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Mites

House mite (Glycyphagus domesticus)    

Biology:

House mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the house mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

House mites occur above all in rooms with high humidity levels. In sensitive persons, infestations may result in asthma and skin ailments; they cause house dust allergy.

 

House-dust mite (Pyroglyphidae)

Biology:

House-dust mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the house dust mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

House-dust mites occur above all in rooms with high humidity levels. In sensitive persons, infestations may result in asthma and skin ailments; they cause house dust allergy.
Trombiculid / harvest mite (Neotrombicula autumnalis)

Biology:

Trombiculid mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the trombiculid mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

Trombiculid or harvest mites proliferate above all on warm late summer evenings outdoors. Their larvae suck blood from humans and animals, resulting in very unpleasant itching.

 

Scabies mite (Sarcoptes scabiei)

Biology:

Scabies mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the scabies mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

Scabies mites can cause a severely itching skin disease in humans - scabies. Reporting of cases of scabies is required by health laws and treatment of the disease requires medical help.
Flour mite (Acarus siro)

Biology:

Flour mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the flour mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

Flour mites infest mainly products made from cereal grains, pasta and baked goods. Infested products are coated with a light-coloured dust. They spoil and often taste bitter.
Foodstuffs infested with flour mites may cause severe allergic reactions, asthma attacks and other pathological symptoms.

Red fowl mite (Dermanyssus gallinae)

Biology:

Red fowl mites are very small animals, usually less than 0.5 mm long, with 6 legs in the larval form and 8 legs in the adult stage. They are arachnids, i.e. relatives of spiders.
The development of the red fowl mite is normally from egg to larvae, followed by various nymph stages and then the adult form. However, durable forms are often produced that can survive very long periods of unfavourable conditions. Mass reproduction usually follows when conditions become favourable.

Damage:

Red fowl mites proliferate around domestic poultry. Their bloodsucking may have a negative effect on fattening and laying and they can also function as transmitters of poultry diseases.
If deprived of food for longer periods, the mites may bite humans and other mammals, resulting in severe itching.

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