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Photo#1719875
nymphs on spruce tree bark watched by bald-faced wasps

nymphs on spruce tree bark watched by bald-faced wasps
Grand Rapids, Itasca County, Minnesota, USA
August 30, 2019
Size: grains of rice
I'm sorry the photo was not closer and brighter. The bald-faced wasps were on the branches and flying around these nymphs. I'm not sure the wasps are eating them; maybe. It appears more like they are guarding them. Unusual.

Regards,
Diana Lieffring

Aphids
The wasps were probably going for the honeydew produced by the aphids.

 
Wasps and Aphids
Thank you, T. Hedlund. I did not know those were aphids. They are huge for aphids. Do you know what kind of aphids these are? I'm only familiar with the little green ones that suck the life out of my lupine!

Diana

 
Can't tell with this image.
The giant aphids, including giant bark aphids, are in the family Lachninae. That is probably what these are. The most common genus on Spruce is Cinara, but there are many species that colonize Picea spp.

http://www.aphidsonworldsplants.info/C_HOSTS_Pic_Pin.htm?LMCL=Vkp35e#Picea

https://influentialpoints.com/Gallery/Cinara_aphids.htm

This is not unusual at all, a lot of aphids are ant attended, and I've seen a number of other Hymenoptera flying around colonies to get honeydew.

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