[1] This entry consists of part of a quoted phrase, as headword, with the quotation completed as the gloss. The phrase is from Synesius of Cyrene's Encomium on Baldness 22-3 (J.P. Migne Patrologia Graeca 66.1169a), where Synesius says how he felt about becoming bald. He was upset at losing his looks, but reflected on his abiding qualities, among which was that 'In respect of Aphrodite, I was most righteous, and I would rival even Bellerophon in moderation.' The quotation in the Suda replaces 'Aphrodite' with 'moderation', creating a repetition where the original has none.
[2] Anteia (or Stheneboea), wife of Proetus, king of Tiryns, tried to seduce Bellerophon/Bellerophontes, but he resisted her; this is the point of the reference to Bellerophontes' moderation, shown by his ability to resist unwanted sexual advances. So the first half of the quotation from Synesius has a similar point to the second, since they both refer to self-controlled behaviour in relation to love and/or sex.