T-Marking Moth / Giant plume moth species

Scientific Name: Emmelina monodactyla (representative example)

Order & Family: Order: Lepidoptera, Family: Pterophoridae

Size: Wingspan typically 18–27 mm

T-Marking Moth / Giant plume moth species

Natural Habitat

Gardens, meadows, and semi-wooded areas; often found indoors resting on walls near light sources.

Diet & Feeding

Larvae feed on various plants, notably bindweed (Convolvulus) and morning glory; adults feed on nectar.

Behavior Patterns

Distinctive T-shaped resting posture with narrow, rolled-up wings held at right angles to the body. They are primarily nocturnal and highly attracted to artificial lights.

Risks & Benefits

Harmless to humans; no sting or bite. Can be considered a minor garden pest if larvae are numerous, but generally provides ecological benefit as part of the food chain and incidental pollination.

Identified on: 2/17/2026