Field Maple - Acer campestre

Heterarthrus wuestneii

Periphyllus aceris

Periphyllus aceris aphids live on the underside of Acer species, especially Norway Maple, but also on Field Maple. The alates (winged adults) have widely separated broad black bands on the abdomen which helps with identification. The alate body length is  3.2 to 4.5 mm.  The apterae (wingless forms) are yellow-green and can be much more difficult to identify to species.

Common Maple Aphid

The Common Maple Aphid (Periphyllus testudinaceus) is associated with Maple sprecies. In the winged form of this aphid (alate) the pterostigma on the wing is brown, rather than black.

Nut Scale

Nut Scale (Eulecanium tiliae) affects various woody plants including trees and shrubs such as Hawthorn, Oak, Ash, Hornbeam, Field Maple and fruit trees such as Apple and Pear.

Etainia louisella

The larva of the moth Etainia louisella mines in the seeds (samaras or 'keys') of Field Maple forming an irregular gallery commencing in the wing and concluding in the seed itself.

Stigmella aceris

The larva of the moth Stigmella aceris mines the leaves of Field Maple and Norway Maple making a gallery mine almost filled with coiled greenish frass; later on the frass darkens.

Phyllonorycter acerifoliella

The larva of the moth Phyllonorycter acerifoliella mines the leaves of Field Maple. The mine is tentiform and nearly always at the leaf edge or leaf tip, folding the leaf over. Occasionally it can be found on the leaf blade.

Caloptilia semifascia

Caloptilia semifascia is a small moth with a wingspan of 10 to 12 mm. The angled light streak starting at the leading edge of the forewing is characteristic, but it can be obscured on darker specimens. The larva mines the leaves of Sycamore, Field Maple and Norway Maple. The early mine is a gallery leading to a squarish blotch. It later forms up to three successive tubes or cones by folding the tips of leaves downwards . The moth must be bred to identify to species.

Acericecis campestre

The larvae of the gall midge Acericecis campestre gall the leaves of various members of the family Sapindaceae which include Maples and Sycamore. A single larva lives in a small depression at the underside of the leaf.  The upper side has a corresponding small bulge, less than 1mm highwhich is surrounded by a pale yellowish circle. After the larva has vacated the gall, a yellow spot remains then eventually withers. The larva is whitish, almost hyaline, short and squat. 

Aceria macrocheluserinea agg.

The Aceria macrocheluserinea agg. mites cause an erineum to form on Field Maple (Acer campestre), usually on the leaf underside.  The mites live amongst the hairs of the erineum, which is white to begin with, then pink and then brown; the individual hairs (use a hand lens) are mushroom shaped with rounded bead-like tips.  

Aceria myriadeum

The mite Aceria myriadeum causes small red pustule galls on the upperside of the leaves of Field Maple

Aceria macrochela

Aceria macrochela is a gall mite that causes solitary galls to form on the leaves of Field Maple. The galls are seen more often than the mite that causes them. The gall is rounded, 2 to 4 mm across, with hard walls often in angle between veins; inner surface with many-celled hairs.