Ostioles
Two pairs of dorsal, slit-like apertures on the bodies of Pseudococcidae (mealy bugs). The anterior pair is located on the thorax, the posterior pair on the VII abdominal segment. Their excretion may be defensive.
Two pairs of dorsal, slit-like apertures on the bodies of Pseudococcidae (mealy bugs). The anterior pair is located on the thorax, the posterior pair on the VII abdominal segment. Their excretion may be defensive.