Noctuidae - Agaristinae




Gerra radicalis Walker

Gerra radicalis Walker, [1865] 1864, List of the Specimens of Lepidopterous Insects in the Collection of the British Museum, 31:141.

Diamuna adrasta Druce, 1889, Biologia Centrali-Americana. Insecta. Lepidoptera-Heterocera, 1:334, pl. 30, fig. 20.

Diagnosis: The overall coloration of the forewing is medium brown. The forewing is triangular in shape and is broader and more triangular in shape than its close relative Gerra sevorsa. The postmedial line is reddish brown and is evenly curved except for a few slight teeth, particular toward the costa. The postmedial line is followed by a significantly lighter subterminal region. The costa is slightly dusted with light blue scales. The hindwing has a brown outer margin and a yellow to orange basal region.

Distribution: Gerra radicalis is primarily a Mexican species extending from southern Mexico northward into south-eastern Arizona and southwestern New Mexico.

Identification Quality: Excellent

Larva: Unknown

Foodplants: Unknown

Gerra radicalis

Gerra radicalis has a broader and more triangular forewing than its relative Gerra sevorsa. The forewing color of sevorsa is a darker brown without the reddish tints of radicalis. The forewing of sevorsa usually has a whitish patch between the reniform and the postmedial line.

Similar Species

Gerra sevorsa