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Contact information
For information on Wisconsin's rare vertebrate animals, contact:
Rich Staffen
Conservation Biologist
For information on Wisconsin's rare invertebrates, contact:
Jay Watson
Conservation Biologist

Marbleseed Leafminer (Acrocercops pnosmodiella)

Need a main photo for this animal


There is no overview information available for that species.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for Marbleseed Leafminer (Acrocercops pnosmodiella). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.

Acrocercops pnosmodiella is not tracked by the Wisconsin Natural Heritage Inventory Program at this time (this species is not on the NHI Working List).
Summary Information
State Statusnone
Federal Status in Wisconsinnone
State RankSU
Global RankGNR
Tracked by NHIW

Species guidance

Identification: This is a tiny moth of the family Gracillariidae. These moths are typically less than one half inch in length and several genera have pale wings with silver spots, and are found on their food plant.

Habitat: Marble-seed is limited in the state to the region of limestone where it occurs on calcareous hill prairies, dry, rocky slopes, prairie pastures, sandy soils along rivers and rich dry-mesic prairies.

Host Plant: Onosmodium bejariense (Syn. O.molle) is a rare plant in prairies.

State Distribution: Grant County.

Rationale for Species Listing and Threats: Loss of prairie habitat, destruction of roadside plant populations, poor management of prairies.

Phenology: Larvae have been collected July 31, August 3-5, and August 26.

Life and Natural History: Larvae mine tiny holes in the leaves of the foodplant. The larvae hollows out the center of the leaf tissue and pupates in the ballooned area lined with silk.

Survey Guidelines: This moth may be best identified by collection of larvae from the plants in late summer and rearing out the adults.

Inventory, Monitoring and Research Needs: The moth has not been identified from the Onosmodium populations in the eastern part of the state.


No additional photos are available for Marbleseed Leafminer at this time. Please consider donating a photo to the Natural Heritage Conservation program.

Last revised: Thursday, October 08, 2020