Female of Zygaena transalpina looking for a suitable place for laying. This was suggested by the fact that she was flaccidly flying above an unflowered part of the grassland (Franche-Comté, France, July 2009).
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The insect finally chose a leaf of a wild rose which is actually not the foodplant used by caterpillars. Nevertheless some plants of Fabaceae family were growing nearby, though quite remote from the egg-laying site.
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The eggs were laid slowly one by one on the underside of the leaf, very close to the ground.
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