Both spiders and ticks are arachnids.

Research note: Wikipedia pages list the taxonomy of plants and animals in the right-hand column of their respective entries. See Related Links below, for examples.

insects

Mites and spiders are not insects, they are arachnids. While insects and arachnids have many similarities, they also have some obvious differences. Insects have six legs while arachnids have eight.

No, they are insects.

No they are not. Insects have 3 body parts (head, thorax, abdomen) and only have 6 legs. arachnids have 2 body parts (head, abdomen) and have 8 legs. Both insects and arachnids are arthropods.