Identification of larvae and pupae

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29.01.2018 1:04, vidjl

I have a bear Spilosoma lutea bred from exactly the same caterpillar.
How do you distinguish them?

Distinguishing features of D. mendica caterpillars from S. lutea at the last age:
1-in color, lutea is usually of different colors, and most of them are darker than mendica, the latter is lighter, but they are difficult to distinguish.
2 - the exact difference in the upper body pattern. At a young age, lutea may or may not be present, and mendica always has parallel rows of black dots near the tufts of bristles and two dark wide stripes separated by a white line, in the caterpillar mendica, at the last age, the black dots remain and are clearly distinguishable and visible along the entire body, in lutea they usually merge into a clear line. a dark line or barely visible only closer to the head, and the white line may be dark yellow.

This post was edited by vidjl - 29.01.2018 04: 47

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30.01.2018 20:41, insectamo

Thanks !
On hazel (hazel), if correctly identified by the leaf. Maybe this will help somehow.

Hazel, I'm afraid, will not help. Almost all Ametastegia develop on herbaceous plants, with the exception of a couple of species for which hazel is not listed (although anything can be). In addition, the hazel tree for this larva, as far as I understand, is questionable. In addition, the photo is not sharp enough to see the structure of the larva. Plus, the larvae do not feed after the last molt (if the specimen in the photo is at this stage). And also the larvae may accidentally end up on the wrong plants. (although it would be strange to get from grass to a tree, except for very tall grass and a very small tree

.) The fact that it resembles Ametastegia does not mean anything-among the larvae of sawflies there are externally similar even from different families, not to mention genera. It seems to me that there is no need to try to name this specimen in any way, and we will have to limit ourselves to the family Tenthredinidae, a sub-family. Allantinae (this is what you can see in the photo), but no more.

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30.01.2018 22:28, vidjl

Why not pseudocomplana?

These are just my observations, I grew both of them:
1-Complana is usually darker.
2-In pseudocomplana, the black pattern between the warts is slightly pronounced, sometimes quite pale, and slightly different than in complana (these are all my observations).
3-Complana caterpillars have a slight reddish or maroon tint on the back, while pseudocomplana has not seen this, but they generally look lighter.
This is certainly not enough. In 2010, I had local complana and pseudocomplana brought from Krasnodar (collected on Parmelia), I determined them from the caterpillars, at least they wintered, pupated, butterflies came out, and it seems that I was not mistaken. One of the pupae lay for a long time, eventually came out in the following December.

The photo seems to be a darkish caterpillar.

This post was edited by vidjl - 31.01.2018 00: 14

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