Acartiidae

{{Short description|Family of crustaceans}}

{{automatic taxobox

| image = Acartia clausi, fem. V-adult.jpg

| image_caption = Acartia clausi

| taxon = Acartiidae

| authority = Sars, 1903

| subdivision_ranks = Genera {{cite web |author=T. Chad Walter & Geoff Boxshall |year=2011 |title=Acartiidae |editor=T. C. Walter & G. Boxshall |work=World Copepoda database |publisher=World Register of Marine Species |url=http://www.marinespecies.org/aphia.php?p=taxdetails&id=104074 |accessdate=July 6, 2011}}

| subdivision =

• Acartia Dana, 1846
• Acartiella Sewell, 1914
• Paracartia T. Scott, 1894
• {{nowrap|Paralabidocera Wolfenden, 1908}}
• Pteriacartia Belmonte, 1998

}}

Acartiidae is a family of calanoid copepods distinguishable by the rostral margin not being extended.{{cite web |author=J. M. Bradford-Grieve |title=Acartiidae Sars, 1903 |work=Calanoidea: Families |date=October 2, 2002 |accessdate=July 6, 2011 |publisher=Australian Museum |url=http://crustacea.net/crustace/calanoida/www/acartiid.htm| archiveurl= https://web.archive.org/web/20110719000920/http://crustacea.net/crustace/calanoida/www/acartiid.htm| archivedate= 19 July 2011 | url-status= live}} They are epipelagic, planktonic animals, not being found below a depth of {{convert|500|m}}. There are over 100 described species distributed throughout the world's oceans, mainly in temperate areas.