Aspilanta hydrangaeella

Aspilanta hydrangaeella is a species of moth in the family Heliozelidae. It is found in the United States. The larvae are leaf miners that feed on hydrangea plants.

Distribution
A. hydrangaeella can be found in the eastern United States, including Georgia, Illinois, Kentucky, Maryland, North Carolina, Ohio, and Tennessee.

Description
Adult A. hydrangaeella have a wingspan of 5.0–5.8 mm, with each forewing measuring 2.2–2.8 mm in length. Externally, adult A. hydrangaeella are similar to other moths in the genus Aspilanta, but can be differentiated by their antennae – the antennae of A. hydrangaeella have noticeable white tips.

The larvae are colorless or whitish besides their green gut contents, with a dark brown head and prothorax. Darker spots may be visible on some body segments. Their primary host plant is smooth hydrangea (Hydrangea arborescens), though larvae can also be found less frequently on snowy hydrangea (Hydrangea radiata).

The leaf mine begins with a long, sometimes contorted linear portion that eventually widens out into an elongate blotch or wide gallery. The frass ranges from green to black in color, and is distributed in a narrow line at the start of the mine but forms a central smear in the larger, later portion of the mine. When mature and ready to pupate, the larvae cut out a 3.5–4.5 mm long case from their host leaf, leaving an elliptic hole.