Cuckoo-wasps of Poland

The new book by Bogdan Wiśniowski is a monograph of Chrysididae of Poland. It was published in 2015 as the second volume of the series of books on Polish Hymenoptera Aculeata. Another volume will be published in 2017.

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Some more information about the book you can find here:

Cuckoo-wasps (Hymenoptera: Chrysididae)