How many insect orders each contain over 100,000 described species (including beetles, flies, and butterflies/moths)?
Answer5 orders
Beetles alone (Coleoptera) are one of these five hyper-diverse groups.
Source: Wikipedia (2025) en.wikipedia.org
Animals · Facts & sources
Bug facts & stats
4 sourced facts about insects and bugs, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Going deeper
At least how many insect species extinctions have been documented since the year 1500?
Answerat least 66
Many scientists believe the real number of insect extinctions is much higher, since many species vanish before being recorded.
Source: Wikipedia (2025) en.wikipedia.org
Expert level
Scientists estimate the true total number of insect species in existence could be as high as how many?
Answerperhaps 5.5 million
Most undiscovered species are thought to be in tropical regions that haven't been thoroughly surveyed.
Source: Wikipedia (2025) en.wikipedia.org
Terrestrial insect populations are estimated to be declining by about how much per decade?
Answerabout 9% per decade
That steady decline has raised concern among scientists about the long-term health of ecosystems that depend on insects.
Source: Wikipedia (2025) en.wikipedia.org
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