Hainault Forest Website

Plant Galls

     Galls on Trees other than Oak

HOME PAGE  PHOTO INDEX   OAK GALLS   OTHER TREE GALLS   SHRUB GALLS  OTHER UK GALLS

FIELD MAPLE  RED PUSTULE GALL

Agent: Aceria aceriscampestris

A Mite.  Common in the forest

Photo: June 2000

FIELD MAPLE  PUSTULE GALL

Agent: Aceria macrochelus

A Mite.  Not common

Photo: August 2000

SILVER MAPLE  RED PUSTULES

Agent: Vasates quadripedes.   A mite.

A second record for Essex and a first for Hainault.   Photo: May 2002

SYCAMORE   RED PUSTULES

Agent: Aceria macrorhynchus   A mite.

Occasionally found   Photo: August 2002

SYCAMORE  FELT GALL

Agent: Aceria pseudoplatani   A mite.

Frequently found in the forest

Photo: August 2002

SPINDLE   LEAF ROLL GALL

Agent:  Eriophyes convolvens  A Mite.

Leaf edge tightly rolled.  Common

Photo: July 2005.

ASH   KEY GALLS

Agent: Aceria fraxinivorus   A Mite.

Green at first becoming brown.

Very common in 2002  Photo: July 2001

ASH   MIDRIB GALL

Agent:  Dasineura fraxini  A Midge

Occasionally found  Photo: July 2002

ASH  LEAFLET ROLL GALL

Agent:  Psyllopsis fraxini   A plant louse.

Leaflet rolled downwards, tinged with red. Common.  Photo: July 2000.

ASH  POD GALL

Agent:  Dasineura acrophila  A Midge.

Leaflet folded upwards, midrib thickened like a pea pod.   Photo: May 2005

One-leaved ASH  ROLL GALL

Agent: Psyllopsis fraxini  A plant louse

Leaflet edge rolled downwards.

Photo: May 2005

Single-leaved ASH  F. a. Veltheimii

MIDRIB GALL  Agent:  Dasineura fraxini

A midge  Photo: June 2004

ASPEN  LEAF ROLL GALL

Agent: Dasineura populeti A midge

Edges of leaf rolled upwards, hairy.

Photo: 20th August 2005.

ASPEN  PETIOLE GALL

Agent: Eriophyes diversipunctatus.

A Mite.At base of leaf, one on each side of midrib.  Photo: August 1977.

Not seen since.

ASPEN   RED PEA GALL

Agent:   Harmandia tremulae  A midge.

Frequently found   Photo: July 2002

BLACK POPLAR  SPIRAL GALL

Agent:  Pemphigus spyrothecae

An aphid.  Abundant in the forest

Photo: August 2002

BLACK POPLAR PURSE GALL

Agent:  Pemphigus bursarius   An aphid.

Rare in the forest

Photo: August 2002

BLACK POPLAR  BULGE GALL

Agent: Taphrina populina  A fungus.

Plentiful  Photo: June 2004

BLACK POPLAR  LEAF FOLD GALL

Agent: Thecabius affinis  An aphid.

Occasionally found  Photo: June 2004

BLACK POPLAR  STALKED POUCH GALL

Agent: Pemphigus populi  An aphid

Stalked pouch gall on midrib. Nationally rare. Photo: S.Sawhney.   June 2003

GREY POPLAR  SWOLLEN TWIG

Agent: Gypsonoma aceriana  A micro-moth caterpillar.   Twig contains caterpillar frass.

Photo: July 2004 

BLACK POPLAR  MIDRIB POUCH GALL Agent: Pemphigus populinigrae. An aphid

Left: upper side of leaf. Right: Lower side of leaf showing slit.   Photo: 26th June 2008.

PURGING BUCKTHORN Leaf margin rolled up and thickened. Agent: Trichochermes walkeri

A plant louse  Photo: 28 May 2005

SALLOW  YELLOW PUSTULES

Agent: Iteomyia capreae A midge.

Occasionally found   Photo: July 2002

CRACK WILLOW  KIDNEY BEAN GALL

Agent:  Pontania proxima  A sawfly

Occasionally found  Photo: May 2002

WHITE WILLOW  KIDNEY BEAN GALL

Agent:   Pontania proxima  A sawfly.

Rare in the forest  Photo: August 2002

CRACK WILLOW SHOOT TIP GALL Agent: Rabdophaga terminalis  A midge. Photograph 20 August 2005.

WHITE WILLOW LEAF EDGE ROLL GALL

Agent: Aculus magnirostris A mite. 

Photographed 20 August 2005.

Tentative identification.

CRACK WILLOW LEAF EDGE ROLLED

Agent:

Photo: 9th May 2009

WILD PLUM   LEAF EDGE PUSTULES

Agent:  Eriophyes similis  A mite

Photo: July 2002

BLACKTHORN  LEAF EDGE PUSTULES

Agent:  Eriophyes prunispinosae.

A Mite.   Common.   Photo: August 2000

BLACKTHORN  Leaf midrib PUSTULES

Agent:  Eriophyes padi  A Mite.

Uncommon   Photo: May 2004

BLACKTHORN  POCKET PLUMS

Agent:  Taphrina pruni  A fungus.

Plentiful 2005  Photo: August 2002

WHITEBEAM  PUSTULE GALLS

Agent:  Phytoptus arianus  A Mite.

Numerous pustules on upper leaf.

Photo: May 2001

WILD SERVICE TREE

ROUNDED PUSTULES

Agent: Eriophyes torminalis  A mite  

Photo: 20 May 2005

PEAR  ORANGE PATCH on leaf

Agent: Gymnosporangium sabinae

A rust fungus

Upper side of leaf.  Photo: August 2004

PEAR   ORANGE PATCH on leaf

Agent: Gymnosporangium sabinae

A rust fungus

Lower side of leaf  showing swelling.

