Sericaglaea signata

(French, 1879)

Variable Sallow, Variable Sallow Moth

Sericaglaea signata, commonly known as the Variable Sallow , is a found in eastern and central North America. are active from October through May, with a single per year and adults. The species has a wingspan of 35–43 mm. feed on the leaves of oak (Quercus), cherry/plum (Prunus), and basswood/linden (Tilia) species.

CATALOGUE-BM-PLATE CVI by Sir GEORGE F. HAMPSON, Bart.. Used under a Public domain license.

Sericaglaea signata3 by J.Gill, Canadian National Collection of Insects, Arachnids and Nematodes. Used under a CC BY-SA 3.0 license.

Sericaglaea signata P1130992b by
xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Sericaglaea signata: /ˌsɛrɪkəˈɡliːə sɪɡˈneɪtə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

The Variable Sallow can be distinguished from similar by its autumn-to-spring period (unusual for most moths), its specific associations with Quercus, Prunus, and Tilia, and its geographic range in the eastern United States. The name 'signata' refers to the variable but distinctive markings. may be confused with other Xylenini tribe members, but the combination of flight season and pattern helps separate it from .

Images

Appearance

have a wingspan of 35–43 mm. The exhibits variable coloration typical of sallow , with that are generally dull brownish to grayish with subtle patterning. The are typically paler. The overall appearance is cryptic, aiding in against tree bark during daytime roosting.

Habitat

Deciduous and mixed forests, woodlands, and suburban areas with tree present. Associated with oak-hickory forests and areas containing basswood or cherry trees.

Distribution

Eastern and central North America: from Connecticut south to Florida, and west to Missouri and Texas.

Seasonality

are active from October through May, with peak activity varying by latitude. The has one per year (). Adults overwinter, making this one of the few species regularly active during winter months in temperate regions.

Diet

feed on the leaves of Quercus (oak), Prunus (cherry, plum), and Tilia (basswood, linden) . Specific feeding habits of are not documented in available sources.

Host Associations

Quercus - larval oak
Prunus - larval cherry and plum
Tilia - larval basswood and linden

Life Cycle

(one per year). are laid in late autumn or early winter. develop through the growing season, feeding on leaves. occurs in soil or leaf litter. emerge in autumn and are active through winter, with the ability to withstand freezing temperatures. This winter-active strategy is unusual among .

Behavior

are and attracted to light. They are among the few regularly encountered during winter months, suggesting physiological for cold-weather activity. Adults seek shelter in bark crevices or similar protected locations during daylight hours.

Ecological Role

function as folivores (leaf-feeders) on hardwood trees, contributing to and serving as for and . may serve as winter food sources for birds and other when few other are active.

Human Relevance

Minor significance. Not considered an agricultural or forestry pest due to its scattered distribution and preference for wild plants. Occasionally encountered by naturalists and enthusiasts due to its unusual winter period. May be observed at porch lights during winter months.

Similar Taxa

Other Xylenini mothsSimilar general appearance, but distinguished by season (most Xylenini are spring-flying) and specific pattern details
Eupsilia spp.Other winter-active with similar preferences; distinguished by shape and pattern details

More Details

Taxonomic history

Originally described as Orhtosia signata by French in 1879, later transferred to the Sericaglaea. The genus name combines 'serica' () and 'aglaea' (brightness/beauty), possibly referring to the sheen of the .

Physiological note

The ability of to remain active through winter months suggests cryoprotectant mechanisms or freeze , though specific physiological studies have not been documented in the provided sources.