Timandra amaturaria
Walker, 1866
Cross-lined Wave, Cross-lined Wave Moth, Cobra Inchworm
A small geometrid native to eastern North America, recognized by its distinctive wing shape and cross-lined pattern. are active from late spring through early autumn. The larva, known as the "cobra inchworm," exhibits a characteristic defensive posture.
Pronunciation
How to pronounce Timandra amaturaria: /tɪˈmændrə æˌmətʊˈrɛəriə/
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Identification
Hooked forewing apex and pointed hindwings separate this from most other small geometrids. The combination of cross-lined wing pattern and distinctive wing shape is diagnostic within its range.
Images
Appearance
Small with wingspan 20–28 mm. Forewings distinctly hooked at the apex; hindwings pointed. Wing pattern features fine transverse lines crossing both forewings and hindwings.
Distribution
Eastern and central United States: Massachusetts south to Florida, west to Texas, north to Wisconsin.
Seasonality
active May through September.
Diet
Larvae feed on Polygonum and Rumex .
Host Associations
- Polygonum - larval food plantsome
- Rumex - larval food plantsome
Behavior
Larva assumes a characteristic cobra-like defensive posture when disturbed, with body raised and thoracic legs extended forward.