Bioeroding sponge species from the Wakatobi region of southeast Sulawesi Indonesia Author Marlow, Joseph Author Bell, James J. Author Shaffer, Megan Author Haris, Abdul Author Schönberg, Christine Hanna Lydia text Zootaxa 2021 2021-07-02 4996 1 1 48 journal article 10.11646/zootaxa.4996.1.1 1175-5326 5073343 F398F5CE-82CA-48E2-98BA-9B59AF27DB5D Genus Cliothosa Topsent, 1905 Diagnosis. Clionaid genus with sponges predominantly in endolithic-papillate (alpha) morphology, but exceptionally in other morphologies. With ability to erode calcareous materials. Monaxon megascleres usually as robust tylostyles with round, well-formed, sometimes subterminal tyles, commonly with stepped or truncated modifications of the points. Microscleres spirasterose to amphiasterose forms with spines that commonly have delicately split and recurving tips. Reduced, “nodulous” microscleres may occur. Arrangement of papillar tylostyles in palisade or as bouquets, tyles anchored in sponge tissue, points extending above tissue surface. Choanosomal spicules unordered, also containing typical microscleres. Reduced microscleres restricted to only few body parts. Erosion traces usually large-camerate or even single, cavernous erosion chambers with irregular outline.