Insects Nighttime

Variable Sallow

Sericaglaea signata

iNaturalist Wikipedia

A master of autumn camouflage, the Variable Sallow is one of the few moths you'll spot braving the chilly winter nights. Its stunningly diverse color patterns make it a favorite for backyard naturalists using night-vision cameras.

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Quick Identification

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Size

Wingspan of 33–42 mm (1.3–1.6 inches)

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Colors

Highly variable ranging from pale tan and grayish-brown to deep reddish-orange; usually features a dark-filled kidney-shaped spot on the forewing.

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Key Features

Distinct reniform (kidney-shaped) spot often dark-filled at the bottom
Smooth, satiny appearance to the forewings
Subtle, wavy transverse lines across the wings
Robust, 'furry' thorax typical of owlet moths

When You’ll See Them

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Activity pattern Active at night

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Peak hours 8 PM - 4 AM

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Season October-April

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Diet Adults feed primarily on tree sap, fermenting fruit, and occasionally nectar from late-blooming or early-spring flowers.

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Habitat Found in deciduous forests, woodland edges, and suburban backyards with mature hardwood trees.

Behavior

The Variable Sallow is a remarkably hardy member of the owlet moth family. Unlike many other insects that perish or remain dormant during the colder months, this species is known for its ability to remain active throughout the winter in the southern parts of its range. They are masters of crypsis, blending in perfectly with the dried leaves and autumnal debris found on the forest floor. During the day, they remain motionless in leaf litter, emerging only after the sun sets to seek out energy sources.

These moths are particularly interesting because they overwinter as adults. This means that on unseasonably warm nights in January or February, you might see them fluttering around your porch lights or feeding at sap flows. Their flight is strong and direct, though they spend a significant amount of time crawling on tree trunks or the ground to access food. While they are generally solitary, several individuals may congregate around a single high-quality food source, such as a bleeding tree or a patch of fermented fruit.

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Camera Tips

To capture the Variable Sallow on camera, you need to adjust your strategy for 'winter moth' season. Unlike summer moths that flock aggressively to bright white lights, sallows are often more motivated by food than light during the colder months. Set up a 'sugaring' station by painting a mixture of fermented fruit, brown sugar, and a splash of beer onto the trunk of a mature oak or maple tree. Position your camera on a tripod or mount it to a nearby branch about 4 to 5 feet off the ground, focusing specifically on the baited area of the bark.

Because these moths are active when temperatures are low, your camera's battery life will be challenged. If you are using a wireless trail camera, consider an external power pack or solar panel (if it gets enough daytime sun). Set your camera to a macro or close-up mode if available, as these moths are relatively small. A short trigger interval or a 10-second video mode is ideal for capturing them as they crawl across the bark to feed on the sugary bait. Infrared (IR) flashes are excellent for this species because they won't startle the insect, allowing for long observation periods without the moth flying away.

Placement is everything with the Variable Sallow. Look for areas in your yard with plenty of leaf litter, as this is where they hide during the day. If you are using a moth light trap with your camera, try using a UV (blacklight) bulb rather than a standard LED. The UV spectrum is much more attractive to Noctuidae. For the best results, monitor the weather forecast; the best nights for Variable Sallows are those 'thaw' nights where the temperature stays above 40°F (4°C) after dark, especially if there is a light drizzle or high humidity.

Similar Species

Species that look similar or are commonly confused with Variable Sallow.

Bicolored Sallow

Features a more distinct two-toned wing pattern with a sharper division between the light and dark areas.

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Frequently Asked Questions

Variable Sallow moths are strictly nocturnal. They typically begin their activity about an hour after sunset and remain active until the pre-dawn hours, provided temperatures remain above freezing.

The most effective way to attract them is through 'sugaring.' Create a thick paste of overripe bananas, molasses, and brown sugar, and apply it to tree trunks. They are also attracted to UV blacklights on warm winter nights.

As adults, they do not eat solid food. They drink liquid nutrients such as leaking tree sap, the juices from rotting fallen fruit, and occasionally nectar from early-season shrubs like pussy willow.

Yes, they are quite common in suburban areas that have mature deciduous trees (like oaks and maples) and where homeowners leave leaf litter on the ground for them to hide in during the day.

The Variable Sallow is best identified by its satiny wing texture and the dark shading in the lower half of its kidney-shaped 'reniform' spot. It is generally more robust and appears earlier (or later) in the season than many similar-looking summer moths.

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