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Some small fruit fly species (Tephritidae) may depend on the larvae of this moth, which, in turn, depend on northern gama grass (Tripsacum dactyloides) (Bird 1913; Kunstler 1991).
State Ranking Justification
Currently, only one population is known to exist in New York City (in Pelham Bay Park). Historically, one other population was documented nearby in Rye, New York, but this population no longer exists (Forbes 1954; E. Quinter, personal communication, cited in City of New York 1987; Schneider 1999).
The short-term trend for this moth in New York State is unknown. The only population known to exist in recent decades was confirmed to still exist in 1999.
The long-term trend for this moth in New York State is likely declining. Historically, the moth was documented from two sites in the vicinity of New York City. In recent decades, the moth was confirmed to still exist at one of the sites. However, the moth no longer exists at the second site (Forbes 1954; E. Quinter, personal communication, cited in City of New York 1987; Schneider 1999). Over the past few centuries, the area in and around New York City has experienced heavy development pressure, resulting in loss and fragmentation of habitat for this moth.