Taxonomy
Superfamily: Noctuoidea
Family: Noctuidae Subfamily: NoctuinaeTribe: ApameiniP3 Number: 932363
MONA Number: 9385.10
Other Common Name: Double Lobed Borer
Comments: There is but a single species in this isolated genus of Apameine moths. Originally from Europe to Japan, it was introduced at least twice into the United States (Troubridge et al, 1992), has spread across Canada, and is progressing southward down the Appalachians.
Species Status: North Carolina specimens have been barcoded and match those from elsewhere in the US, Canada and Europe.
Identification
Field Guide Descriptions: Beadle and Leckie (2012) Online Resources: MPG , BugGuide , iNaturalist , Google , BAMONA , GBIF , BOLD Technical Description, Adults: Mikkola et al. (2009)Technical Description, Immature Stages: Wagner et al. (2001)
Adult Markings: A medium-sized, black and brown marked Noctuid. The forewing has a dark brown to blackish patch extending along the costa down to the fold in the central part of the wing; the terminal area may also be dark, sometimes with dark wedges extending towards the subterminal line. The basal and subterminal areas, as well as the medial area below the fold is a lighter tan to gray-brown, as is the filling of the fairly large reniform spot. Adults are fairly distinct but are sometimes confused with one of the forms of Mesapamea fractilinea. Sexes are similar.
Forewing Length: 13-15 mm (Mikkola et al., 2009)
Adult Structural Features: The genitalia are quite distinct and do not indicate close relationship to other Apameine genera.
Structural photos
Male reproductive structures
Aedeagus
Female reproductive structures
Male abdominal pelt
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: The caterpillar bores the stems of Glyceria, Phragmites and Phalaris species of grasses. As typical of borers, it is devoid of most color and appears to overwinter as an egg or young larva (see Wagner et al., 2001, for illustrations and a more detailed description).
Larvae ID Requirements: Identifiable only through rearing to adulthood.