Asteromyia tumifica
(Beutenmüller, 1907)
Asteromyia tumifica is a in the that induces blister on goldenrod stems. The maintains a distinctive symbiotic relationship with , which are transported by females in the and transferred during -laying. These fungi form a black, hardened protective cast around mature within the gall.
Pronunciation
How to pronounce Asteromyia tumifica: /ˌæstəˈroʊmiə tjuːˈmɪfɪkə/
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Identification
Blister appear as swellings on green stems at the base of goldenrod plants. Mature galls contain a black, hard fungal cast surrounding the —a feature unique to this among Asteromyia. The gall structure and fungal association distinguish it from other goldenrod .
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Habitat
Associated with goldenrod (Solidago) plants in open, herbaceous environments where goldenrod grows.
Distribution
Recorded from Vermont and other parts of the United States.
Host Associations
- Solidago - obligateInduces blister on green stems at base of plants
Behavior
Females transport fungal internally in the and inoculate stems with fungal spores simultaneously with insertion.
Ecological Role
Acts as a inducer on goldenrod; the fungal provides protective structure for larval development.
Similar Taxa
- Other Asteromyia speciesA. tumifica is distinguished by its blister on stems (versus leaf or other tissue galls) and the presence of the black fungal cast around .
More Details
Fungal symbiosis
The was among the first documented cases of - in . The fungal partner forms a hardened, melanized structure that protects the from desiccation and possibly .