Calotheca

{{Short description|Genus of choanoflagellates}}

{{for|the grass genus|Calotheca (plant)}}

{{Automatic taxobox

| taxon = Calotheca

| authority = H. A. Thomsen and O. Moestrup, 1983

| subdivision_ranks = Species

| subdivision =

{{Linked species list

| Calotheca pallida | (Bryant, 1945)

| Calotheca parvula | (Weise, 1908)

}}

| subdivision_ref = {{GBIF |id=11146617 |taxon=Calotheca |accessdate=19 April 2022}}

}}

Calotheca is the name used for a genus of choanoflagellates in the family Acanthoecidae, though this name is a junior homonym of the name Calotheca Heyden, 1887, and it must be replaced under the rules of the ICZN.[http://www.ubio.org/NZ/search.php?search=calotheca&colname=on&colauthority=on&colcomments=on&colcategory=on&colpublication=on&vol=&page= Nomenclator Zoologicus] The species C. alata is from Indo-Pacific Localities.Electron Microscopical Investigations on Two Loricate Choanoflagellates (Choanoflagellida), Calotheca alata gen. et sp. nov. and Syndetophyllum pulchellum gen. et comb. nov., from Indo-Pacific Localities. H. A. Thomsen and O. Moestrup, Proceedings of the Royal Society B, 22 August 1983, {{doi|10.1098/rspb.1983.0057}}