distomesal prefemoral spinous process

[Sco] an immovable, multicellular, inarticulate process, bearing one spine, on the distal end, on the mesal side, of the prefemur of the ultimate legs in Scolopendromorpha Pocock, 1895.
Remarks: This term is typified by the structure on the prefemur of L21 of Ethmostigmus trigonepoda (Leach, 1816).