Small mayfly/olive

Small mayfly/olive

Observation - Small mayfly/olive. Description: Ive been curious about the ID of this small mayfly species on a local hill lough for some years now, any help with the ID much appreciated. The body is 11mm long. No hindwings and 2 tails.

Ive been curious about the ID of this small mayfly species on a local hill lough for some years now, any help with the ID much appreciated. The body is 11mm long. No hindwings and 2 tails.