The velar lateral flap is an allophone of the velar lateral approximant in some languages of New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

, such as Kanite and Melpa

Melpa language

Melpa is a Papuan language spoken by about 130,000 people predominantly in Mount Hagen and the surrounding district of Western Highlands Province, Papua New Guinea....

. The extremely short duration of the [ʟ] in intervocalic position (20–30 ms

Millisecond

A millisecond is a thousandth of a second.10 milliseconds are called a centisecond....

) warrants calling it a tap, according to Peter Ladefoged

Peter Ladefoged

Peter Nielsen Ladefoged was an English-American linguist and phonetician who traveled the world to document the distinct sounds of endangered languages and pioneered ways to collect and study data . He was active at the universities of Edinburgh, Scotland and Ibadan, Nigeria 1953–61...

 and Ian Maddieson

Ian Maddieson

Ian Maddieson is a linguist at UC Berkeley, an Adjunct Professor Emeritus at the University of New Mexico, Vice-President of the International Phonetic Association, and Secretary of the Association for Laboratory Phonology...

.

There is no specific symbol for this sound. However, an IPA capital el with a breve for extra-short, [ʟ̆], would capture Ladefoged and Maddieson's description.