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On the ceiling of the Oriental hornet comb cell, there are mineral granules of polycrystalline material known to belong to the group of perovskites. In a comb cell intended to house a worker hornet, the roof base usually carries one or several such perovskite granules containing titanium (Ti), whereas in the roof base of a cell housing a developing queen,(More)
This study deals with the development of a silk coat around the growing larva of the Oriental hornet (Vespa orientalis). Prior to its metamorphosis into a pupa, the larva secretes a silk weave, which enwraps it completely. This silk coat is not uniform throughout, but rather varies along the extent of the larval body. First, it is possible to discern in the(More)
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