These seem to have longer, sharper spines than Hyastenus sp. 1 and differ a bit in carapace sculpture. They are similar to what we are calling Naxioides taurus and could be that species, or they could be Hyastenus unciger. They are often found on gorgonians or soft corals, particularly at night, and often decorate their spines with bits of hydroids or other debris that makes them harder to see. Speaking as one who has accidentally put my thumb on one of these, I can attest to the fact that those spines are sharp!
Created 13 September 2018