Copelatus is a large genus of small diving beetles. There are some 470 described species in the genus, found worldwide, but they are most diverse in tropical South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

, Africa

Africa

Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

 and South-East Asia.

Systematics

The genus Copelatus is divided into several subgenera (Colepatus, Papuadytes etc.), some of which are sometimes treated as separate genera. It may be paraphyletic with respect to the smaller Copelatinae genera Lacconectus and Aglymbus. The species include:

Copelatus abditus Copelatus abonnenci Copelatus anastomosans Copelatus angustatus Copelatus assimilis Copelatus ater Copelatus australiae Copelatus bacillifer Copelatus bagus Copelatus bengalensis Copelatus blatchleyi Copelatus bilunatus Copelatus biolleyi Copelatus caelatipennis Copelatus chevrolati Copelatus chloroticus Copelatus clarki Copelatus concolorans Copelatus consimilis Copelatus cubaensis Copelatus debilis Copelatus distinctus Copelatus decemsulcatus Copelatus epactus Copelatus erichsonii Copelatus ferrugineus Copelatus fidschiensis Copelatus filiformis Copelatus fragilis Copelatus freudei

Copelatus galapagoensis Copelatus gestroi Copelatus glyphicus Copelatus glyptus Copelatus haemorrhoidalis Copelatus iguelaensis Copelatus imasakai Copelatus imitator Copelatus impressicollis Copelatus irregularis Copelatus japonicus Copelatus johannis Copelatus kainantuensis Copelatus kalaharii Copelatus kammuriensis Copelatus koreanus Copelatus lineatus Copelatus louayensis Copelatus madangensis Copelatus mancus Copelatus melanarius Copelatus minor Copelatus mulangensis Copelatus mvoungensis Copelatus nigrolineatus Copelatus oblitus Copelatus pantosi Copelatus parvulus Copelatus posticatus Copelatus punctipennis

Copelatus punctulatus Copelatus shizong Copelatus striatellus Copelatus sudrei Copelatus sylvaticus Copelatus tonkinoides Copelatus renovatus Copelatus tarapotensis Copelatus togoensis Copelatus tostus Copelatus utowaensis Copelatus weymarni Copelatus zimmermanni