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Fig. 5. System for measuring pulling forces of Archegozetes longisetosus,
using an analytical scale (A&D Instruments Ltd., UK). Mites were glued by
the notogaster to an insect pin, which was mounted to a piece of modelling
clay. Mites were attached to the vertical test surfaces and the scale was set
to zero. Changes in masses were recorded with a personal computer and the
software RsKey 1.34 (A&D Instruments Ltd., UK). Negative changes
corresponded to pulling forces.