Geometrid Moths of Alameda County
A field guide to geometrid moths found in Alameda county.
Hydriomena nubilofasciata
Adult: FW extremely variable in color and pattern; "typical" specimens have four gray bands alternating with four light gold or greenish bands; PM line forms a smooth concave arc for most of its length, then angles inward near costa (a distinguishing feature); some individuals have a pale median area and dark patches in AM and subterminal areas, others have the reverse pattern - dark median ...more ↓
Ceratodalia gueneata
Ceratodalia is a genus of moth in the family Geometridae, containing only one species, Ceratodalia gueneata, which is found in western North America, ranging from British Columbia and Alberta to Colorado and California.
Western White-Ribboned Carpet
Forewing with broad white medial band and broad black curving postmedial band; prominent black discal spot; basal area black.
Wingspan 23-27 mm
Digrammia excurvata
United States
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Type of Residency: Year-round
Omnivorous Looper
The Omnivorous Looper (Sabulodes aegrotata) is a moth of the Geometridae family. It is found in north-western North America, south to northern California.
Dysstroma citrata
The Dark Marbled Carpet or Northern Marbled Carpet (Dysstroma citrata) is a moth of the Geometridae family. It is found across the Holarctic ecozone. It has also been reported from India.
Double-banded Carpet Moth
Forewing gray with white AM and PM bands, and up to 10 scalloped dark gray lines variably shaded with black; discal spot large, black
hindwing dirty white shaded with gray, usually with slight pink tint; terminal line black; finge white
Wingspan 19-27 mm
Perizoma custodiata
Canada
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Type of Residency: Year-round
Xanthorhoe defensaria
Wingspan 2.5 cm. Forewing is gray to yellow with a wavy black median band. This geometrid is very common and widely distributed in western North America. Moths fly in spring and again in fall. Caterpillars feed on the foliage of herbaceous plants.
