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First, at the base of the leaf the female
by its strong jaws cuts two
unequal, curved lines from the basal rim to the central vein. This separates the larger part of the leaf from the base, the two parts remaining connected only by the central vein. The separated part will show three tips that are important for the construction of the bag. The central vein is bitten by the female in a way to interrupt the providing flow of water, the connection still being strong enough to hold the separated part of the leaf. |
