Macaria lorquinaria (Lorquin’s Angle Moth)

Macaria lorquinaria (Lorquin’s Angle Moth)

Macaria lorquinaria is a medium sized, simply patterned Geometrid. Its forewing varies from yellowish brown to gray. The antemedial line is smoothly curved and a darker shade of the ground color with a pale medial border. The postmedial line is wavy and is also dark with a pale medial border. The forewings contain a small discal dash, and three subterminal spots, a pair of which are near the apex of the wing. 

Lorquin’s Angle Moths fly in the mesic forests of our region from April to October, with a peak in July/August which may indicate they are bivoltine (2 broods). Their larvae feed on the leaves of alder, birches and willows, although there are also reports of them dining on Grand Fir and Douglas Fir needles. This moth is named after Pierre Lorquin (1797-1873), a French entomologist who collected extensively in the PNW, amongst many other places.

Macaria lorquinaria (Lorquins Angle Moth)

Size- FW length 12-14mm

Habitat- Mesic forests 

Range- Region wide in appropriate habitat

Eats- Larva feed on leaves of alder, birch, and willows. 

Flight Season- April to October, peak July-August

2 thoughts on “Macaria lorquinaria (Lorquin’s Angle Moth)”

    1. It’s not that uncommon, especially in warmer climates. What’s always interesting about that is that the ones which enclose early in the year have to be able to hibernate through the winter, but the ones that eclipse later in the summer have to be able to just keep going till they pupate.

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