Noctuidae - Agaristinae



Gerra sevorsa (Grote)

Fenaria sevorsa Grote, 1882, Papilio, 2:132.

Diamuna aedessa Druce, 1889, Biologia Centrali-Americana. Insecta, 1:334, pl. 30, figs. 21,22.

Diamuna aelia Druce, 1889, Biologia Centrali-Americana. Insecta. Lepidoptera-Heterocera, 1:334, pl. 30, figs. 23,24.  NEW SYNONYMY

Gerra brephos Draudt, 1919, in Seitz, Gross-Schmetterlinge der Erde, 7:11, pl. 1, row h.  NEW SYNONYMY

Gerra sevorsa form meridionalis Draudt, 1919, in Seitz, Gross-Schmetterlinge der Erde, 7:11.

Diagnosis: Gerra sevorsa has an elongate, rounded forewing in contrast to the broad, triangular wing of Gerra radicalis. Forewing color and maculation are variable. However the overall coloration is typically dark brown. The reniform is usually followed by a whitish patch and the costal part of the postmedial line is usually accented with three dark red-brown triangles. The hindwing has a dark brown to nearly black outer margin and a yellow to yellow-orange base.

Distribution: Gerra sevorsa has a wide distribution ranging from New Mexico and Arizona southward throughout Mexico and Central America as far south as Panama.

Identification Quality: Excellent

Larva: Unknown

Foodplants: Parthenocissus and Vitis arizonica (Vitaceae)


Gerra sevorsa

Gerra sevorsa has a rounder and more elongate forewing than the broader, triangular forewing of Gerra radicalis. Gerra sevorsa usually has a whitish patch between the reniform and the postmedial line. This patch is missing in radicalis. The overall coloration of sevorsa is darker than that of radicalis.

Similar Species

Gerra radicalis