Iv'e found the culprit---Onion Problem

[vron]

Hi everyone, I think I might have found the culprit.
I got out my magnifying glass & went exploring, this is what I found.

Nothing apparent in the bulb or roots, but upon slicing open each leaf I found these little 3mm long pupae, brown in colour as you can see, one still in situ, the other I removed from inside a mature leaf.

What pest do they belong to, how shall I proceed & do I destroy the entire crop

[vron]

here are the last 3pics

[Two_Sheds]

have you got a Macro button on your camera (tulip icon?)

you'll get better close ups.

[Two_Sheds]

I think you have Allium Leaf Miner there. I have Leek Moth maggots.

The Leaf Miner maggot doesn't have legs, the Leek Moth maggot does.


The pupal stage of the leek moth is about 10mm long, and is a cream coloured, silk cocoon; the pupae of the Allium leaf miner are about half this size, and are orange brown in colour
http://www.eastmidlands-allotments.c.../015_pests.asp

more info here: http://www.lichfield-allotments.co.uk/alliumleafm.htm

[SlugLobber]

have you got a Macro button on your camera (tulip icon?)

you'll get better close ups.

Well I never! I didn't know that was what it was for! Sorry, can't help with the pest problem, but thanks, Two Sheds!!

[vron]

Two Sheds, don't have a digi camera, did these on my webcam. Here are some more, don't know if they are any clearer. As I said they are pupae 3mm long and found inside the leaves.
The inside of the leaf had been eaten away and there was a small hole on the outside of the leaves????
Will try to get some more tomorrow when I go up to the lottie again. What do you think it is.

[Two_Sheds]

What do you think it is.

I think it's allium leaf miner, based on the info in my post above ...

[dirtyknees]

hi von ,just noticed your dillemma,,,i have one sounding very similar,i have just had to destroy my entire crop,over winter from sets ,plus everything ive put in this year,i have been finding brown pupa throughout the layers,plus the odd white grub,ive also got pupa in my over winter garlic too,the gentleman on lotment next to me said onion fly,but unsure aving read your comments,look for twisted growth,thats a good indicator of problems,thats what showed on this years,,,good luck,,happy digging

[Two_Sheds]

i have been finding brown pupa throughout the layers,...the gentleman on lotment next to me said onion fly

Onion fly maggots are in the bulb, not the foliage. Brown pupa? Sounds like allium leaf miner for you too.