not exactly what you were looking for but perhaps of interest is this
mention in the "Varroa research at IACR-Rothamsted:progress and prospects"
webpage at
http://www.iacr.bbsrc.ac.uk/res/depts/entnem/research/briangrp/varnorm/tvarnorm.html

...This has raised the question of using biological control methods, but
unfortunately no
naturally occurring pests or pathogens specific to V. jacobsoni have so far
been identified.
Mites are however, known to be susceptible to a range of fungi and bacteria.
For many
years, both IACR-Rothamsted and Horticulture Research International,
Wellesbourne
(formerly the National Vegetable Research Station and the AFRC Institute of
Horticultural
Research) have been experimenting with fungi and bacteria for the biological
control of insect
pests. For example, one current project at IACR-Rothamsted involves the use
of honey
bees to transport spores of the fungus Metarhizium anisopliae to oilseed
rape flowers to
control pollen beetles(9)...

the referenced article can be located at the carfax publishing webpage
http://alidoro.catchword.com/vl=-10732024/cl=2/nw=1/rpsv/cgi-bin/cgi?ini=carfax&body=linker&reqidx=/catchword/carfax/13600478/v8n4/s7/p533
and the following summary is provided:
Title: Honey-bee-mediated Infection of Pollen Beetle (Meligethes aeneus
Fab.) by the Insect-pathogenic Fungus, Metarhizium anisopliae
Author(s): T. M. Butt; N. L. Carreck; L. Ibrahim; I. H. Williams
Source: Biocontrol Science and Technology      Volume: 8 Number: 4
Page: 533 -- 538
Publisher: Taylor and Francis Ltd
Abstract: Pollen beetles (Meligethes aeneus) are pests that feed and
oviposit in the buds and flowers of oilseed rape. Honey-bees foraging from a
hive fitted with an inoculum dispenser at the entrance effectively delivered
dry conidia of the entomogenous fungus, Metarhizium anisopliae , to the
flowers of oilseed rape in caged field plots. In both winter- and
spring-sown
rape experiments, a greater mortality of pollen beetles occurred in treated
plots than in control plots. The mortality (61% on winter rape, 100% on
spring rape) was greatest during peak flowering, when the feeding activity
of
both bees and beetles from the flowers was maximal, providing optimal
conditions for inoculum dissemination and infection. Conidial sporulation
occurred on a significant proportion of the dead pollen beetles. There was
no evidence of any adverse effect on the honey-bee colonies.

...also coincidentally, this pollen beetle bears an uncanny resemblance to
aethina tumida...see images at the inra webpage
http://www.inra.fr/Internet/Produits/HYPPZ/RAVAGEUR/6melaen.htm#ima