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Dr. Chris Green from New Zealand’s Department of Conservation reports that the wētāpunga, the world's heaviest insect weighing up to 35 grams (as much as a sparrow or mouse), has been successfully reintroduced into the wild after extensive conservation efforts. Over 11,000 of these giant crickets were released onto predator-free islands and mainland sanctuaries since 2010, reversing their endangered status to "Threatened—Nationally Increasing." The breeding program involved innovative husbandry techniques that enabled the survival and thriving of this once-nearly extinct species.
Written locally by qwen2.5:14b on 2026-10-07,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
Once on the brink of extinction, the wētāpunga, known as the world's heaviest insect, is making a comeback thanks to a successful breeding program in New Zealand. Dr. Chris Green, an honorary research associate at New Zealand’s Department Of Conservation, co-authored a report in the New Zealand Journal of Zoology detailing the conservation efforts that led to the release of over 11,000 wētāpunga into the wild. Adult females can weigh up to 71 grams, heavier than a mouse, and their body length reaches up to 4 inches with a leg span of eight inches. The breeding program, carried out by experts at Butterfly Creek and Auckland Zoo, involved innovative techniques like feeding nymphs fresh foliage, fish flake protein, and leaf litter. This recovery effort marks a significant conservation achievement for the species, which was once widespread across New Zealand's North Island but nearly extinct due to habitat destruction by settlers.
Written for “Giant Extinct Insect Rediscovered” on 2026-10-07,
grounded in this article and the 0 other(s) covering the same event.
Once on the brink of extinction, the world’s heaviest insect — the wētāpunga — is staging a remarkable comeback thanks to an extraordinary breeding program.
asserted
insect → stag → program
“This species was endangered at the start of the program, it is now not endangered – it is recovering,” Dr. Chris Green, an honorary research associate at New Zealand’s Department Of Conservation, told RNZ.
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Green → endanger → RNZ
He co-authored a report in the New Zealand Journal of Zoology describing the conservation campaign, which culminated in the release of over 11,000 of these colossal creepy crawlies into the wild.
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which → co → wild
It’s safe to say they’ve made a big return.
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they → ’ → return
Also known as the Little Barrier Island giant wētā, this colossal cricket tips the scales at up to 35 grams — heavier than a sparrow or a mouse — while a pregnant female clocked in at a record 71 grams.
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female → know → grams
“The size of adult females would sit nicely on the entirety of your hand,” exclaimed Green.
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Green → sit → hand
These behemoth bugs, which belong to the cricket or grasshopper family, can also grow to 4 inches long boast a maximum leg span of eight inches.
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grow → belong → inches
Giant wetas once scuttled across all of New Zealand’s North Island, before they were nearly wiped out by settlers, who cut down their forests and introduced cats and rats.
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who → scuttle → cats
By the 1990s, the chonky critters had vanished from NZ’s mainland with the only remaining wild population residing on Hauturu/Little Barrier Island.
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population → vanish → Island
To bring the thick crickets back from the brink, experts at Butterfly Creek and Auckland Zoo had to rely on novel husbandry techniques, including feeding the nymphs fresh foliage, fish flake protein and leaf litter, the Guardian reported.
They were also able to rear large numbers of the cumbersome crickets by keeping them in communal mesh cages.
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They → bring → cages
When the wetas were big enough to fend for themselves, the conservationists started releasing them into the wild with the inaugural translocation occurring in 2010.
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translocation → fend → 2010
Since then, 11,214 wētāpunga have been set in loose in predator-free islands and two fenced sanctuaries on mainland NZ.
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wētāpunga → set → NZ
What’s more, they’ve established successful breeding populations spanning multiple generations.
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they → ’ → generations
During one survey of their new habitat, researchers reported finding 28.5 insects per person per hour of searching, compared to just 1.4 on the Little Barrier Island.
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researchers → find → Island
The program was so successful that, in 2022, the species was downgraded from “Endangered” to “Threatened —Nationally Increasing,” meaning these jumbo Jiminies are seeing a colossal second-coming.
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Jiminies → downgrade → coming
“The future of wētāpunga is looking bright,” said Dr. Green, who hopes they can replicate the success with other endangered species.
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they → look → species
“By documenting this amazing conservation success story, we can share valuable knowledge on husbandry, release methods, and population persistence,” he declared.
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he → document → husbandry
“There are many more critically endangered invertebrates that could benefit from similar programs, for example the Canterbury knobbled weevil (Hadramphus tuberculatus) and several native stag beetle species.”
uncertain
that → be → example
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