KEY I, animals with 4 pairs of legs; spiders, mites, scorpions etc.

Abdomen with distinct joints

Abdomen without distinct joints

Abdomen elongated, forming tail with sting scorpions.
Abdomen not ending in tail..

Small animals (less than 5 mm),
With claws false scorpions.

Larger animals with very long legs harvestmen.

Body clearly divided into two parts spiders.

Very small animals with undivided body mites.

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Henri Mourier

Biologist at Statens Skadedyrslaboratorium

Author of:
"Pests in House and Home"
"Bed Bugs - Bites, Stings and Itches"
"Food Pests"
"Husets dyreliv" (Insects Around the House - Only danish)
"Skadedyr i træ" (Timber Pests - Only danish)
"Stuefluen" (Common Housefly - Only danish)