Past surveys
have noted a 16.9% Wolbachia infection frequency in
species of neotropical insects (Werren et al. 1995b),
between 11.3% and 15.0% in neotemperate insects
(unpublished data, Werren et al. 1995b)and up to 46%
in terrestial isopods (Bouchon et al. 1998).