Lucan [1st century CE] (Pharsalia, Book 9, verse 930): And who would fear / Thy haunts, salpuga? Yet the Maids of Styx / Have given thee power to snap the fatal threads. - [Ridley, 1919 translation]

Pliny the Elder [1st century CE] (Natural History, Book 8, 43): ...there is a wide belt of desert [in Ethiopia] where a tribe was wiped out by scorpions and poisonous spiders [solipugis]... - [Rackham translation]

Isidore of Seville [7th century CE] (Etymologies, Book 12, 4:33): The salpuga is a snake that is invisible. - [Barney, Lewis, et. al. translation]

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Serpents 8.30): Salpiga is a serpent that is not easy to see because of its smallness, and yet it has the greatest power to do harm. It signifies the vice of a hidden grudge, which infects many without even realizing it, and while the guilt of the neighbor is not forgiven from the heart, the evil that gradually springs up in hatred is sought for revenge, not paying attention to what was said by the Lord: Unless you forgive men's sins from your hearts, neither will your heavenly Father will forgive you your sins. - [Badke translation/paraphrase]