Table 7 in Ceriantharia (Cnidaria) of the World: an annotated catalogue and key to species

Table 7. Comparison of anatomical features of Arachnanthus species (after Stampar et al. 2018).
A. australiaeA. bockiiA. oligopodusA. sarsiiA. lilithMarginal tentaclesUp to 40Up to 30~20Up to 35Up to 24Arrangement of labial tentacles(0)1.11.11.11.11(0)1.11.11.11.11(?)(0)1.11.11.11.11(0)1.11.11.11.11(0)3.12.31.23.23.12Length of actinopharynx~2/3 of gastric cavity~1/2 of gastric cavity~1/2 of gastric cavity~1/2 of gastric cavity>1/2 of gastric cavityHyposulcus~1/2 size of stomodeum~1/2 size of stomodeum~2X size of stomodeum length of Actinopharynx