There hasn’t been much fertility in this lab, and I don’t know what’s going on. The spiders are getting weird and lazy. Here’s Yara (last seen here), who has been building thick clumpy cobwebs and also assembling debris into a nest — she’s partly obscured by a wood shaving here. The strange thing is above her, and to the left.
Those are unhappy looking eggs enclosed in a thin web, not an egg sac. I can say with some confidence that they’re not going to develop.
This is awkward and annoying. Next week I’m going to sterilize cages with alcohol and set up new frames and repopulate, hoping this problem will go away. Maybe they’re stressed? Maybe they’re just old and lapsing into decrepitude?