Very interesting, thanks.

@geoffwilkinson.bsky.social Any thoughts about this find?

Closer look at eardrumlike structure on female Japanese dinidorid stinkbugs (legs?) revealed unknown symbiotic organ. Here stinkbugs nourish symbiotic fungi, which they rub over their eggs. Fungi grow & protect eggs from wasps (Trissolcus brevinotaulus) looking to lay their own offspring inside.

Thanks for your interesting background info. Age of statoblasts recorded in last year from R Foss is not clear from NEYEDC account. If eDNA data exist for the Foss it may help. Perhaps the source of info cited by NEYEDC (ie Lincs Chalk Stream project), can clarify. @teamneyedc.bsky.social

Interesting. Please post your findings.

Dettener lists 28 different chemicals (including steroids) in the prothoracic defence glands of this species. He notes it can be amphibious with steroids against fish predators and possibly an alkaloid against small warm-blooded vertebrates!

That is very interesting.Thanks for providing more info. I thought a lot of dytiscids can secrete steroids.

Thanks