| Aceria fraxini | |
|---|---|
 | |
| galls on a leaf, upperside | |
 | |
| galls on a leaf, underside | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Family: | Eriophyidae |
| Genus: | Aceria |
| Species: | A. fraxini |
| Binomial name | |
| Aceria fraxini (Garman, 1883) | |
Aceria fraxini, the ash bead gall mite, is a species of mites in the family Eriophyidae, the gall mites. [1] [2]
Range is North America, including southern Canada and most of the continental United States. [2]
Mites form numerous capsule galls, greenish-yellow in color, between leaf veins of Ash trees in the genus Fraxinus , including Fraxinus americana , Fraxinus latifolia , Fraxinus nigra , and Fraxinus pennsylvanica . [3] [4] The mites stay in the galls until late summer when host leaves mature. [5] : 50
The life cycle is a form of alternation of generations. An over-wintering generation consists only of females called deutogynes. The other generation consists of both sexes: females called protogynes as well as males. [5] : 6
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