Leviticus 11:22 (Latin Vulgate version): Comedere debetis, ut est bruchus in genere suo, et attacus atque ophiomachus, ac locusta, singula juxta genus suum. (Thomson translation: These of them in particular you may eat, the brouchus-locust and its species, and the altake-locust and all its species, and the serpent-fighter [ophiomachus] and all its species, and the grasshopper and all its species.)

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Worms 9.31): Opimachus, as the Glossa says, is a worm very small in body, but exceedingly strong in boldness of mind and character. For it is said that it has a battle with snakes and defends its life with skill in fighting; but although it is small in body and unequal to the strength of a snake, yet skill in fighting overcomes its stronger opponent, and it lives securely by boldness rather than by natural strength. - [Badke translation/paraphrase]

Vincent de Beauvais [circa 1190-1264 CE] (Speculum naturale, Book 16.114): Ophimachus (as we read in Leviticus) is one of the unclean birds according to the law, namely from those which indeed walk on four feet, but have longer hind legs by which they leap over the ground. But I think that this should be numbered among the small flying creatures, like the caterpillar and the locust, which are of the same genus, as we read there. - [Badke translation/paraphrase]