Z. George, G. Siddiqui, N. George, and R. A. Lucena, “A new species of Achelia (Pycnogonida: Ammotheidae) and first records of intertidal sea spiders found on Zoanthus (Cnidaria: Zoantharia) from Karachi, Pakistan”, Zootaxa, vol. 4821, no. 2, pp. 371–393, Jul. 2020.