Final answer:
The answer to the question 'The parasitic or micropredatory arachnids belong to the order ________' is Acari, which includes the ticks and mites.
Step-by-step explanation:
Arachnids and Micropredatory Order
The parasitic or micropredatory arachnids belong to the order Acari. This order includes various species such as ticks and mites, which are known for their parasitic behavior on other organisms. Arachnids are a class of animals in the subphylum Chelicerata, known for their eight legs and lack of antennae and wings. Their body is divided into a cephalothorax and an abdomen, and they often have internal breathing systems like tracheae or book lungs. Arachnids are predominantly carnivorous, and they utilize their chelicerae and pedipalps for feeding, movement, and defense.
The order Acari is specifically characterized by the presence of mites and ticks that can be both parasitic and disease carriers.
Other orders within the class Arachnida include Araneae (spiders), Scorpiones (scorpions), and Opiliones (daddy-long-legs). Each of these orders is distinct. Spiders, for instance, are known for their web-building abilities and venomous bites. Scorpions are identified by their pincer-like pedipalps and a venomous stinger at the end of their tail, and they give birth to live young, while daddy-long-legs are non-venomous and characterized by their exceptionally long legs in comparison to their body size.