Double Ventilators on a Hornet’s Nest コガタスズメバチ♀2匹同時の扇風行動

Two workers of small hornet (Vespa analis insularis, family Vespidae) stayed on the nest envelope and tried to cool off the overheated nest by their wingbeats. Meanwhile, some workers were busy in building the nest envelope, other ones flying in and out of the nest under the eaves. The air temperature was 31 degrees centigrade where I stood. Captured before noon (11:15 am) of early-September 2016 in Japan.


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