''Tamalia coweni'', also known as the manzanita leaf gall aphid and the fold-gall aphid, is a species of

aphid Aphids are small sap-sucking insects in the Taxonomic rank, family Aphididae. Common names include greenfly and blackfly, although individuals within a species can vary widely in color. The group includes the fluffy white Eriosomatinae, woolly ...

in the family

Aphididae The Aphididae are a very large insect family in the aphid superfamily ( Aphidoidea), of the order Hemiptera. These insects suck the sap from plant leaves. Several thousand species are placed in this family, many of which are considered plant/cr ...

. ''Tamalia coweni'' induces galls on most species of

glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ...

manzanita Manzanita is a common name for many species of the genus '' Arctostaphylos''. They are evergreen shrubs or small trees present in the chaparral biome of western North America, where they occur from Southern British Columbia and Washington to O ...

tree. This aphid actually induces two types of galls: a midrib or margin leaf gall, and a less common inflorescence gall. ''Tamalia coweni'' is common on the Pacific coast of North America and east to Nevada and Colorado. '' Tamalia inquilina'', an

inquiline In zoology, an inquiline (from Latin ''inquilinus'', "lodger" or "tenant") is an animal that lives commensally in the nest, burrow, or dwelling place of an animal of another species. For example, some organisms, such as insects, may live in the ...

of this species, is found in the Californias. Recently described species '' Tamalia glaucensis'' induces leaf galls on big-berry manzanita specifically.

References

Aphididae Insects described in 1905 Gall-inducing insects {{sternorrhyncha-stub