Photo: Aug 2004.

PEAR  SMOOTH RED PUSTULES 

Agent: Eriophyes pyri   A mite

Photo: July 2004
ROWAN  PUSTULE on leaflets with opening upper or lower leaflet. Agent: Eriophyes sorbi  A mite.  Photo: 10th May 2009.

HAWTHORN  BUTTON-TOP GALL

Agent:  Dasineura crataegi  A midge.

Photo: June 2005

HAWTHORN  LEAF EDGE ROLL GALL

Agent:   Phyllocoptes goniothorax

A mite   Occasionally found.

Photo: June 2005

HAWTHORN  POCKS ON LEAF

Agent:   Aceria crataegi

An mite  Occasionally found.

Photo: June 2005

 

HAWTHORN POCKS ON LEAF (detail)

Agent:  Aceria crataegi

Exit hole on upper surface.

Photo: 21st May 2007

HAWTHORN RED BULGE and FOLD downwards, along the midrib. Agent: Dysaphis crataegi- group.

Not determined. An aphid.

Photo: 9th May 2009

  

CRAB APPLE Erineum on back of leaf.

Agent: Phyllocoptes malinus A mite.

Photo: 9th May 2009

WILD APPLE LEAF EDGE ROLL GALL

Agent: Dasineura mali A midge   

Photograph: 20 August 2005.

APPLE WOODY SWELLINGS ON BARK

Agent: Eriosoma lanigerum Woolly aphid

Photograph: 11th December 2005.

 

COMMON LIME  LEAF VEIN GALL

Agent:  Eriophyes exilis   A Mite.

A small gall found in the angle of veins.

Photo: July 2005

  

COMMON LIME LEAF EDGE ROLLED UP

Agent: Dasineura tiliae A Gall midge 

Photo: 22 May 2005

COMMON LIME Yellow or Pink blisters on upper leaf with with or pink erineum underneath.

Agent: Eriophyes leiosoma A mite

Photo: 10th May 2009

COMMON LIME PETIOLE GALL

Agent: Contarinia tiliarum  A gall midge

Photo: 11 June 2005.

COMMON LIME  RED NAIL GALLS

Agent:  Aceria lateannulatus.  A Mite.

Rare in the forest  Photo: May 1994.

COMMON LIME  NAIL GALLS

Agent:  Eriophyes tiliae.  A mite.

Frequently found   Photo: June 2001

ALDER BLISTER and ERINEUM under leaf. Agent: Not determined. A mite.  Photo: 10th May 2009

ALDER  VEIN ANGLE GALL

Agent:  Eriophyes inangulis  A mite

Photo: June 2003

ENGLISH ELM  PUSTULE GALLS

Agent:  Aceria ulmicola.  A Mite.

Numerous pustules on upper surface of leaf.   Photo: July 2004.

WYCH ELM FIG GALL  Agent: Tetraneura ulmi  An aphid.

The leaf on the left is stunted.  Photos: 21st May 2007.

WYCH ELM LEAF ROLL GALL

Agent: Eriosoma ulmi  An aphid

Photo: 21st May 2007

ENGLISH ELM  BAG GALL

Agent:  Eriosoma lanuginosum   An aphid

Leaf forming large pouch containing waxy aphids. Found on the golf course.

Photo: July 2004

BEECH  TIGHT UPWARD ROLL GALL

Agent:  Acalitus stenapsis   A mite

Hainault Lodge  Photo: June 2003

BEECH  HAIRY GALL

Agent:  Hartigiola annulipes  A Midge

Uncommon  Photo: August 2000

BEECH BLISTERS and white ERINEUM between leaf veins on underside.

Agent: Aceria fagineus  A mite.  Photo 9th May 2009

HORNBEAM  MIDRIB GALL

Agent:  Zygobia carpini  A midge

Rare in the forest  Photo: July 2002

HORNBEAM  LEAF VEIN GALL

Agent:  Aceria macrotrichus   A Mite.

Veins under leaf distorted.  Rare.

Photo: June 2001

HORNBEAM

GALLS IN MIDRIB VEIN ANGLE

Agent: Aceria tenellus   A mite   

Photo: August 2004

BIRCH BLISTER with ERINEUM underneath. Agent: Aculus leionotus. A mite.

Photo: 9th May 2009

BIRCH BIG BUD GALL

Agent: Acalitus calycophthirus A mite.

Photo: 9th May 2009

SILVER BIRCH  SEEDS GALLED IN CATKIN

Agent: Samudobia betulae  A midge   Photo: July 2004

Photo shows two normal winged seeds, 4mm wide.

SILVER BIRCH  SEEDS GALLED IN CATKIN

Agent: Samudobia tarda  A midge   Photo: July 2004

Photo shows two normal winged seeds. New Essex record.

NOTE Samudobia betulae (above left) has a round window pit in the top half of the seed, and the seeds have reduced wings. Samudobia tarda (above right) has an indistinct window pit in the lower half  and the wings are almost absent.

WHITE WILLOW ROSETTE  OR CAMELLIA GALL

Agent: Rabdophaga rosaria  A midge

  Terminal leaves distorted to form a rosette.

Photo: 29th July 2006. By the lake.

CRACK WILLOW ROSETTE  OR CAMELLIA GALL

Agent: Rabdophaga rosaria  A midge

Terminal leaves distorted to form a rosette

Photo: 20th July 2006. By the lake.

SILVER BIRCH  BIRCH ROOT GALL Agent: Agrobacterium tumefaciens  A soil bacterium  Photo: 25th February 2007. The Heathland.

The gall is 11cm in width and 8 cm depth like a small swede.

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