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Jon Sullivan
@joncounts@mastodon.nz  ·  activity timestamp 2 weeks ago

Look! Cinnabar moth!

Last summer I was surprised to find cinnabar moth caterpillars feeding on the native pahokoraka, Senecio quadridentatus, in the middle of Christchurch city, NZ. Cinnabar moths were released to control the European pasture weed ragwort back in the 1940s.

I collected four caterpillars and fed them on pahokoraka leaves until they pupated on 16 January. I put them on some scrunched up newsprint in a plastic container and put that outside in a shaded area of our garden. Today, three adult moths emerged.

They're day-flying moths which retain the poisons of their host plants and advertise that to would-be predators with their bright colours,

https://inaturalist.nz/observations/328816568

#mothodon #moths #nz #Christchurch #BiologicalControl

A photo of an elegant black and vivid red moth. It's black. And it's red. And it's a moth!

My full-resolution photo, and collection details, are on iNaturalist NZ at https://inaturalist.nz/observations/328816568
A photo of an elegant black and vivid red moth. It's black. And it's red. And it's a moth! My full-resolution photo, and collection details, are on iNaturalist NZ at https://inaturalist.nz/observations/328816568
A photo of an elegant black and vivid red moth. It's black. And it's red. And it's a moth! My full-resolution photo, and collection details, are on iNaturalist NZ at https://inaturalist.nz/observations/328816568
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Jon Sullivan
@joncounts@mastodon.nz replied  ·  activity timestamp 2 weeks ago

I'm thinking more about the life cycle of these cinnabar moths. It's quite remarkable. The eggs get laid late spring and take about 2 weeks to hatch. The caterpillars eat for about a month through the summer. They then pupate, and wait.

And wait.

And wait.

They wait through all of Autumn and Winter and early Spring.

Then, the adult moths emerge to mate and lay eggs and the cycle starts again.

They're dormant as pupae for about 10 months of every year!

https://digitallibrary.landcareresearch.co.nz/digital/api/collection/p20022coll21/id/41/download

#moths #mothodon #CinnabarMoth

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Jon Sullivan
@joncounts@mastodon.nz replied  ·  activity timestamp 2 weeks ago

Here are my iNat observations of the caterpillars, pupae, and now moths, all connected with iNat's "same specimen over time" observation field.

https://inaturalist.nz/observations?verifiable=any&place_id=any&field:Same%20specimen%20over%20time=257561024

#moths #iNaturalist #nz

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