martinjohnbishop's picture

Riccardoella limacum, Cambridge

Observed: 20th October 2012 By: martinjohnbishopInvertebrates expert

The length of the mite is 0.4 mm. Host is Tandonia budapestensis in the first and Deroceras reticulatum for the other two pictures.

    Likely ID
    Riccardoella limacum
    Confidence: It might be this.
Species interactions


miked's picture

So what does the mite do to

So what does the mite do to the slug? It looks rather small to cause much damage.

martinjohnbishop's picture

When one individual slug is

When one individual slug is infested with hundreds of mites there could be an adverse effect.

"Knowledge of the anatomy and contents of the alimentary canal of R. limacum was obtained by using transverse and longitudinal sections of adult mites. Histological and histochemical techniques revealed the absence of slug mucus and the presence of slug amoebocytes in the gut caeca of the mite. The evidence available supports the contention that the slug mite is a blood feeder and obtains this food by producing a feeding tube or ‘stylostome’ in the tissues of its host."