The structure of perovskite-type La0.95Sr0.05Ga0.95Mn0.05O3-x crystals has been investigated using high-resolution X-ray powder diffraction technique in the temperature range of 298-1173 K. A transition from orthorhombic (Pbnm) to rhombohedral (R (3) over barc) phase has been detected near 340 K. A chevron-like configuration of ferroelastic domain structure was observed in rhombohedral La0.95Sr0.05Ga0.95Mn0.05O3-x crystal using the Laue technique. The chevron-like pattern is formed by the intersection of W-type domain walls (211), (101) and (110) and demonstrates the reversibility of this domain wall structure configuration at thermal cycling through the phase transition point.