The males of Maratus plumosus are tiny, the one photographed was about 3.5 mm nose to tail. Features used when displaying to a female are its lateral flaps, blue leg femora, and bicoloured pedipalps, these are seen in the following greatly enlarged images.
Frontal view showing the pedipalps.
Rear view showing the lateral flaps folded.
Blue femur is visible here.
Here it is displaying with raised leg and lateral flap.
Most images will enlarge.