Oregon Caves National Monument Butterfly Guide 🦋

Wingspan: 1 - 1 1/4 inches (2.5 - 3.2 cm)
Host Plants: Grasses including purple reedgrass (Calamagrostis purpurascens)
Overwintering stage: fully-grown caterpillars
Mate-Location system: perching
Flight: May-July

Conservation: Not usually required
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery less ↑

Wingspan: 1 3/8 - 1 3/4 inches (3.5 - 4.5 cm)
Plant Hosts: Coast live oak (Quercus agrifolia), Garry oak (Q. garryana),
Overwintering stage: fully-grown caterpillars
Mate-Location system: perching
Flight: March-July

Conservation: Not usually required
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery less ↑

Wingspan: 1 1/4 - 1 5/8 inches (3.2 - 4.2 cm)
Host Plants: Needlegrass (Stipa spp.), foxtail brome (Bromus rubens), bluegrass (Poa pratensis)
Overwintering stage: caterpillars
Mate-Location system: perching
Flight: May-June; August-September

Conservation: Not usually required
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery less ↑

Wingspan: 1 - 1 1/2 inches (2.5 - 3.8 cm)
Host Plants: Various grasses including blue grama (Bouteloua gracilis), fluff grass (Erioneuron pulchellum), and buffalograss (Buchloe dactyloides)
Overwintering stage: caterpillars
Mate-Location system: perching
Flight: Two broods from April-October

Conservation: Not usually required
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery less ↑

Wingspan: 1 - 1 1/4 inches (2.5 - 3.2 cm)
Host Plants: canary grass (Phalaris spp.), wild rye (Elymus spp.), wheatgrass (Agropyron spp.)
Overwintering stage: first-stage caterpillars
Mate-Location system: perching
Flight: late July-October

Conservation: Not usually required
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery less ↑

aka European Skipper

Color: Wings are brassy burnt orange; upperside of both wings with black borders and black on the outer portions of the veins. The male forewing has a narrow black stigma. A pale form (pallida) is very rare.
Wingspan: 1 - 1 1/8 inches (2.5 - 2.9 cm)
Host plants: Timothy (Phleum pratense) and other grasses.
Adult food: Nectar from low-growing flowers including orange hawkweed, thistles, ox-eye daisy, fleabane, white clover, red clover, selfheal, Deptford pink, common milkweed, and swamp milkweed.
Overwintering stage: eggs
Mate-Location system: patrolling
Flight: mid-May to mid-July

https://www.butterfliesandmoths.org/species/Thymelicus-lineola less ↑