This site has been created by
Bill Oehlke at firstname.lastname@example.org
Comments, suggestions and/or additional information are welcomed by Bill.
Catocala grynea, the Woody Underwing (wingspan: 40-50mm), flies in Ontario and Quebec (rare) through Maine and Connecticut, south to Florida, west to Texas and north through Iowa to Wisconsin and Minnesota.
The forewing is a dull greenish grey with orangey-brown shading along the inner margin. The antemedial, median and postmedial lines are quite faint.
Image courtesy of Lynn Scott, Ontario.
Praeclara is somewhat similar but has a break in the brown shading between the am and pm lines. Praeclara also has a paler orange hindwing color.
FLIGHT TIMES AND PREFERRED FOOD PLANTS:
Catocala grynea are on the wing from May (Texas) to September. Peak flight is probably in July.
The Catocala grynea caterpillar reportedly feeds on hawthorns, plums and apples. Gabe Larrabee reports success only with apple.
Always ready for a quick getaway, this grynea flashes its hindwings revealing checkered fringe considerably lighter than orange banding.
Catocala grynea courtesy of Lynn Scott.
SCENTING AND MATING:
Catocala grynea females emit an airbourne pheromone and males use their antennae to track the scent plume.
Tim Dyson has captured the ventral surface as this specimen, July 21, 2005, Peterborough, Ontario, is enjoying the bait along Tim's trail.
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