Attempts to get an overview of all living species on Earth always run into trouble when it comes to insects. There isn't even a clear consensus on how many species there may be. Historically, estimates have gone as high as 30 million, with a recent trend towards lower figures around 6 million. New research now suggests that this last figure needs to be multiplied by three.
This is in line with the fact that wherever researchers have a closer look at insect diversity, they tend to discover several times more species than were previouslly known. I've combined both the challenge of the global count and some recent discoveries, together with the threat of population losses and extinctions to a feature about insect numbers which is out now:
Counting insects
Current Biology Volume 36, Issue 15, 03 August 2026, Pages R833--R835
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Last year's thread is here .
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