
TextFig. 27.
Three horizontal sections through the brain of Vespa vulgaris. A = female type, ♀, queen, B = ☿, worker, C = ♂, male. Labels as usual. 1:40.
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Three horizontal sections through the brain of Vespa vulgaris. A = female type, ♀, queen, B = ☿, worker, C = ♂, male. Labels as usual. 1:40.