Insects diurnal

Swarthy Skipper

Nastra lherminier

The understated ghost of the meadow, the Swarthy Skipper is a delight for those who appreciate the subtle details of nature. This tiny, olive-brown butterfly is a master of camouflage in the tall grass.

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Quick Identification

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Size

Wingspan of 22–30 mm (0.87–1.2 inches)

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Colors

Uniformly drab brownish-gray to olive-brown; usually lacks distinct spots, though some individuals show faint, pale marks on the forewings.

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Key Features

Plain, unmarked brownish-olive wings
Small, rounded wing shape typical of grass skippers
Short, stubby antennae with hooked clubs
Low, jerky flight pattern close to the ground

When You’ll See Them

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Activity pattern diurnal

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Peak hours 9:00 AM – 4:00 PM

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Season May through September

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Diet Adults primarily feed on nectar from low-growing flowers like white clover, peppermint, and shepherd’s needle. The larvae are specialists, feeding exclusively on various grasses, with a strong preference for Little Bluestem.

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Habitat Open grassy areas including meadows, old fields, forest edges, and suburban lawns that maintain native grass margins.

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Behavior

The Swarthy Skipper is a master of subtlety, often overlooked due to its small size and lack of flashy colors. It spends most of its life staying low to the ground, weaving through tall grasses and sedges. This 'skipping' flight is rapid and erratic, making it difficult to track with the naked eye until it settles on a perch.

Unlike many butterflies that bask with wide-open wings, the Swarthy Skipper frequently rests in the 'jet plane' position—a signature of the skipper family where the forewings are held at a 45-degree angle while the hindwings are spread flat. They are solitary creatures but are highly localized; if you see one, there is a good chance a colony is established nearby in a patch of native grass.

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Camera Tips

Capturing a Swarthy Skipper on a backyard or trail camera requires a specialized approach due to their small size and 'stealth' coloring. For the best results, use a camera with a macro lens or a dedicated close-focusing trigger. Since these butterflies rarely fly higher than two or three feet off the ground, mount your camera on a low tripod or a ground stake. Aim the lens at a patch of flowering nectar plants like White Clover or Wild Strawberry, as these are the primary 'hotspots' where the skipper will pause long enough for a clear shot.

Lighting is your best friend when filming this drab-colored insect. To reveal the subtle olive hues and soft textures of its wings, position your camera so the sun is behind it or to the side (side-lighting). This creates shadows that define the wing veins and body shape, preventing the insect from looking like a flat brown smudge. Avoid deep shade, as the Swarthy Skipper will simply vanish into the dark background. A high-shutter speed or high-frame-rate setting is essential to freeze their rapid wing beats during takeoff and landing.

To lure them into your camera’s frame, consider a 'pollinator station' strategy. Plant native grasses like Little Bluestem—the primary host plant for their caterpillars—near a cluster of nectar-rich flowers. If you are using an AI-powered camera, set the sensitivity to high and the capture zone to a tight 12-to-18-inch radius around a specific flower head. In mid-summer, look for them during the peak heat of the day when they are most active. If your camera allows for manual focus, pre-focus on the center of a flower to ensure the skipper's tiny body is crisp and sharp when it lands.

Similar Species

Species that look similar or are commonly confused with Swarthy Skipper.

Clouded Skipper

Larger than the Swarthy and features distinct white spots on the forewings.

Dun Skipper

Darker, chocolate-brown color without the olive-green tint often seen on the Swarthy.

Least Skipper

Noticeably smaller with bright orange-gold wing interiors, unlike the drab Swarthy.

Frequently Asked Questions

Swarthy Skippers are diurnal and are most active during the warmest parts of the day, typically between 9 AM and 4 PM, when the sun is brightest.

To attract them, plant native bunchgrasses like Little Bluestem for their larvae and keep a variety of low-growing nectar plants like clover and asters for the adults.

Adults drink nectar from small wildflowers. The caterpillars (larvae) eat the leaves of grasses, specifically Little Bluestem (Schizachyrium scoparium).

Yes, they are common in suburban areas that have open grassy spaces, though they are often missed because they blend in so well with shadows and dried grass.

The Swarthy Skipper is generally smaller and lacks the distinct translucent white spots found on the forewings of the Clouded Skipper.

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