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→''Ornithonyssus''
===''Ornithonyssus''===
===''Ornithonyssus''===
*Also called the 'Northern mite' or 'Northern feather mite'
*Closely related to ''Dermanyssus''
*Hairy
*Spends enitre life cycle '''on''' the host
*Occurs in caged birds and poultry
*Causes feather to become matted and severe scabbing can develop
**Scabs particularly seen around the vent
*Decreases egg production
*Grey or black discolouration of feathers when large numbers of mites are present
===''Trombicula''===
===''Trombicula''===