and ataraxia to be a katastematic pleasure
For the record, ataraxia IS one of Epicurus' examples of a katastemaric pleasures.
"ἡ μὲν γὰρ ἀταραξία καὶ ἀπονία καταστηματικαί εἰσιν ἡδοναί: ἡ δὲ χαρὰ καὶ ἡ εὐφροσύνη κατὰ κίνησιν ἐνεργείᾳ βλέπονται."
Epicurus says in his work On Choice are : "Peace of mind (ataraxia) and freedom from pain (aponia) are pleasures pertaining to a state or condition (katastēmarikai eisin hēdonai); joy and delight are seen to consist in motion and activity." (my translation)