, with special reference to the Ichneumonoidea. J Nat Hist 28:635–682CrossRefGoogle Scholar
  6. Rahman MH, Fitton MG, Quicke DLJ (1998a) Ovipositor internal microsculpture in the Braconidae (Insecta, Hymenoptera). Zool Scr 27:319–331CrossRefGoogle Scholar
  7. Rahman MH, Fitton MG, Quicke DLJ (1998b) Ovipositor internal microsculpture and other features in doryctine wasps (Insecta, Hymenoptera, Braconidae). Zool Scr 27:333–343CrossRefGoogle Scholar
  8. Rohwer SA, Cushman RA (1917) Idiogastra, a new suborder of Hymenoptera with notes on the immature stages of Oryssus. Proc Entomol Soc Wash 19:89–98Google Scholar
  9. Vilhelmsen L (2000) Cervical and prothoracic skeleto-musculature in the basal Hymenoptera (Insecta): comparative anatomy and phylogenetic implications. Zoologischer Anzeiger 239:103–136Google Scholar
  10. Vilhelmsen L (2003) Phylogeny and classification of Orussidae (Insecta: Hymenoptera), a basal parasitic wasp taxon. Zool J Lin Soc 139:337–418CrossRefGoogle Scholar
  11. Vilhelmsen L (2004) The old wasp and the tree: fossils, phylogeny and biogeography in the Orussidae (Insecta, Hymenoptera). Biol J Lin Soc 82:139–160CrossRefGoogle Scholar
  12. Vilhelmsen L, Turrisi GF (2011) Per arborem ad astra: morphological adaptations to exploiting the woody habitat in the early evolution of the Hymenoptera. Arthropod Struct Dev 40:2–20CrossRefGoogle Scholar
  13. Vilhelmsen L, Zimmermann D (2014) Baltorussus total makeover: rejuvenation and sex change in an ancient parasitoid wasp lineage. PLoS ONE 9:e98412CrossRefGoogle Scholar
  14. Vilhelmsen L, Isidoro N, Romani R, Basibuyuk HH, Quicke DLJ (2001) Host location and oviposition in a basal group of parasitic wasps: the subgenual organ, ovipositor apparatus, and associated structures in the Orussidae (Hymenoptera, Insecta). Zoomorphology 121:63–84CrossRefGoogle Scholar
  15. Vilhelmsen L, Blank SM, Costa VA, Alvarenga TM, Smith DR (2013) Phylogeny of the ophrynopine clade revisited: review of the parasitoid sawfly genera Ophrella Middlekauff, Ophrynopus Konow and Stirocorsia Konow (Hymenoptera: Orussidae). Invertebr Syst 27:450–483CrossRefGoogle Scholar
  16. Vilhelmsen L, Blank SM, Sechi D, Ndiaye MM, Niang AA, Guisse A, van Noort S (2017) The Orussidae (Insecta: Hymenoptera) of Africa. Proc Entomol Soc Washington 119(Special Issue):879–930CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Natural History Museum of Denmark, SCIENCEUniversity of CopenhagenCopenhagenDenmark

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