Pronunciation: [t͡ʃˈɛlɪsəɹˌiː] (IPA) 
Chelicerae is spelled "kəˈlɪsəri", with the first syllable being pronounced with a short "u" sound like "uh" while the second syllable is pronounced with a long "e" sound like "ee". The word refers to the mouthparts of arachnids that are used for feeding and defense. The spelling can be challenging for those unfamiliar with biological terminology, but understanding the IPA phonetic transcription can help with pronunciation.
Chelicerae are the specialized appendages found in arachnids, including spiders, scorpions, and some other types of arthropods. They are the most prominent pair of mouthparts and are located at the front of the cephalothorax, which is the combined head and thorax region of these organisms.
Chelicerae are typically composed of two segments: a basal segment called the basal article and a distal segment known as the fang. The fang is often curved and hollow, and it contains a venom gland that allows arachnids to inject venom into their prey or enemies. The chelicerae are used primarily for feeding purposes, such as piercing and immobilizing prey or tearing apart food.
The morphology of chelicerae can vary greatly among different arachnid species, reflecting their diverse feeding habits. For example, spiders have chelicerae that are highly modified for web construction, prey capture, and secretion of digestive enzymes, while scorpions have chelicerae that are adapted for grasping and crushing prey.
In conclusion, chelicerae are the foremost pair of mouthparts in arachnids, responsible for feeding behaviors, venom injection, and prey capture. They are vital structures that significantly contribute to the survival and ecological roles of arachnids in their respective habitats.
The word "chelicerae" is derived from the Greek words "chele", meaning "claw", and "keras", meaning "horn" or "antler". In the context of biology and zoology, "chelicerae" refers to the feeding appendages or jaws found in arachnids such as spiders and scorpions. These appendages resemble claws or pincers, hence the inclusion of "chele" in the word.
