So this is about my Tetramorium Immigrans (formerly species E.) colony, which is my very first and only colony. I've had them for almost 2 years now.
I've noticed this problem before, but I only thought that I wasn't feeding them enough. However, this week I've been giving them plenty crickets and even nuts, which they pounced on. Hasn't made a difference.
So here's the problem: Every so often (like one or two cases a day) I see one worker aggressively tugging (NOT cleaning or grooming) a leg or antennae of another worker, and later stinging them. The victim is often either passive or trying to defend herself (latter is more common if their antennae is the target, must hurt), while the aggressor is fierce, like she's attacking a rival colony member. Passersby never think much of it, just tapping their antennae around calmly a few times, and walking off.
If I try to break up the fight, usually one of two things happen: 1) They break apart easily, and the aggressor acts stunned and searches for the victim, or 2) the aggressor NEVER EVER lets go. Usually I notice another dead body the next day.
This happens anywhere, inside or outside the nest.
I will link a video of one case. This isn't the best example, since most of the fighting was already over. The victim here is dazed, like she has just been stung. I used some heavy image stabilization, the original video is terribly shaky.
Ask if you need another better video, or more details about my setup.
Edited by Derek451, March 23 2019 - 10:13 PM.