New sciophilous sponges from the Caribbean (Porifera: Demospongiae) Author Van, Rob W. M. text Zootaxa 2009 2107 1 40 journal article 10.5281/zenodo.187789 6593e89a-9c63-4584-9a5f-f70993e32d31 1175-5326 187789 Key to the Forcepia species of the Western Atlantic. Sponges considered here must have some form of forceps. 1 Spicules include acanthostyles erect on the substrate .................................................................................................. 2 - No acanthostyles .......................................................................................................................................................... 3 2 Sigmas present ........................................................................................................................ F. (L.) microlabis n. sp. - No sigmas .......................................................................................................................................... F. (L.) vermicola 3 Chelae with peculiarly twisted alae in varying quantity; sigmas may be present ..................................................... 4 - All chelae of symmetrical shape; no sigmas................................................................................................................. 5 4 Sigmas up to 200 µm; tylotes only up 300 µm............................................................................ F. (F.) grandisigmata - Sigmas, if present <40 µm or absent; tylotes> 400 µm .............................................................. F. (F.) fistulosa n. sp. 5 Forcipes up to 260 µm; chelae partly with reduced alae .................................................................... F. (F.) colonensis - Forcipes up to only 92 µm; chelae normal .................................................................................... F. (F.) minima n. sp.