The group of Arthropods that has no antennae is the

The group of Arthropods that has no antennae is the Arachnida. Arachnids are a group of invertebrates that include spiders, scorpions, ticks, and mites, among others. Unlike most other arthropods, arachnids lack antennae. Instead, they have two main body parts (the cephalothorax and the abdomen) and four pairs of legs, which are attached to the cephalothorax. Arachnids have various adaptations to help them sense their environment and locate prey without antennae. For example, many arachnids have specialized sensory structures on their legs, such as setae (hairs) or sensilla (sensory receptors), that can detect vibrations, chemicals, and other stimuli. Some arachnids also have additional sensory organs, such as eyes or chemoreceptors, that can help them navigate their surroundings.