Trapdoor Spider - Liphistius sp.

We saw total of 5 Trapdoor Spiders during this trip, 4 of which within 1 meter distance from each other. 2 were big size as seen in previous observation and verified to be Liphistius malayanus but there were 2 others, which are half the size of Liphistius malayanus, looks different, so not sure what species it is as it looks a bit like Liphistius desultor, but that species is endemic to the island of Penang.