Noctuidae - Agaristinae - Gerrodes




Gerrodes Hampson 1908

Gerrodes Hampson, 1908, Catalogue of the Lepidoptera Phalaenae in the Collection of the British Museum, 7:7.
Type species: Diamuna longipes Druce by subsequent designation by Hampson, 1910, Catalogue of the Lepidoptera Phalaenae in the Collection of the British Museum, 9:418.

Gerrodes contains two species, minataea and Gerrodes longipes (Druce). Only minataea occurs in the United States.

The primary features of the genus Gerrodes are:

1. The most unusual structure in this genus is the presence of large teeth on the anal tube of the female genitalia. The tube does not normally evert, but the teeth can be seen as a dark discoloration of the anal tube between the ovipositor lobes.

2. The hood of the external tympanum is well developed and the postnotal plate portion containing the pockets of the internal tympanum does not overhang the external tympanic membrane as it does in Psychomorpha, Alypia, or Eupseudomorpha, for example.

3. Male and female antennae simple.

4.Frontal process present, an elongate projection with a circular, flat apex with an outer rim,

5. Juxta of male genitalia with a cephalad base with two lateral, projecting arms armed with denticules on their caudal halfs.

6. Female corpus bursae complicated, divided into cephalad and caudal halves; caudal half a complex, convoluted double sack with an outer membranous part and an internal, convoluted sclerotized portion covered with small denticules; cephalad half of corpus bursae a simple, highly membranous, globular sack.

The only recorded foodplant for Gerrodes minataea is Vitis sp.

Included Species

Gerrodes minataea