Females are 12 to 14 millimetres (0.47 to 0.55 in) long while males are 9 to 12 millimetres (0.35 to 0.47 in).
The head is black and is  clothed with brownish-black hairs except around the lower part of the face and the base of the antennae where the hairs are yellowish-white.
The thorax is densely pubescent, the hairs being yellowish-white on the back and sides and brownish-black on the underparts and legs.
The wings are translucent with brownish-black veins.
The first two terga (dorsal plates) of the abdomen have erect pale hairs and the hind terga have erect black hairs.
The scopa (pollen-carrying apparatus under the abdomen) has reddish-brown hairs.
Females are 12 to 14 millimetres (0.47 to 0.55 in) long while males are 9 to 12 millimetres (0.35 to 0.47 in). The head is black and is  clothed with brownish-black hairs except around the lower part of the face and the base of the antennae where the hairs are yellowish-white. The thorax is densely pubescent, the hairs being yellowish-white on the back and sides and brownish-black on the underparts and legs. The wings are translucent with brownish-black veins. The first two terga (dorsal plates) of the abdomen have erect pale hairs and the hind terga have erect black hairs. The scopa (pollen-carrying apparatus under the abdomen) has reddish-brown hairs.
Megachile melanophaea