Aphids in Oregon - Oestlundiella flava

Moved

… Beatriz Moisset, 26 January, 2013 - 11:49am

Oregon alder aphid

I have only just noticed this. I think that you will find that your Oregon alder aphid is likely to be Oestlundiella flava(Davidson). See http://www.aphidsonworldsplants.info/d_APHIDS_O.htm#Oestlundiella

… Roger Blackman, 25 January, 2013 - 7:09am

Moved

Moved from Aphids.

… Beatriz Moisset, 25 January, 2012 - 10:56am

Comment by John Pearson

"Alder species. There are four species of alder in Oregon, but the bi-colored leaves with a slightly revolute margin suggest this is Red Alder (Alnus rubra)." John Pearson.

Yes, they are different instars. The winged one is an adult, the others are nymphs (2 instars at least); you can see the wing buds.

… Beatriz Moisset, 25 January, 2012 - 10:46am

We have Euceraphis

here but no mucida yet. Maybe Vassili will be able to help with this.

… john and jane balaban, 19 January, 2012 - 5:10pm

Moved for expert attention

Moved from ID Request.

… v belov, 1 July, 2011 - 4:10am

Today I received an email....

from Colin Favret of http://www.aphidnet.org/ (Its primary goal is to inquire into the evolution of aphids, including their classification and modes of speciation. )
"Hi Karen.

It's probably Euceraphis mucida (Fitch). Normally the species feeds on Betula rather than Alnus, but the description fits, and I've seen it on other non-Betula species (such as Amelanchier). If you see it again, please send me some individuals in alcohol!

Best regards,
Colin
Colin Favret
Université de Montréal
Biodiversity Centre"

… Karen Anthonisen Finch, 19 January, 2012 - 2:36pm

http://www.aphidsonworldsplants.info/x_APHIDS_E.htm

This website describes the Euceraphis mucida.

"Euceraphis mucida (Fitch) Adult viviparae are pale green to yellow-green with an orange-brown thorax and dark tibiae coated with blue-grey wax..."

… Karen Anthonisen Finch, 19 January, 2012 - 3:02pm

Trillium Lake at foothill of Mt. Hood

I have more photos of the insects/bush/tree, if needed.

… Karen Anthonisen Finch, 1 July, 2011 - 7:42am