Breeding: Colias tyche werdandi

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wolf
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Breeding: Colias tyche werdandi

Post by wolf »

Another breeding project! This time Colias tyche werdandi. I did another trip up north to northern Norway this summer and managed to grab a female. She readily laid eggs on Astragalus alpinus, which i believe is the main hostplant, atleast in Norway. A couple of online sources also mentions Vaccinium uliginosum as a possible hostplant. In my experience the female refused to lay eggs on it, and the larva did not want to eat it when given to them. The larva did however easily accept Astragalus glycyphyllos in captivity!

Some lifecycle information: Total lifecycle from egg to imago was about 5 weeks. One larva completed the whole lifecycle this summer, the rest are hibernating as full grown L5.
Eggs used 6 days to hatch
Larval stage lasted 25 days, molting 4 times.
Pupal stage lasted 8 days.

Egg
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L1
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L2
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L3
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L4
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L5
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Imago
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More high res pictures over HERE
Last edited by wolf on Fri Sep 30, 2022 8:39 pm, edited 2 times in total.
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kevinkk
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Re: Colias tyche werdandi

Post by kevinkk »

Nice photography.
One can never be 100% sure about food plant acceptance.
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bobw
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Re: Colias tyche werdandi

Post by bobw »

Great piece of work! I don't know what sources gave Vaccinium as a foodplant but they're very wrong. The only Eurasian Colias that feeds on Vaccinium is palaeno, there are also a few other North American species.
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wolf
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Re: Colias tyche werdandi

Post by wolf »

bobw wrote: Wed Sep 28, 2022 3:50 pm I don't know what sources gave Vaccinium as a foodplant but they're very wrong.
I should've been more specific. I've seen a couple of online webpages that mention V.uliginosum as hostplant. I've edited the original post. But yea, i suspected it was wrong aswell.

I hope to get some pictures of the pupa next year, if my larva survive the hibernation. I unfortunately didn't get the time to take pictures of the one pupa that hatched this summer.
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Trehopr1
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Re: Colias tyche werdandi

Post by Trehopr1 »

Indeed, incredible photography and fascinating "time frames" for the different stages of life.

Would never have imagined the pupal stage only taking 8 days for the butterfly to eclose.

Keep up the good work !
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wolf
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Re: Colias tyche werdandi

Post by wolf »

Trehopr1 wrote: Wed Sep 28, 2022 6:00 pm Indeed, incredible photography and fascinating "time frames" for the different stages of life.
Would never have imagined the pupal stage only taking 8 days for the butterfly to eclose.
I do all my breedings indoors in my appartment where its usually 20-23 degrees celcius 24/7. I am pretty sure that the timespan of the lifecycle would be different if kept outside in more natural conditions.
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