Identification of Hymenoptera (wasps, bees, ants)

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22.10.2012 10:17, akulich-sibiria

Ectemnius ruficornis, no variants. Only in the female of this species, the lateral teeth of the medial lobe of the platypus are directed not obliquely forward, but precisely to the sides.

I've already posted this one here before. I have it signed. Sometimes, when catching new wasps, you have to double-check what you defined earlier, so the previously defined Crossocerus varus actually turned out to be C. balbipes Dahlb. It's just that when I actually caught varus, it became clear what a narrowed pygidium means, as in the case of balbipes.

This summer I managed to catch several more species of Crabro, males peltarius, scutellatus and it seems exactly sibiricus (from my last photo on 70 pages) checked on Marshakov, 1977, questions still remain on Lestica and another posted copy

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26.10.2012 21:36, Guest

Krasnoyarsk Territory, Krasnoyarsk, Kacha river, in yellow traps. I take it this is exactly Pterocheilus phaleratus ?
The 3rd labial palpel is not pointed, the sides are spaced. segments are rounded.
Alexander, can this species be considered a rare find here, or is it still a fairly common species? I just never met him before.

Interesting. Yes, this is P. phaleratus, and, in my opinion, a nominative subspecies. I am not 100% sure about the subspecies, as I have only one male on hand, and it differs from this exenmplyar by a black back-breech.
The nearest known part of the range is North-Eastern Kazakhstan, so it's not far by Siberian standards. The species is rare everywhere, as it is difficult to catch it (we have 2 specimens in the Crimea for every ten thousand other eumenins).
Probably they are there in the sands along the river and nest, should be caught more. They rarely get caught in nets, as they do not fly to the water, where everyone usually moose wasps.

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27.10.2012 9:40, akulich-sibiria

Interesting. Yes, this is P. phaleratus, and, in my opinion, a nominative subspecies. I am not 100% sure about the subspecies, as I have only one male on hand, and it differs from this exenmplyar by a black back-breech.
The nearest known part of the range is North-Eastern Kazakhstan, so it's not far by Siberian standards. The species is rare everywhere, as it is difficult to catch it (we have 2 specimens in the Crimea for every ten thousand other eumenins).
Probably they are there in the sands along the river and nest, should be caught more. They rarely get caught in nets, because they don't fly to the water, where everyone usually moose wasps.

Alexander, what does a nominative subspecies mean? P. phaleratus phaleratus ?

This post was edited by akulich-sibiria - 27.10.2012 10: 09