Alert: Email will not work this weekend and some downtime expected. Learn more

JungleDragon is a nature and wildlife community for photographers, travellers and anyone who loves nature. We're genuine, free, ad-free and beautiful.

Join

Hypera rumicis - Teneral beetle still in cocoon Normally the beetle's eclosure from the pupal skin all happens inside the cocoon so that the teneral beetle remains protected while hardening. Only after it is fully ready it will (be able to) chew through the tough cocoon and walk away into the world.  Cocoon,Curculionidae,Hypera,Hypera rumicis,Hyperinae,Teneral,rumicis Click/tap to enlarge Promoted

Hypera rumicis - Teneral beetle still in cocoon

Normally the beetle's eclosure from the pupal skin all happens inside the cocoon so that the teneral beetle remains protected while hardening. Only after it is fully ready it will (be able to) chew through the tough cocoon and walk away into the world.

    comments (4)

  1. This is beautiful! Posted 9 months ago
    1. Hi Lisa, yes ... very intricate "golden cage" and surprisingly strong(!) Here is what the teneral beetle looks like when some bad, bad boy cuts it out of the cocoon to get better look:
      Hypera rumicis - Pupa and teneral beetle Te get a better look, I removed a pupa from its "cage" (cocoon) - very tough material! ...<br />
Normally pupa and teneral beetle will remain in the cocoon for protection<br />
https://www.jungledragon.com/image/71588/hypera_rumicis_-_teneral_beetle_still_in_cocoon.html Curculionidae,Hypera,Hypera rumicis,Hyperinae,Pupae,rumicis,teneral
      Posted 9 months ago
      1. Oh, how adorable! I'm guessing they are not sclerotized enough for their own defenses? Posted 9 months ago
        1. Well, like most/all insects these are quite soft and vulnerable while still teneral/fresh, but normally these enjoy the protection of the cocoon while hardenig. Also, I imagine (pretty sure really) that there is no way the beetle will be able to chew through the cocoon until the mouth parts are fully hardened. But yes, also once fully hardened and after leaving the cocoon I would estimate Hypera to be on the softer side of the average beetle/weevil. Here is what the species looks like fully hardened/coloured (except for top left maybe):
          Hypera rumicis - Imagos from cocoons In 2008 I took in some cocoons of Hypera rumicis and let the beetles mature at home to document this part of the development:<br />
https://www.jungledragon.com/image/71587/hypera_rumicis_-_cocoons_with_pupae_inside.html<br />
https://www.jungledragon.com/image/71588/hypera_rumicis_-_teneral_beetle_still_in_cocoon.html<br />
https://www.jungledragon.com/image/71586/hypera_rumicis_-_pupa_and_teneral_beetle.html<br />
 Curculionidae,Hypera,Hypera rumicis,Hyperinae,rumicis

          Posted 9 months ago

Sign in or Join in order to comment.

Hypera rumicis is a species of true weevil in the family of beetles known as Curculionidae.

Similar species: Beetles
Species identified by Pudding4brains
View Pudding4brains's profile

By Pudding4brains

Public Domain
Uploaded Dec 24, 2018.