Cyrtodactylus quadrivirgatus Four-striped Bent-toed Gecko
Some other names for this species:
Marbled Bent-toed Gecko
Lowlands, Selangor, MalaysiaJanuary 15, 2017
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus) Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
On my first night in Malaysia, I saw a few of these arboreal geckos. They were my first Cyrtodactylus geckos, so I was much more excited than my guide Kurt "Orion" G, who has seen zillions of Cyrtodactylus.

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.

Lowlands, Selangor, MalaysiaJanuary 16, 2017
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
The species is named for the four parallel dark stripes down the length of the body, which distinguish them from the many other similar-looking Cyrtodactylus species. Or at least that's what many of the references say. In reality, the patterning of this species is highly variable. I must have seen a couple of dozen of these guys in Peninsular Malaysia and none of them sported the classic four parallel dark stripes.
Lowlands, Selangor, MalaysiaJanuary 17, 2017
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
I think that all of the smaller Cyrtodactylus geckos that I saw in Peninsular Malaysia belonged to this species. This species also inhabits Borneo, but I believe that all of the more-or-less identical-looking geckos I saw in Borneo belonged to a different species. Taxonomy is so confusing.
Bukit Fraser, Pahang, MalaysiaJanuary 19, 2017
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus) Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus) Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
New Cyrtodactylus species are being found/described frequently. It wouldn't surprise me at all if the populations from different isolated mountains were determined to be different species someday.
Kubah National Park, Sarawak, MalaysiaFebruary 18, 2018
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
Last year I saw (what I believe to be) Cyrtodactylus quadrivirgatus only in Peninsular Malaysia. This year I saw a few small geckos in western Sarawak that I believe to be this species. They have four loosely-defined broken stripes, and when I magnify the full-resolution photos I can see what I would describe as dorsal tubercles mostly arranged in parallel-ish rows, which is another characteristic of this species. But I wouldn't place a large bet that these were not Cyrtodactylus pubisulcus, the other small Cyrtodactylus species in this area.
Gunung Gading National Park, Sarawak, MalaysiaFebruary 20, 2018
Four-striped Bent-toed Gecko (Cyrtodactylus quadrivirgatus)
Cyrtodactylus quadrivirgatus are known from both the base of Gunung Matang (location of Kubah National Park) and the base of Gunung Gading (unsurprisingly, the location of Gunung Gading National Park). So I'm not going out too far on a limb to guess that this gecko and the previous one belong to this species.
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