Might be worth a try, and I recommend getting a smaller amount of it to begin with if you decide to go for it. But you can get dried raspberry leaves off amazon for not that much. I personally got a pound of it for my Acromyrmex for 23 dollars (shipping was free) and they like it really well. A lot of Leafcutters love raspberry leaves. It looks like the smallest amount is an ounce for 7 dollars or so, not quite as good as a deal, but not too worthwhile getting a pound of it if they don't like them.
May not work with yours since they are completely different and don't really even have the same "diet", but might be a worthwhile recommendation. It seems like something that they'd like. But a good possibility they'll just ignore it, though never know.
Edited by Vendayn, June 16 2016 - 10:53 AM.