Eriophyes inangulis
| Eriophyes inangulis | |
|---|---|
| |
| Mature midrib galls on an alder leaf | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Family: | Eriophyidae |
| Genus: | Eriophyes |
| Species: | E. inangulis
|
| Binomial name | |
| Eriophyes inangulis | |
Eriophyes inangulis is a mite that forms the alder vein angle gall.[3] It develops in a chemically induced gall; a sub-spherical distortion rising up from the upper surface of the leaves of alder trees Alnus glutinosa along the midrib. Synonyms are Eriophyes laevis inangulis, Phytoptus laevis, and Cephaloneon pustulatum.[3]
The physical appearance[edit]
The gall's appearance on the upper surface is sub-spherical, smooth and may vary in colour from pale yellow-green to deep red. The adult mite lives on alder tree sap, sucked from the cell tissues. The galls cluster along the midrib in the angle of the veins.[4][5] The wide opening and interior on the lower epidermis and is lined with large numbers of small hairs. Galls may be so numerous that the leaf expansion is inhibited.[3][4]
Infestations of alder vein angle galls[edit]
The galls induced appear not to affect the health of trees infected with these mite species and no practical way of controlling or preventing them exists.[6]
References[edit]
- ^ "World of Galls Online". Archived from the original on February 20, 2015. Retrieved July 5, 2012.
- ^ F. B. Stubbs, ed. (1986). Provisional Keys to British Plant Galls. British Plant Gall Society. p. 14. ISBN 0-9511582-0-1.
- ^ a b c Arnold Darlington (1975). The Pocket Encyclopaedia of Plant Galls in Colour. Poole, Dorset: Blandford Press. pp. 144–145. ISBN 0-7137-0748-8.
- ^ a b M. Redfern & P. Shirley (2002). British Plant Galls. FSC Publications. p. 279. ISBN 1-85153-214-5.
- ^ "Trees for life ". Archived from the original on March 1, 2014. Retrieved July 5, 2012.
- ^ "Nail Gall". Gardeners World. Retrieved July 5, 2012.