• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Ron McLeod
  • Junilu Lacar
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • Jeanne Boyarsky
  • Rob Spoor
  • Bear Bibeault
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Piet Souris
  • Carey Brown
  • Stephan van Hulst
Bartenders:
  • Frits Walraven
  • fred rosenberger
  • salvin francis

Caterpillar Tracks?

 
Marshal
Posts: 73257
332
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I don't think the caterpillar was too pleased about dying like this. I think I know what is going on, but I have never seen it before in real life death.
DyingCaterpillar2x.jpg
[Thumbnail for DyingCaterpillar2x.jpg]
 
Saloon Keeper
Posts: 23878
162
Android Eclipse IDE Tomcat Server Redhat Java Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The fire ant is the scourge of the Southern USA. Originally from Argentina, it made its way up through Mexico, into Texas and from there around the Gulf of Mexico into Florida.

If you'd ever felt their bite, you'd know where the name comes from.

Having no natural predators in its new home, it took over much of the South. But in recent years, researchers have experimented with importing its natural enemies. Something that we've learned to do very carefully these days.

It's a small wasp and the mere appearance in the sky makes fire ants run for cover. Which obviously reduces their productivity. But the worst is what happens to the luckless ant who doesn't escape.

The wasp lays an egg in the ant's head, which develops into a larva. The larva proceeds to basically hollow out the ant's head from the inside until finally the head simply drops off.

Insects have a whole raft of uniquely horrible ways to prey upon each other.
 
Campbell Ritchie
Marshal
Posts: 73257
332
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Within a couple of hours, the little grubs had hidden themselves in silk cocoons. It is too dark to get another photo now.
 
Campbell Ritchie
Marshal
Posts: 73257
332
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have found this FB page with more information: webpage. It tells you the kind of wasp and the kind of butterfly: Pieris brassicae = large white, one of our commonest butterflies. I think I have the same kind of caterpillar.
 
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
government encourages the wasps eating caterpillars

Here is video to make you vomit.

 
Campbell Ritchie
Marshal
Posts: 73257
332
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I think I saw the same video on Permies and it didn't make me vomit. It did explain what the caterpillar is doing now; somehow, presumably via some sort of hormone, the wasps have persuaded the caterpillar to spend its last days guarding them. The last photo shows it head down, so it is moving and isn't actually dead yet.
DyingCaterpillar2021-07-04x.jpg
[Thumbnail for DyingCaterpillar2021-07-04x.jpg]
 
Campbell Ritchie
Marshal
Posts: 73257
332
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Prof  Hans Smid's website. Vimeo page with same video on. Scroll down to third video. As Bunbury suggests, only suitable for people with a strong stomach. After the emergence of the wasp grubs, the video runs faster than in real life.
* * * * * * * * * * * *
The wasps have fledged and flown the nest. The photo was taken on Wednesday. I believe the little critters are called Cotesia glomerata.
Also posted on Permies

[edit]A spelling correction and corrected link for Vimeo
WaspsHatching7x.jpg
[Thumbnail for WaspsHatching7x.jpg]
 
reply
    Bookmark Topic Watch Topic
  • New Topic