Pseudis laevis Parker, 1935 Lysapsus limellus laevis (Parker, 1935) Lysapsus laevis is a species of frog in the family Hylidae found in southwestern Guyana and adjacent northern Brazil.

Common name Guyana harlequin frog has been coined for this species.

[3] The body is pale olive green from above, often with an irregular pattern of gray, brown, or black flecks.

Some individuals have a rust or dark tan vertebral stripe.

[3] Lysapsus laevis is an aquatic frog of open flooded savanna.