ɪɾ ɪz pɹˈɑːmɪnənt ɪnðə θˈɪkɚ, ˈɑːɹmɚd pˈɑːɹts ʌv ˈɪnsɛkts ænd ɚɹˈæknɪdz, ɪspˈɛʃəli ɪnðə bˈaɪɾɪŋ mˈaʊθpɑːɹts ænd sklˈɛɹaɪts ʌv skˈoːɹpiənz ænd bˈiːɾəlz.
It is prominent in the thicker, armored parts of insects and arachnids, especially in the biting mouthparts and sclerites of scorpions and beetles.