0 any of a group of small animals, similar to insects but with four pairs of legs, that include spiders, scorpions, ticks, and mites -- 蜘形纲动物（包括蜘蛛、蝎子、蝉和螨）
In addition to the eyes, almost all arachnids have two other types of sensory organs.
Arachnids are further distinguished from insects by the fact they do not have antennae or wings.
It is preyed on by birds, reptiles, some mammals and larger arachnids.
Being small birds they may be preyed on by a number of predators including praying mantises and arachnids.
He is remembered for amassing a large collection of amber inclusions that amounted to 4216 specimens of plants, insects, arachnids, myriapods, and more.
Leach also worked and published on insects, myriapods, arachnids, mammals and birds.
The handbook is a guide to all arachnids including scorpions, and not just spiders.
A world where insects and arachnids grow to frightening proportions.
