I bred this species years ago at a time when S. mesaensis was considered "difficult" and in fact my avatar shows the original mother....They weren't difficult at all
Ok, your questions...Heat lamp, heat pads or ceramics is up to you but if you live somewhere that doesn't have a relatively high ambient temperature, then you are going to need something that'll spot/area warm a section of the enclosure to approx 35C with the temps dropping off to 25-28C at the edges. Leave the heated area uncluttered or maybe just a single flat stone and position hides around the cooler areas. Make sure there is good ventilation to stop temperatures building up if the heat source is placed within the enclosure (small hanging halogen for example)...A temperature drop of 10C or so during nightfall is ok..
Many people believe that Smeringurus mesaensis lives on sand and it does kinda .. but if you use consolidated sand you'll find they will dig short burrows and use those instead of ground based hides....especially females. The common name of dune scorpion should maybe not be taken to literally. It's true they are adapted to moving over loose material with their "hairy feet" that stop them sinking in the sand as well as acting as amplifiers that pick up surface vibrations but if given the choice to burrow or not to burrow, they'll almost always burrow. If they can't burrow they'll simply dig a scrape under a bit of surface furniture........bin the dirt mate!
If your animal is adult female it will get all of it's moisture from the prey it captures. Adult males can receive a supplement in the form of a small piece of damp moss placed in the coolest area of his enclosure for a 2 night period (after which it's removed) every 1 or 2 months......Juveniles can be treated as males.
This specie is another one of those that are quite susceptible to mycosis so don't get tempted to introduce a water bowl. Standing water is not necessary for this specie and could actually be dangerous. I never misted mine either and had no dehydration problems whatsoever despite me receiving a gravid female, raising her young to adult and then mating some of her young before selling the specie off........So, basically they are an easy night active species as long as you respect their heat and humidity requirements.
Oh yeh, i don't know if you've already done it but try searching for Smeringurus mesaensis instead of dune scorpion...I'm sure there must be plenty of info about for this species....although (chuckles) ignore everything that doesn't jive with mine