ELACHISTIDAE.


596 Elachista poae mine and larva on Reed Sweet-grass, in the canal at Copley, Apr.10th 2012. A typically long, narrow and rather inconspicuous corridor. Around half a dozen mines were found in total in a relatively small patch of reeds suggesting it could well be a common species within Calderdale. 

596 Elachista poae mine and larva, Apr.11th 2012. Details as above.

596 Elachista poae pupa, Apr.11th 2012. Found on Reed Sweet-grass in the canal at Copley. A blackish pupa which was originally enclosed in a whitish cocoon. 

596 Elachista poae, a dead larva and parasitoid cocoon, Apr.14th 2012. I believe this genus is more susceptible than usual to falling victim to parasitic wasps, as this larva has done.

Two weeks later and I managed to rear this parasitic wasp from the above cocoon. It's a male Pholetesor viminetorum, which is a parasitoid of several Elachista species. Identification courtesy of Dick Askew.

596 Elachista poae, Apr.20th 2012. After 10 days this emerged from the pupa illustrated above. One of the most satisfying aspects of rearing leaf miners is being able to contribute to sites such as UK leaf miners and UK moths such as here: http://ukmoths.org.uk/show.php?id=6671

596 Elachista poae, same moth as above. A few minutes after posing for its photo it began this strange behaviour of lifting all four wings in the air with the antennae going berserk. I assume this is to release pheromones which, in the case of females, is to attract a mate and in the case of males to show a potential mate how "attractive" they are.

609 Elachista maculicerusella, a tenanted mine on Reed Canary Grass, Tag meadow, Apr.3rd 2012. There are four species (at least?) of reed in the Cromwell Bottom area so there is definitely scope for investigating which Elachistids use them.

609 Elachista maculicerusella, a pre-pupal larva, Apr.6th 2012. Now fully grown the larva has vacated the mine and spun itself to the outside of the reed. It's now just hours from pupating.

 609 Elachista maculicerusella, pupa, Apr.7th 2012. Pupation successful, I  just hope it's not parasitized as members of this family often are.

609 Elachista maculicerusella, Apr.18th 2012. Reared from the larva and pupa illustrated above. Emergence 11 days after pupation.

610 Elachista argentella, All Saints' graveyard, May 30th 09. Captured by day and my only record.

611 Elachista triatomea, the old sewage works at West Vale, July 7th 06. A field observation. My only other record is of one at Copley meadow on July 1st 08.

631 Cosmiotes freyerella in the garden, July 22nd 09. Captured by day and the only record.

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