Glabridorsum stokesii

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{{Short description|Species of wasp}}
{{Speciesbox
|image = Glabridorsum stokesii 39576728.jpg
|genus = Glabridorsum
|species = stokesii
| display_parents = 3
|authority = [[Peter Cameron (entomologist)|Cameron]], 1912<ref name="Cameron">{{Cite Q|Q56011915}}</ref>
|synonyms=
*''Gambrus stokesii'' {{small|Cameron, 1912}}
*''Ischnus stokesii''
}}

'''''Glabridorsum stokesii''''' is a species of [[parasitoid wasp]] belonging to the [[family (biology)|family]] [[Ichneumonidae]] [[Species description|first described]] by [[Peter Cameron (entomologist)|Peter Cameron]] in 1912, known to be a generalist parasite of species including crop pest species such as the [[codling moth]] and ''[[Grapholita molesta]]''. The species is native to southeastern [[Australia]], and has been introduced to [[New Zealand]].

==Taxonomy==

The species was originally named ''Gambrus stokesii'' by [[Peter Cameron (entomologist)|Peter Cameron]] in 1912. The species was reclassified as ''Ischnus stokesii'' by [[Henry Keith Townes]], Marjorie Chapman Townes V. K. Gupta in 1961; reclassified a second time as ''Glabridorsum stokesii'' in 1970 by Henry Keith Townes.<ref>{{cite web|url=https://biodiversity.org.au/afd/taxa/Glabridorsum_stokesii|title=Species Glabridorsum stokesii (Cameron, 1912) |website=Australian Faunal Directory |access-date=20 April 2024}}</ref>

==Distribution==

The species is native to southeastern [[Australia]]. It was introduced to [[New Zealand]] between 1969 and 1974 as a measure to combat moth species that impacted fruit growing, and successfully established in [[Auckland]] and [[Hawkes Bay]].<ref name="Russell">{{cite Q|Q105740472}}</ref> By the 2020s, the species had become common across both the [[North Island]] and [[South Island]] of New Zealand, and identified in the Australian states of [[Queensland]], [[New South Wales]], [[Victoria (state)|Victoria]] and [[Tasmania]].<ref>{{Cite GBIF|id=1306993|taxon=Glabridorsum stokesii|access-date=20 April 2024}}</ref>

Between 1932 and 1939, attempted introductions of ''Gambrus stokesii'' were conducted in the [[United States]] as a part of pest control programmes, however the species failed to establish.<ref name="Russell"/>

==Description==

Below is Cameron's original description:

{{quote|Black; abdominal petiole red except at apex; face, clypeus, basal half of mandibles, palpi, the orbits all round, more broadly on the malar space, the yellow there extending to the base of mandible, a broad line on sides of pronotum, inwardly extending to shortly beyond the base of the parapsidal furrows, a mark on apex of middle lobe, twice longer than wide, the base round, the apex transverse, scutellum, the apical slope of metanotum, the top gradually narrow from the outerside, tubercles, a longish triangular line on lower basal half of proplevirae, a large spot on base of mesopleurae, the top bluntly rounded, thence becoming, on the apical side, gradually widened to near the bottom, which projects into a square, the usual mark below the hind wings, a large triangular mark, the narrowed end above, on the metapleurae and the apices of all the abdominal segments, whitish-yellow. The eighth to fourteenth antennal joints white. Wings hyaline, stigma and nervures dark fuscous, the former darker in front, areolet narrowed in front, as wide there as that bounded by the recurrent and second transverse cubital nervures, the recurrent received at the base of the apical third. Pro- and mesothorax smooth, furrows crenulated, the parapsidal weakly so, sternal more strongly, the part immediately below tegulae to the yellow mark striated, the striae continued down the upper half of the furrow. Base of metanotum weakly, sparsely punctured, the rest rather strongly, weakly reticulated; second transverse keel weaker than the basal. Abdomen smooth and shining, except the second segment, which is opaque and aciculated.<ref name="Cameron"/>}}

Cameron's female holotype measured {{cvt|7|mm}} in length, and was found in [[Glen Innes, New South Wales]] in January, laying eggs in weevil larvae.<ref name="Cameron"/>

==Behaviour==

''Glabridorsum stokesii'' is a generalist parasite,<ref>{{Cite journal| issn = 1320-6133| volume = 31| issue = 1| pages = 5–12| last = Bashford| first = R| title = The insects associated with galls formed by 'Trichilogaster acaciaelongifoliae' (Froggatt) (Hymenoptera: Pteromalidae) on 'Acacia' species in Tasmania| journal = The Australian Entomologist| date = 2004}}</ref> known to be a parasite of the [[codling moth]] and ''[[Grapholita molesta]]'', the oriental fruit moth.<ref name="Russell"/>

==Parasites==

''Glabridorsum stokesii'' is a host to two species of parasitoid wasp, ''[[Gelis cinctus]]'' and ''[[Gelis tenellus]]''.<ref>{{Cite Q|Q105740471}}</ref>

==Gallery==
<gallery widths="200px" heights="140px">
Glabridorsum stokesii 189959090.jpg|''Glabridorsum stokesii'' found near [[Wellington]], New Zealand
Glabridorsum stokesii 60760372.jpg|Specimen of ''Glabridorsum stokesii'' captured in [[Lincoln, New Zealand|Lincoln]], New Zealand
Glabridorsum stokesii 61309614.jpg|''Glabridorsum stokesii'' found in the [[Waitākere Ranges]], [[Auckland Region]], New Zealand
</gallery>


==References==
{{Reflist}}

{{Taxonbar |from=Q2020799}}

[[Category:Ichneumonidae]]
[[Category:Hymenoptera of Australia]]
[[Category:Hymenoptera of New Zealand]]
[[Category:Insects described in 1912]]
[[Category:Taxa named by Peter Cameron]]
[[Category:Introduced species]]

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