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. 2021 Apr 19;207(3):321–326. doi: 10.1007/s00359-021-01485-3

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© The Author(s) 2021

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Fig. 2 — Two males of Locusta migratoria from a breeding experiment in the lab of Peter Bräunig. The one on the left is in the solitarious, the one on the right in the gregarious phase. Please note differences in colour, shape of pronotum, and length of hind leg femur. (Photographs: Willi Maile)