Photo 79097, (c) Ken-ichi Ueda, some rights reserved (CC BY-NC)

6780764767_58f00b78f9
Attribution © Ken-ichi Ueda
Cc-by-nc_small some rights reserved
Source Flickr
original http://www.flickr.com/photos/18024068@N00/6780764767
Associated observations

Photos / Sounds

What

beaked twig gall wasp Disholcaspis plumbella

Observer

kueda

Date

January 28, 2012 11:22 AM PST

Description

So imagine a very small wasp lands on your arm and, unbeknownst to you, inserts its ovipositor beneath your skin and inserts a few tiny eggs. The eggs release chemicals that command your body to grow a huge, pustulate turnip on your arm, within which the eggs hatch into little maggots, which in turn replicate asexually for a few generations until some of them turn into adult wasps, at which point they bore out of your arm turnip and fly away.

Aren't you happy you're not an oak tree?

I believe this was growing on Quercus berberidifolia, but it was also at the Donner cabin site, so it could be some weird cultivar.

Sizes