... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Figure 1: (a) The discovery spectrum of KIC 1718290. (b) SED fit to broadband photometry. (c) Line-profile fit to the WHT spectrum. ... We introduce the first g mode pulsator found to reside on the classical blue horizontal branch. ... This places it well above the extreme horizontal branch, rather on the very blue end of the classical horizontal branch, where shell hydrogen burning is present. ...