Leaf Gall Inhabitants Revealed!

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brentbristol
Posts: 180
Joined: Tue Apr 09, 2013 4:59 pm
Location: New Berlin WI

Leaf Gall Inhabitants Revealed!

Post by brentbristol »

Mid August there were many tree leaves heavily infested with galls. I've often wondered what was inside such structures and a brief internet search primarily suggested mites or aphids. A trip down the stacking rabbit hole ensued. Here is the initial leaf:
iPhone photo of leaf that gall was removed from.
iPhone photo of leaf that gall was removed from.
I pried one open using finger nails which revealed a very tiny nymph of that appeared to be more aphid like than mite.

Camera: Canon 7D II
Lens: Nikon Microscope Objective MRN70100 BE Plan 10X/0.25
Lens Tube DIY With Raynox DCR-150 Diopter
Macro Rail: Cognysis Stackshot
Step Size: 6 microsteps (~0.496 microns per microstep)
Number of Frames: 699
ISO 100
Shutter Speed: 1/200th sec (used instead of 1/250th sec to avoid the occasional black frame)
Illuminated with two Canon 580 EX II flashes triggered by the on-camera flash as a master. Light contribution of the on-camera flash was turned off.
Processed with Canon DPP4
Stacked with Zerene Stacker: PMAX
Gall Encased Aphid Nynph Small.jpg
100% view: https://flic.kr/p/2oY5Txp

Played around with Zerene's stereo view capability:
Gall Encased Aphid Nynph X-eyed Stereo small.jpg
100% view: https://flic.kr/p/2oY5YZB

Individual frames showed small amounts of CA which seemed to vanish in the integrated image. The raw frames were processed without any CA removal.
The trouble with quick and dirty is that the dirty remains after the quick is gone.


brentbristol
Posts: 180
Joined: Tue Apr 09, 2013 4:59 pm
Location: New Berlin WI

Re: Leaf Gall Inhabitants Revealed!

Post by brentbristol »

Not at all sure! It might of helped if I had taken a photo of a leaf that didn’t have galls for plant ID purposes. Unfortunately I’m a good distance away from there now.
The trouble with quick and dirty is that the dirty remains after the quick is gone.

rjlittlefield
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Re: Leaf Gall Inhabitants Revealed!

Post by rjlittlefield »

Sym P. le wrote:
Sat Aug 26, 2023 11:48 am
Hackberry Psyllid?
Certainly matches nicely the images of the larvae at https://www.onlinepestcontrol.com/what- ... -psyllids/ and https://bugguide.net/node/view/436032/bgimage .

Structure of the gall itself seems a little different from what's shown there.

Stereo works well.

--Rik

brentbristol
Posts: 180
Joined: Tue Apr 09, 2013 4:59 pm
Location: New Berlin WI

Re: Leaf Gall Inhabitants Revealed!

Post by brentbristol »

That’s it! Thank you Sim P.le and Rik!
The trouble with quick and dirty is that the dirty remains after the quick is gone.

Beatsy
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Joined: Fri Jul 05, 2013 3:10 am
Location: Malvern, UK

Re: Leaf Gall Inhabitants Revealed!

Post by Beatsy »

I spotted a few leaf galls in my garden the other day. I wondered what might be inside, but did nothing about it at the time. You saved me the effort :D

An excellent post, thanks.

brentbristol
Posts: 180
Joined: Tue Apr 09, 2013 4:59 pm
Location: New Berlin WI

Re: Leaf Gall Inhabitants Revealed!

Post by brentbristol »

Thank you Beatsy.
The trouble with quick and dirty is that the dirty remains after the quick is gone.

colohank
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Joined: Sat Jul 24, 2021 6:07 pm
Location: Fruita, Colorado, USA

Re: Leaf Gall Inhabitants Revealed!

Post by colohank »

Yep, that looks like Hackberry Nipple Gall, caused by a psyllid. It's an every-year occurrence in my Hackberry, but I've never seen a single leaf as heavily infested as in your first photo. The infestation apparently doesn't harm the tree, but it's unsightly, so I once asked a local nurseryman if there was a way to get rid of it. He said, "Yes, cut down the tree."

MarkSturtevant
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Location: Michigan, U.S.A.
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Re: Leaf Gall Inhabitants Revealed!

Post by MarkSturtevant »

Galls are interesting, especially the ones that harbor insects (at least I think so). A nice example are the numerous goldenrod galls. These will harbor a fly larva, and the adult fly is lovely and is possibly a jumping spider mimic.
Mark Sturtevant
Dept. of Still Waters

brentbristol
Posts: 180
Joined: Tue Apr 09, 2013 4:59 pm
Location: New Berlin WI

Re: Leaf Gall Inhabitants Revealed!

Post by brentbristol »

Thanks Mark…I will have to look for these. Plenty of Goldenrod around!
https://hort.extension.wisc.edu/articl ... olidagnis/
The trouble with quick and dirty is that the dirty remains after the quick is gone.

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