Commodity PRA for Agaricus bisporus - Defra

Pest Component attacked Notes on worldwide
distribution
Tarsonemus spp. Feed on the mycelial Species of
threads at the base of the Tarsonemus can be
Specifically:
stem causing stems found all over the
damage and discolouration.
Virus vectors.
world.
T. floricolus (Canestrini
& Fanzago)
T. myceliophagus
Hussey
Order: Astigmata
Caloglyphus
mycophagus Megnin
Caloglyphus
mycophagus Megnin
Tyrophagus
putrescentiae
(syn. Tyrophagus
lintneri)
Order: Mesostigmata
Parasitus fimetorum
Berlese
Digamasellus fallax
Leitner
Seven species of
Tarsonemid mite have been
recorded in association with
mushroom crops
Mycophagous Worldwide.
Mycophagous Worldwide.
Mycophagous and feeds on
mushroom mycelium and
tissue as well as moulds
and a variety of organic
material. If present in large
numbers, can results in
both large and small pits on
the mushrooms caps.
Worldwide.
Predatory mite Worldwide.
Commodity PRA for Mushrooms
CSL/Warwick HRI, December 18th 2007; revised 24 February 2009
CSL Registered File No. PPP 12011A
Notes on UK distribution Reference
Both T. floricolus and T.
myceliophagus are present in
the UK.
Geels et al. (1988); Hussey (1963);
Flegg et al. (1985)
Common on mushrooms. Fletcher et al. (1994); Anon. (2000)
Common on mushrooms. Fletcher et al. (1994); Anon. (2000)
Common on mushrooms Fletcher et al. (1994); Anon. (2000)
Common in Mushrooms. Fletcher et al. (1994)
Predatory mite Worldwide. Not known to be present in the
UK.
J. Ostojia-Starzewski, (CSL, Personal
Communication)
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