So, I notice these guys in the worm farm a few weeks ago (borrowed picture)
In the last week, I've been finding them on the dinning room floor, apparently crawling out of the worm bin. Finally, this morning I went about scouring the internet for an answer. One of the two worm farms is going back to school next week, and I'd rather not have a cleaning lady asking me about these guys she might find on the floor.
Turns out, I'm quite confident about this, that it is a soldier fly larvae, or, perhaps more specifically, a garden soldier fly larvae. All I read is that they are voracious eaters of dead and decaying matter (good for worm farm), don't compete with the worms so much, but like it much wetter than do worms. So, I will go about adding some nice dry material to both farms today. They leave the worm farm to pupate, looking for dryer soil. Alas, my dining room floor doesn't have much soil, I work hard to keep it that way.
I'm gonna have to totally have a 'worm farm ecosystem' lesson this year in either (both?) grammar 6, Life Science, or Logic 2, Biology. Now the creative juices are flowing! We can identify how it works in the carbon cycle and the nitrogen cycle.... WOOT! I'm excited now!