Location in the infrared colour–magnitude diagram of the stars with 0.45 ≤ P_lpv/P_nss ≤ 0.55 (ellipsoidal variables) from Table 6 (dots). Stars with 0.95 ≤ P_lpv/P_nss ≤ 1.05 are represented by crosses; they appear in two different locations, among LPVs with low orbital significance on one hand, and among less luminous giants with much larger orbital significance on the other, perhaps suggesting starspot modulation or short-period pulsators. The dots (P_lpv/P_nss ∼ 0.5) fall in between these two groups, as they are located just below the tip of the RGB.