World number three in women's section, Humpy, who was on a winning streak after three consecutive victories, had to share honours with world number 17 Lela Javakhishvili following 31 compelling moves.
In another game, 25-year-old Harika had to face another successive draw against world number 29 Pia Cramling of Sweden.
The 29-year-old Humpy retained her top spot with four points after the fifth round, while Harika was third with 3.5 points.
