Tuesday, 20 November 2012

Pistols at dawn

The larval cases of Coleophora anatipennella, aka the Pistol Case-bearer, or at least the feeding signs it leaves behind, can be relatively easy to find at the moment, for as long as the leaves last anyway.  The examples below were found on Blackthorn.

Coleophora anatipennella feeding signs on Prunus
Coleophora anatipennella feeding signs on Prunus

Coleophora anatipennella feeding signs

If you do manage to find the feeding signs, and the case is not present on the leaf, it is worth a close inspection of the nearby leaves and particularly in the leaf axils, as the case can often be found here.

Coleophora anatipennella larval case on Prunus
Coleophora anatipennella

Coleophora anatipennella

Dave

Sunday, 4 November 2012

Stigs to the power of 5

Still plenty of leaf mines to be found - here's a quartet of Stigmella species from recent days...

Stigmella samiatella
Stigmella samiatella leaf mine on Castanea

Stigmella perpygmaeella
Stigmella perpygmaeella larva and leaf mine on Crataegus


Stigmella floslactella
Stigmella floslactella leaf mine on Corylus

Stigmella lemniscella
Stigmella lemniscella leaf mine on Ulmus

Stigmella hemargyrella
Stigmella hemargyrella leaf mine on Fagus

Dave

Monday, 22 October 2012

Early stages: Strophedra weirana

Another often overlooked and under recorded species can be found in its larval stage on Beech right now.  The feeding signs are quite obvious, so one worth keeping an eye out for.

Larval feeding signs
Strophedra weirana larval feeding signs

Larva in opened spinning
Strophedra weirana larva in spinning on Beech

Monday, 15 October 2012

Early stage excesses

To say that the last few weeks have been productive in terms of early stage finds - mainly leaf miners but also cases and galls - would be an understatement.

Whilst we all seem to have suffered a dearth of adults to the traps this year, with tales of crashes in numbers of usually abundant species becoming clear as we all start to analyse the 2012 figures in detail, here in East Kent I am falling over early stages at every turn.

By way of illustration, here are some figures from the last 15 days i.e. October so far:

213 out of 320 total records (66%) are for early stages
4907 out of 5160 total individuals(95%) are for early stages
75 species recorded as early stages

The most abundant early stages are:
Phyllonorycter coryli - 1126 mines
P. platani- 1505 mines
P. corylifoliella - 355 mines

Other finds include Phyllocnistis xenia, Stigmella aceris, Bucculatrix thoracella, Phyllonorycter platanoidella, Coleophora laricella, Ectoedemia heringella, Parornix fagivora, Strophedra weirana

Phyllocnistis xenia
Phyllocnistis xenia leaf mine

Stigmella aceris
Stigmella aceris leaf mine on Acer campestre

Parornix devoniella
Parornix devoniella leaf mine and fold

Stigmella microtheriella Stigmella microtheriella larva in leaf mine on Hazel

Dave

Sunday, 7 October 2012

Miners, miners everywhere

The profusion of leaf miners is still very much in evidence; just this last week have totalled around 2000 individuals of a wide range of species from many food plants. Here's a few of the latest finds:

 Stigmella tityrella
 Stigmella tityrrella mine

Parornix fagivora
Parornix fagivora -  leaf fold (3) Parornix fagivora -  leaf fold (2)

Bucculatrix thoracella
 Bucculatrix thoracella minesBucculatrix thoracella mines (2)

Stigmella basiguttella 
Stigmella basiguttella

Friday, 21 September 2012

Early Stages: Hawthorn miners in abundance

All of the hawthorn hedgerows I look at are currently covered in mines of a range of species, here are four species from the last couple of days:

Ectoedemia atricollis
 Ectoedemia atricollis tenanted mine on Hawthorn (2)
Ectoedemia atricollis tenanted mine on Hawthorn

Parornix anglicella
 Parornix anglicella - leaf fold on Hawthorn (2)Parornix anglicella - leaf fold on Hawthorn

Phyllonorycter oxyacanthae Phyllonorycter oxyacanthae mine on Hawthorn Phyllonorycter oxyacanthae mine on Hawthorn - underside

Phyllonorycter corylifoliella Phyllonorycter corylifoliella mine on Hawthorn Phyllonorycter corylifoliella leaf mine

Dave

Wednesday, 19 September 2012

Early stages: Adaina microdactyla

The 'bore holes' and associated galls caused by the larvae of this species are relatively easy to find right now; I found a handful in 2-3 minutes on my way to pick up the kids from school.

Adaina microdactyla - gall on Hemp-agrimony

Adaina microdactyla - gall on Hemp-agrimony (2)


Opening up the stems gently will generally reveal the larva inside...
Adaina microdactyla - larva in Hemp-agrimony stem

Adaina microdactyla - larva in Hemp-agrimony stem (2)

Dave