The Phylogeny of the Hymenopteran Brain

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TextFig. 6.
TextFig. 6.

A horizontal section (A) and a sagittal section (B) of the brain of Sirex gigas ♀. Only the right half of the brain is depicted in A. L.opt Optic lobe, St Stem, R.a anterior root. See TextFig. 5 for other labels. Scale 1:80.

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