I recently purchased a group of L. bishopi, mostly subadults and then a few 2nd instars. My problem is that I've already lost half of them. They seem to be doing fine and then they just drop dead one day. Do these have a special requirement that I'm overlooking? I'm keeping them just like like I do my L. hesperus & L. mactans, which are all doing fine. What I'm using as containers are the plastic display boxes typically used for beanie babies, with a lid on the top, basically just a rectangular plastic box. I have 3-4 small holes drilled into each side. I place two branches for each widow to set up a web with no substrate. I'm feeding small crickets and roaches. Any widow experts have any advice?