One insect’s leavings is another’s dinner
Like human armies, army ants spell trouble for anything that finds itself in their path. The insects make a habit of killing organisms, often much larger than themselves, breaking them into pieces and dragging the morsels back to their bivouacs. But they do not eat everything. Rubbish piles full with discarded bits of prey are a feature of army ant bases. Where there is carrion, there are usually scavengers. But little is known about which animals scavenge on army ant leavings.
In total, they collected 8,364 adult beetles, 511 beetle larvae and 24 beetle eggs. Those were spread across 91 species, several of which were entirely new to science. Aside from that being far more than anyone had expected, the presence of the larvae and eggs indicates that the refuse piles are not so much convenient restaurants as full-on homes, where the beetles live out their entire lives.
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