Antistrophus
An undescribed in the Antistrophus, a group of that induce distinctive on Asteraceae plants. Members of this genus are typically , with each species associated with a single host species. The specific epithet reference to 'laciniatum' suggests association with Silphium laciniatum (compass plant), though this remains to be confirmed. The species has not been formally described in the scientific literature.
Pronunciation
How to pronounce Antistrophus: //ˌæn.tɪˈstrɒ.fəs ˌʌn.dɪˌskraɪbd ləˌsɪ.niˈætəm liːf ɡæl wɒsp//
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Identification
Distinguished from other Antistrophus by and association. Other described species in the include A. lygodesmiaepisum (on Lygodesmia juncea), A. silphii (on Silphium integrifolium), and A. meganae (on Silphium). Identification to species level requires examination of the gall structure, host plant, and morphology.
Habitat
Associated with prairie where the presumed Silphium laciniatum occurs, specifically tallgrass prairie remnants in the Midwestern United States.
Distribution
Midwestern United States; likely restricted to areas where the Silphium laciniatum occurs naturally, including Missouri, Iowa, and surrounding states with tallgrass prairie remnants.
Seasonality
and formation timing unknown for this undescribed ; related Antistrophus species typically show adult emergence in late spring to summer with gall development visible through growing season.
Host Associations
- Silphium laciniatum - presumed Association inferred from epithet; requires confirmation
Ecological Role
As a -inducer, manipulates tissue to form protective structures for larval development. May serve as host for , though specific parasitoid associations unknown.
Similar Taxa
- Antistrophus silphiiAlso associated with Silphium plants (S. integrifolium); distinguished by and host
- Antistrophus lygodesmiaepisumForms pea-like stem on Lygodesmia juncea; gall structure and differ
- Antistrophus meganaeAssociated with Silphium ; named from tallgrass prairie study area