Oregon Caves National Monument Butterfly Guide 🦋
This ID guide can be used to help you or others ID butterflies that are found in Oregon Caves National Monument in Oregon state (U.S.)
Gray Marble
Wingspan: 1 1/2 - 2 inches (3.8 - 5 cm)
Host plants: Rock cress (Arabis species); mustard family (Brassicaceae)
Overwintering stage: Chrysalid
Mate-Location system: Patrolling
Flight: March-June
Conservation: not usually required
NCGR: G3 - Very rare or local throughout its range or found locally in a restricted range (21 to 100 occurrences)
Large Marble
Wingspan: 1 1/2 - 2 inches (3.8 - 5.1 cm)
Host Plants: common tansy (Tanacetum vulgare), rockcresses (Arabis spp.), marsh yellowcress (Rorippa palustris), common tansy mustard (Descurainia sophia)
Overwintering stage: Chrysalis
Mate-Location system: Patrolling
Flight: May-July
Conservation: The Island Marble (Euchloe ausonides insulanus) is critically imperiled. It was ...more ↓
