LSJ s.v. ends with '(A quasi-participial form.)', wording which otherwise only occurs s.v. ἄγυια.
Ἅρεπυίων was once read by Bergk at Thgn.715 in line with a vase from Aegina and the Etymologicum Magnum. Cf. the proposed restoration for Od.1.241, and 20.66 & 77 ἀνηρέψαντο for ἀνηρείψαντο (< ΑΝΕΡΕΦΣΑΝΤΟ). Pi.Pae.6.136 ἀ[νᾱ]ρέψατο along with some mss. of Hes.Th.900 and AR.1.214 provides crucial evidence.
The vase can be seen below (from A. Furtwangler Arch.Zeit. 40 (1882) 197-208 and Tafel 9).
LSJ does not have Arch.Zeit. in its abbreviations for the titles of periodicals. It is
Archäologische Zeitung, which was later renamed to Jahrbuch des Kaiserlich Deutschen Archäologischen Instituts (1886-1917) and Jahrbuch des Deutschen Archäologischen Instituts (1918-).