The same is true of our (North America) Boros unicolor in many places. However, as easy as it is to find larvae, adults are generally quite uncommon in collections. Larvae of B. unicolor are typically found beneath bark of dead Pinus spp. (mostly standing); most commonly breast-high and lower.
Imago or larvae - this is the question. Larvae are no problem to find and ship to UK. But imago are some kind of short-living (not sure they will survive 3 weeks in post).
Anthicidae (also tenebrionoid beetles) bear mesothoracial glands. So perhaps this is true for Boridae as well.
According to my personal experience they are rather easy to rear. I will ask my colleagues about imago first - perhaps somebody can provide imago and I will add larvae.
Vladyslav, Boros scheideri is rather easy to collect in Latvia and W Russia. Perhaps the situation in Ukraine is same. If you know the microhabitat - this species is everywhere!
Yes, I understand. But in the Carpathians a pine is almost no. That because I wanted to know about effective pheromone and try to find in spruce forests.