Infestation, oak dies. SE Kazakhstan, Alma Ata

Community and Forum → How to get rid of insects → Infestation, oak dies. SE Kazakhstan, Alma Ata

Mylabris, 06.06.2020 18:05

Dear colleagues!
I have been observing a sad picture for almost a month now - all the oaks in Alma-Ata were attacked by some miners. Everything is 100% of the trees seen, from young to quite old. The foliage is also all affected, I did not see normal green leaves - there are traces of mining everywhere.
Today I picked up some leaves on the way, took them off as best I could through binoculars. Since I'm no longer "on beetles" I have no idea what kind of pest it is. I tried a week ago to collect leaves to get imago-but all equally successfully dried up. The most interesting thing is that the oak is an introduced breed, but this is only observed this year.
PS. I can't attach a photo in the subject line, although the size and extension correspond to the rules. I'll try to attach it in the following messages.

Comments

Likes: 1

06.06.2020 19:40, Dmitrii Musolin

Miner specialist Natalia Kirichenko writes:

Good afternoon!

Indeed, mines can be similar to those of the oak broadmint moth.
However, it is a sawfly. I registered a mass of similar mines in Omsk several years ago. I subjected the samples to DNA barcoding and identified them as Profenusa pygmaea.
Larvae (false larvae) in the photo on the forum-before pupation-the scutes on the thoracic segments are almost invisible. And so here is such a variety at different ages:

https://bladmineerders.nl/parasites/animali...-pygmaea-larva/

Mines:

https://bladmineerders.nl/parasites/animali...fenusa-pygmaea/
In Alma-Ata, it is very similar in the photo to the same view.

If you have any questions, you can email me (I work on mining insects in the Asian part of Russia): nkirichenko et yahoo.com

All the best,

Natalia Kirichenko (Krasnoyarsk)"

Likes: 1