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. 2017 Feb 8;13:13. doi: 10.1186/s13002-017-0138-y

Fig. 2.

Fig. 2

A Vespula spp. nest, with the surrounding material removed to show the layers. This nest had been reared in a hive box over the summer and left in the hope of ensuring there would be enough new queens who hibernated and successfully made nests the following year