Trichoplusia ni! A good feeder moth

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agent A

the autistic flower mantis
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hey folks

so recently I began rearing Trichoplusia ni, a generalist noctuid moth that is a great feeder. Approximately twice the size of a waxworm moth, these hardy moths are happily accepted by a number of mantis species

Here are adults in a breeding cup. There is a nectar dish at the bottom and a coffee filter at the top for oviposition. I put 10 in each cup

20220120_163038.jpg


Freshly Eclosed Adults
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Larval setup

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hatchlings

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mature larvae

20211231_131409.jpg


the eggs hatch in 3-4 days, the larvae develop for approximately 3 weeks, and they spend about 10 days as pupae

I rear them on artificial diet. I will update folks on the best AD for them but so far it looks like this stuff:

https://www.educationalscience.com/the-manduca-sexta-hornworm-microwave-cookie-dough-artificial-diet-50g-adt204

I make it a little runnier than the recipe calls for

Also i am going to experiment with this stuff

https://www.insectrearing.com/product/general-purpose-lepidoptera/

I have plenty of pupae for sale too

 
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Introvertebrate

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I get the impression that Painted Lady medium is essentially cookie dough of some kind.  I don’t know how they would be as feeders.

 

agent A

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timetopupationbydiet.jpeg
survivalbydiet.jpeg
pupalwtbydiet.jpeg


Please note that the low survival rate in the “hornworm instant agar” group means that the pupal weight and time to pupation categories are skewed. One-way ANOVAs run on the effect of diet on average pupal weight, percent survival, and time to pupation showed significant effects, with p-values of 2.77e-4, 2.11e-13, and 3.82e-13, respectively. There was no correlation between the cost of the diet and any of these metrics, with linear regression models for the three measures giving fixed r-squared values of 0.0469, 0.3299, and 0.2995, respectively. Larvae reared on the hornworm instant diet pupated on average 3 days sooner than those reared on the pinto bean diet, were on average 0.01g lighter at pupation, and had nearly twice the survival rate. Given the fact that this is a prolific species and that the hornworm instant cookie dough diet is nearly 8 times the cost of the pinto bean diet, more comparison is needed. I will now compare this diet to the frontier agricultural services general Lepidoptera diet.

 

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