Riverside Reptiles, this post was to gather information and no one came forward so I basically responded on that issues and to give others a heads up if they want to take on the project. It is very hard to share information on the Cyrtodactylus intermedius out of Malaysia because as of now, they do not come from these locals scientifically. C. intermedius comes from Thailand and Cambodia with limited habitat. The ones found in Malaysia are not described by any scientist and are via word of mouth from a small area and only happened to make it in our hands due to "bug collectors" in that area, Otherwise they would be rare, delicate and expensive.
I can tell you, they are different in requirements from the Cat Gecko (A. felinus) in the fact that A.felinus is a rainforest gecko with higher humidity needs. This can be at various altitudes depending on local variants. The C. intermedius, including one out of Malaysia based on local data I have, comes from Seasonal Evergreen forests (East side of range) with limited altitudes, not reaching lowland habitat or highland habitat where much of our more sought after species come from. This habitat tends to have different geological material and plant type and geckos show more climbing and cave/rock type colors than others of the Pulchellus complex; but I don't know their habitat or behaviors of that particular area in any details other than captive observation.
I have gave much of my finding to Lee Grizmer with him questioning the possibility of any of this information valid and have also gave much to Montri Sumontha with a much better response. So far he has found much new information in Thailand Cyrtodactylus, including many new descriptions including the Pulchellus Complex, but still no information on the C. intermedius "Malaysia". Hopefully, before the land is destroyed, someone will have the time to field study this group.
I know its not a caresheet, but maybe it will be a start for someone who has the few minutes to put one together.
-Shane