-- NicoleFisher - 08 Nov 2010

Selitrichodes sp.2 (from Brisbane)


Introduction

is Casuarina beneficial or invasive .....

-- NicoleFisher - 09 Nov 2010
 

Pictures



colony 7 days after adults introduced. Photo taken by B.Brown leaf galls bulbs colony. Photo taken by B.Brown Quadrastichus sp. - possible biocontrol of the gall former in Guam. Photo taken by B.Brown bulb gall in colony plant. Photo taken by B.Brown



There are 4 images.

Distribution

This wasp has been found infesting Casuarina glauca in Brisbane, Australia at the USDA, Australian Biological Control Lab's.

We do find them at many of our field sites along the south east coast (of Queensland) - Brown, October 2010

Material sent from Brown :

2009071V072-73 : Quadrastichus sp. (Might be of interest to Aubrey who is looking at biocontrol of the gall former in Guam.) - La Salle, Oct.2010

ABCL 2009071.V074 - 1 male Tamarixia

ABCL 2009071.V075 - 1 female Selitrichodes

ABCL 2009071.V076 - 100 - many female Selitrichodes

ABCL 2009071.V101-107 - 5 female, 1 male Tamarixia

 

Parasitoids


 

Hosts


 

Damage

Damage Survey of Casuarina glauca reared in Brisbane, Australia

Methods

We have been keeping a culture of the wasps (Selitrichodes sp.2) for over a year now. They seem to cause this galling, (picture above of 7 day old galls). These seem to look the same as the one infesting Casuarina in Guam. - Brown, October 2010
Results


 

DNA sequences

because there is a bit of a concern over the fact that these look so similar, I just gave over a few specimens of Selitrichodes to get DNA barcodes - each of these two casuarina "species", plus S. globulus, S. kryceri, and another as yet undescribed species that attacks Leptocybe. So, this should help to inform the decision as to whether this is one or two species, how much variation there is between the two casuarina things, how this compares to variation between other Selitrichodes species. Like you say - the gall forms may be from the same species on different Casuarinas (can we get species names on both of them?), or may represent different wasps. I have even known the same wasp species to produce two different morphology galls on the same plant - depending on what part of the plant it attacked. - La Salle, November 2010

-- NicoleFisher - 09 Nov 2010
 

References

J. La Salle, G. Arakelian, R.W. Garrison & M.W. Gates. 2009. A new species of invasive gall wasp (Hymenoptera: Eulophidae: Tetrastichinae) on blue gum (Eucalyptus globulus) in California. Zootaxa 2121: 35–43 : pdf

G. Taylor, A. Austin, J. Jennings, M.Purcell & G. Wheeler. 2010 . Casuarinicola, a new genus of jumping plant lice (Hemiptera: Triozidae) from Casuarina (Casuarinaceae). Zootaxa, 2601:1-27.pdf


 

I Attachment Action Size Date Who Comment
2009071V072-73_Sp2_wasps1.jpgjpg 2009071V072-73_Sp2_wasps1.jpg manage 865 K 2010-11-09 - 19:44 NicoleFisher Quadrastichus sp. - possible biocontrol of the gall former in Guam. Photo taken by B.Brown
2009071_MC271_colony_7_days_after_adults_introduced1.jpgjpg 2009071_MC271_colony_7_days_after_adults_introduced1.jpg manage 1 MB 2010-11-09 - 20:13 NicoleFisher colony 7 days after adults introduced. Photo taken by B.Brown
2009071_MC271_leaf_galls_bulbs_colony2.jpgjpg 2009071_MC271_leaf_galls_bulbs_colony2.jpg manage 610 K 2010-11-09 - 20:05 NicoleFisher leaf galls bulbs colony. Photo taken by B.Brown
LaSalle_et_all_blue_gum.pdfpdf LaSalle_et_all_blue_gum.pdf manage 401 K 2010-11-09 - 18:52 NicoleFisher  
MC271_2009071_Leaf_bulb_gall_in_colony_plant1.jpgjpg MC271_2009071_Leaf_bulb_gall_in_colony_plant1.jpg manage 1 MB 2010-11-09 - 20:09 NicoleFisher bulb gall in colony plant. Photo taken by B.Brown
Taylor_et_al_2010_Psyllids_Casuarina.pdfpdf Taylor_et_al_2010_Psyllids_Casuarina.pdf manage 2 MB 2010-11-12 - 10:32 NicoleFisher