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Damage to lilac leaves

Community and Forum → Insects biology and faunistics → Damage to lilac leaves

Archypus, 21.12.2008 15:41

Passing once on a street in Moscow, I saw this picture: the leaves of young lilac bushes growing in the garden in front of the house were completely gnawed on the edge by some insect. After examining a few plants, I found no one - it was the beginning of October and, perhaps, the leaves were eaten long before this event. But who could it be? The first thing that came to mind is the caterpillar of some butterfly, M. B. lilac hawk moth, is this possible? Who else eats lilacs? I took a picture with my phone camera, but it wasn't very clear, because it was overcast.

Pictures:
picture: DSC00066.JPG
DSC00066.JPG — (65.68к)

Comments

22.12.2008 0:17, omar

I think it's beetles.

22.12.2008 0:47, Fornax13

Maybe Lytta vesicatoria is just right.

This post was edited by Fornax13-22.12.2008 00: 47

22.12.2008 22:01, omar

I don't think so. This is not such a mass-produced species as you have. In the Moscow region, the species is rarely found. As well as in Moscow.
Likes: 1

22.12.2008 22:26, Pirx

These are weevils, they eat up in little bays like this. I don't remember the type, the book is at work, but I think you'll find it in the literature.

23.12.2008 0:29, Archypus

If it were a poplar, there would be much more applicants, and the question may not have arisen, but lilac... The idea about the spank is interesting (I'm not surprised at anything anymore), but it's really rare near Moscow, I've never seen it myself, and I only know about it from literary sources. And why the beetles? what are the signs of this? can leaf beetles what? And what about the lilac hawk moth? Are such bites characteristic of butterfly caterpillars?

23.12.2008 10:24, amara

According to Figure b Gusev 1951, the Shpanskaya fly (June, July) leaves a different pattern of eating, deeper, irregular, sometimes deep to venation (the figure given is true for another shrub, not for lilac), and then there are Wasp-shaped sawfly, or caterpillars of Lilac Hawk moth or Lilac moth. For them, there are no drawings of leaf damage (they are determined by themselves).

23.12.2008 11:24, Alexandr Rusinov

Well, on the lilac hawk moth, these bites definitely do not pull, the hawk moth caterpillar leaves only a petiole from the leaf with the remains of the central vein, and the lilac hawk moth develops more often not on lilac, but on ash.

23.12.2008 17:27, Fornax13

It may be Otiorhynchus smreczynskii Cmol. It eats lilacs at night, buries itself in the litter during the day. Apparently, he lives a lot of places, but not much was collected. For the Spanish fly, really very neat nibbles, as well as for large caterpillars.

This post was edited by Fornax13-23.12.2008 17: 29

24.12.2008 3:48, Archypus

Yes, they don't look like lilac, I agree. This means that the number of suspected pests with this form of biting is reduced to two or three types. I will also note that the number of species in the hearth was apparently quite high. The area of the hearth was nesk. tens of m2, on it approx. a dozen lilac bushes with approximately the same degree of damage. How could a damned weevil do such a thing? Although many otiorhynchae feed at night, leaving characteristic bites (I recall how M. Tsurikov found asphaltinus precisely from damaged leaves of bushes), what should be the number of individuals to shovel such an amount of green mass? It seems to me more convincing - a mass brood of Apeira syringaria or Tenthredo vespa, but to say for sure, you will need to watch these bushes in the next season

24.12.2008 5:32, RippeR

I've also seen similar bites here. It's strange who it could be.
I am most attracted to the options with a Spanish fly, and even more with sawflies - sometimes the larvae are in a large number, although I do not remember that on lilacs.
Pogryzy remind dolgonosovsky, but really something pogryzov a lot too much..

24.12.2008 11:21, Konung

no, the nibbles are clearly not tracked... rather sawflies, I found sawfly larvae on lilac trees

28.12.2008 23:31, Pirx

About the Spanish fly - the version is wow, normal. She eats ash so much in the Azov Sea region that there is a rustle in the oak grove. And lilac and ash are relatives, from the same family, Oleaceae. The nibbles are really more like beetles, the caterpillars and larvae of sawflies do not gnaw in the same way as according to MY observations. But how many Don Pedro's are there in Brasili? Although, if it was happening in (on) Ukraine, I would still insist on the version of weevils, they eat lilacs in this way, and in the mass. Even recorded as pests of ornamental green spaces.

29.12.2008 0:55, Archypus

I think all versions have the right to life. To find the culprit of this detective story, you need to wait for the summer, so I invite everyone, especially from central Russia, to take part in the investigation next season. I want to ask another question from the "Who could it be" series soon, but I just need to take a good photo...

29.12.2008 1:25, Fornax13

In the south of the ETR (if you believe the damage descriptions) so the lilac is eaten by Otiorhynchus smreczynskii. In principle, in the middle lane, this view is also available. It is known from the region, and it seems to be collected only within the city limits. It's hard to catch, but that's probably why it's considered rare.
Well, let's wait for the summer...

29.12.2008 12:38, Victor Titov

I have seen exactly the same bites on lilac leaves repeatedly in the Yaroslavl region. Do you want to walk around with a flashlight at night next summer? confused.gif

29.12.2008 13:47, omar

Otiorhynchus smreczynskii is found in the Moscow region quite often than the Spanish fly. I didn't come across it, but there are specimens of this species with the definition of Grachev in the museum. Yes, and pogryzy, in principle, are exactly the same as those left by short-nosed elephants.

29.12.2008 18:44, amara

Here is a photo of leaves damaged by the lilac root weevil in America (Otiorhynchus meridionalis), although only apple leaves.
http://jenny.tfrec.wsu.edu/opm/gallery.php?pn=655
Likes: 2

02.01.2009 17:01, Archypus

Yes, very similar.

01.09.2009 8:46, Alexandr Rusinov

Recently, I began to notice the same bites on the lower branches of lilacs in Yaroslavl near my home. Every day there were more and more nibbles. It became clear that it was necessary to smile.gifdevelop a special operation plan and armed with special equipment-a net, I captured the intruders at dusk (approximately 22-00). The method was simple-mowing the lower branches with a net. The operation was marked by a complete success - about a dozen otiorinhus of suspicious appearance were capturedsmile.gif.I attach the photo of the detainee. If anyone knows what exactly this type is, please write, I don't want to dig into the identifier yet.
Dolbonosic.jpg
Likes: 7

01.09.2009 8:49, Fornax13

Ага, Otiorhynchus smreczynskii smile.gif
Likes: 5

05.09.2009 21:17, Victor Titov

So, inspired by the success of the operation brilliantly carried out by Anthrenus, 10 minutes ago I armed myself with a net and went out into the courtyard of my house, where the characteristic leaf bites were also noticeable on the lower branches of the lilac bushes. As a result, about a dozen Otiorhynchus smreczynskii were sent to the staining department.
Likes: 3

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