Original sentence: They are the subject of an urban legend which not only claims that the Harvestman are venomous, but are in fact more venomous than any of the spiders, though they are incapable of biting humans due to their lack of penetration
Edited sentence: They are the subject of an urban legend which not only claims that Harvestmen are venomous, but are in fact more venomous than any of the spiders but are incapable of biting humans due to their lack of penetration