miked's picture

_MG_1804 rolled leaves

Observed: 11th June 2012 By: miked
iSpot team
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what is causing these rolled leaves and deformed flowers on the hordeum secalinum also similar effect on anthoxanthum elsewhere in meadow.

Species interactions

No interactions present.


allrounder's picture

Possible cause

Could it be weedkiller? You say it's in a meadow so it may be due to natural causes rather than man made. I've seen similar type occurrences but are usually along farmland field edges.

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miked's picture

Its natural causes, no

Its natural causes, no pesticides used in this protected area. I unrolled some leaves but could not find anything inside.

raikes's picture

cranefly larvea?

cranefly larvea?

miked's picture

I thought cranefly larvae

I thought cranefly larvae live in the soil?

miked's picture

Am now back in milton keynes

Am now back in milton keynes but if there are any ispotters up in east cottingwith and who would like to take some more of the grass stems apart looking for these mites then that would be useful.
Might be good to have an 'alert' page on ispot where people can go out and check. the location I gave is correct to about 5m accuracy so should be quite easy to refind these bits of grass, the deformed ones were common.
Checking on nbn this mite has only been noted in a few places in uk perhaps due to under recording.

miked's picture

Have now found same effect on

Have now found same effect on hordeum secalinum down here near Milton Keynes and collected samples but still not found culprit, only thing I found was one aphid.