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Marumba cristata cristata
large, 3"
tropical forest
I spotted this moth during the day on a sign in the middle of the parking lot in front of the headquarters.
Thanks for all the links bayucca. The ranges just fits, I think you're right on this one.
You have to verify yourself with some links:
http://tpittaway.tripod.com/china/m_cri....
http://www.sphin-sea.unibas.ch/SphinSEA/...
http://www.arbec.com.my/moths/sphingidae...
I think the white spot might be important to separate the other Marumbas from Cristata:
http://www.arbec.com.my/moths/sphingidae...
http://www.arbec.com.my/moths/sphingidae...
Check also the geographical range. I am not really familiar with that corner of the jungle...
I'd say definitely a sphinx of some sort. Thailand has around 200...but I'll try to poke about and see what I can find!