Polypedates macrotis Dark-eared Treefrog
Also known as:
Brown-striped Treefrog, Baram Whipping Frog, Bongao Treefrog
Kubah National Park, Sarawak, MalaysiaJanuary 26, 2017
Dark-eared Treefrog (Polypedates macrotis)
This medium-sized treefrog is readily identifiable by the dark brown irregular stripe from the back of the eye, across the tympanum, and back past the shoulders.

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on this trip to Malaysia, as well as a travelogue of the trip.

Kubah National Park, Sarawak, MalaysiaJanuary 27, 2017
Dark-eared Treefrog (Polypedates macrotis) Dark-eared Treefrog (Polypedates macrotis)
This was one of the relatively few frog species that I saw both in Peninsular Malaysia and in Borneo.
Santubong Peninsula, Sarawak, MalaysiaJanuary 29, 2017
Dark-eared Treefrog (Polypedates macrotis)
This one has much less of a mottled pattern, but I'm still reasonably confident that it's the same species.
Kubah National Park, Sarawak, MalaysiaFebruary 18, 2018
Dark-eared Treefrog (Polypedates macrotis)
One can never have too many frogs. Live it up, guys!
Gunung Mulu National Park, Sarawak, MalaysiaFebruary 24, 2018
Dark-eared Treefrog (Polypedates macrotis)
I had trouble identifying this one because the distinguishing "dark ear" isn't visible from this angle, and it seemed more strongly patterned than the Polypedates macrotis that I remembered. Fortunately Kurt recognized it, and I now see that its pattern is quite similar to some of the ones I saw at Kubah National Park last year.
Online references:
Printed references: