Aphid casts/skins on Hydrangea


Joined
Nov 30, 2021
Messages
2
Reaction score
1
Location
Christchurch
Country
New Zealand
We have been getting a bunch of small white cotton-looking things on the top surface of leaves on our Hydrangea plants (it's summer here). They do not move or fly and appear to be dead but they seem to have legs of some kind. It seems the most likely thing they are is aphid casts / skins. My question is - how do they come to be on our plants - are they eggs that have hatched. If so, what do they look like before they hatched i.e. there's nothing obvious on the leaves except the white stuff and it just appeared out of nowhere.
 

Attachments

  • IMG_20211126_092938.jpg
    IMG_20211126_092938.jpg
    143.3 KB · Views: 17
Ad

Advertisements

Joined
Feb 2, 2014
Messages
9,589
Reaction score
4,479
Location
Tarpley Tx
Hardiness Zone
8b
Country
United States
Yep, those are aphid casts. And yes they were hatched from eggs but how they got there is anybody's guess, but, they probably were blown in, laid their eggs and started living on your plant. There are many colors of aphids so Google aphid images to know what to look for.
 
Ad

Advertisements

Joined
Aug 10, 2021
Messages
2,878
Reaction score
1,006
Location
California
Country
United States
Greetings, welcome to the Forums.

Those skins are the cast exoskeletons of some hemimetaboulous insect, either aphids or something similar. Altough aphids mostly give 'live-birth' to asexual clones, many species do overwinter as eggs that hatch in Spring. These could be the exoskeletons of that first Spring generation. They have likely scattered to chosen feeding locations either on the Hydrangea or another plant. You may encounter their clonal descendants later in the season.
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads


Top