An interpretation of morphometric and gravimetric differences shown by adult Steganacarus magnus (Acari: Cryptostigmata)

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Abstract

The weights and lengths of about a thousand individuals of Steganacarus magnus (Nic.) have been analysed and found to have a bimodal distribution. It is suggested that this can be used as an aid to separating the sexes in this species.

Summary:

An analysis of the weight distributions of adult Steganacarus magnus (Nic.) showed them to be bimodal. Small individuals, without eggs and pre-larvae had a mean weight of 159 μg and large individuals with eggs and pre-larvae had a mean weight of 335 μg. It is suggested that these two weight classes represent male and female individuals.

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