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claspers

British  
/ ˈklɑːspəz /

plural noun

  1. a paired organ of male insects, used to clasp the female during copulation

  2. a paired organ of male sharks and related fish, used to assist the transfer of spermatozoa into the body of the female during copulation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Spotted ratfish also use pelvic claspers for mating, similar to many other cartilaginous fish.

From Science Daily Oct. 16, 2025

But apart from the denticles on their pelvic claspers, spotted ratfish are largely smooth-skinned.

From Science Daily Oct. 16, 2025

They use gripping appendages, called claspers, to hook themselves onto a female’s spines, giving males an inside track to fertilize the female’s eggs as soon as she releases them from a compartment in her head.

From New York Times May 6, 2022

From those they gathered more evidence of male antiarchs with their claspers still attached.

From The Guardian Oct. 19, 2014

But if your caterpillar is one of the Geometers, with only two, or perhaps three, pairs of claspers, the mode of procedure is very different.

From Butterflies and Moths (British) by William S. Furneaux

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