Libellula luctuosa

Family: Libellulidae

Widow Skimmer (Libellula luctuosa) is a medium-sized, broad-winged skimmer recognized by the large dark patches covering the basal portions of all four wings. Mature males add conspicuous white bands beyond the dark patches and develop blue-gray to whitish pruinosity over the thorax and abdomen. Females and immature males lack the broad white wing bands and retain a yellow-and-black abdominal pattern; females also commonly show dark wing tips. Widow Skimmers occur around ponds, lakes, marshes, and slow streams, but adults are often encountered away from water along field edges, roadsides, and other open vegetation.

For representative images and visual context, see the page: Widow Skimmer in the Gallery section.

Description

Libellula luctuosa is generally recognized by:

Overall form: medium-sized, stout-bodied skimmer with unusually broad-looking wings
Size: approximately 43–51 mm, or about 1.7–2.0 inches long
Wing pattern: large dark brown to black patches occupy roughly the basal third to half of all four wings
Mature male wings: broad white-pruinose bands appear just beyond the dark basal patches, producing a bold black-and-white pattern
Female and immature wings: dark basal patches remain prominent, but the white bands are absent or only beginning to develop in immature males; females often show darkened wing tips
Mature male body: dark brown to black beneath blue-gray or whitish pruinosity, especially across the thorax and abdomen
Female and immature body: brown to black with a dark dorsal abdominal stripe bordered by yellow stripes
Thorax: mature males become frosted with pruinosity; females and immature males remain brown with tan or yellow markings
Eyes and face: generally brown to reddish-brown, with the large compound eyes meeting along the top of the head
Legs: dark to black
Sex differences: mature males are boldly black, white, and blue-gray; females and immature males are more strongly patterned in brown, yellow, and black

The wing pattern is the most dependable field mark. Even when body color is partly hidden by vegetation or affected by age, the broad dark basal patches remain conspicuous.

Habitat and Behavior

Typical habitats include:

ponds, lakes, marshes, and slow-moving streams
muddy-bottomed or vegetated waters with open shoreline perches
wet meadows, prairie edges, fields, roadsides, and shrubby vegetation away from water

Behavioral notes:

Perching: commonly rests on grass blades, stems, twigs, shrubs, and other exposed vegetation
Flight: makes strong, direct flights and often patrols low over open water
Territorial behavior: males defend shoreline or open-water territories from other dragonflies
Away from water: both sexes may be found well away from breeding habitat while feeding or resting
Hunting: adults capture small flying insects in the air
Oviposition: females release or flick eggs toward open water, often tapping the abdomen at the surface
Seasonality: primarily a summer species in Minnesota and the Upper Midwest, most often encountered from June through August, with a broader May-to-October season farther south or during favorable years

Widow Skimmers may return repeatedly to the same perch or small group of perches. Watching that pattern can provide opportunities for side, dorsal, and frontal photographs without following the insect through dense vegetation.

Identification

Key features for field diagnosis:

Size and build: medium-sized, stout skimmer with wings that appear broad for the body
Basal wing patches: extensive dark patches across all four wing bases; this is the primary identifying feature
Mature male wing bands: white bands immediately beyond the dark basal patches
Female wing tips: darkened outer wing tips are common, with no broad white wing bands
Abdominal pattern: females and immature males show a central dark stripe bordered by yellow markings
Male pruinosity: mature males become blue-gray to whitish across the thorax and abdomen
Perching posture: wings held fully open while resting
Habitat clue: frequently found near still or slow water, but also common in fields and along roadsides

A mature male is usually unmistakable when the black-and-white wing pattern is visible. Females and immature males require closer attention because they lack the mature male’s white bands. In those individuals, look for the combination of broad dark basal wing patches, dark wing tips, yellow-striped abdomen, and large skimmer build.

For photographic identification, try to capture:

dorsal view showing all four wing patches
side view showing thorax and abdominal coloration
clear view of the wing tips
abdomen pattern in females or immature males
amount and placement of pruinosity in developing males
terminal abdomen when sex remains uncertain

Similar Species

Use this section to distinguish Libellula luctuosa from likely lookalikes in Minnesota and the Upper Midwest.

Twelve-spotted Skimmer (Libellula pulchella): Mature males also have black-and-white wings, but the dark marks are arranged as separate spots at the wing bases, nodus, and tips rather than forming the Widow Skimmer’s broad continuous basal patches. Females and immature males show twelve distinct dark wing spots and lack the large dark basal blocks.
Common Whitetail (Plathemis lydia): Mature males have a broad white abdomen and dark wing bands, but the abdomen is much wider and flatter. Females have three dark spots on each wing and a yellow-patterned abdomen rather than the Widow Skimmer’s extensive basal wing patches.
Slaty Skimmer (Libellula incesta): Mature males may appear dark blue or slate-colored, but their wings are mostly clear and lack the Widow Skimmer’s bold black-and-white pattern. Females and immatures are brown but also lack the broad dark wing bases.
Black Saddlebags (Tramea lacerata): The dark markings are concentrated as saddle-shaped patches on the hindwings, while the forewings remain mostly clear. Black Saddlebags also has a longer, slimmer abdomen and a more continuously cruising flight style.
Blue Dasher (Pachydiplax longipennis): Mature males are blue-pruinose, but they are much smaller and have mostly clear wings with only limited amber or brown at the bases. Female and immature Blue Dashers are also smaller and lack the Widow Skimmer’s broad dark wing patches.

Ecology and Notes

Widow Skimmer is widespread across much of the United States and southern Canada and is common in suitable habitat in the Upper Midwest. It is associated mainly with open, sunlit water, especially ponds, lakes, marshes, and slow streams with muddy margins and abundant vegetation.

Males often establish territories near water, while females and nonterritorial individuals may spend more time feeding in nearby fields or along roadsides. Their conspicuous wing pattern remains visible in flight and can make the species recognizable even before it lands.

Useful field notes:

The dark basal wing patches are present in both sexes and at all adult ages.
Mature males develop white wing bands and increasing blue-gray or whitish pruinosity.
Immature males can closely resemble females before the white wing bands and body pruinosity become obvious.
Females generally retain the yellow-striped abdomen and dark wing tips.
Older individuals may become darker or more heavily pruinose, obscuring some underlying body markings.
The broad wings can make the dragonfly appear larger and heavier than its body length suggests.
The scientific name luctuosa means mournful or sorrowful, a reference commonly associated with the dark, mourning-like wing patches.

Identification from photographs is usually reliable when the wing pattern is visible. Dorsal photographs are especially useful because they show the full shape and extent of all four dark basal patches, while side views help distinguish mature males from females and immature males.

References

Odonata Central https://www.odonatacentral.org/
iNaturalist taxon page https://www.inaturalist.org/taxa/47934-Libellula-luctuosa
BugGuide: Species Libellula luctuosa - Widow Skimmer https://bugguide.net/node/view/586
Minnesota Dragonfly: Widow Skimmer https://mndragonfly.info/html/skimmers/widow.html
MinnesotaSeasons: widow skimmer https://minnesotaseasons.com/Insects/widow_skimmer.html
Wisconsin Odonata Survey: Libellula luctuosa https://wiatri.net/inventory/odonata/SpeciesAccounts/SpeciesDetail.cfm?TaxaID=141
Illinois Department of Natural Resources: widow skimmer https://dnr.illinois.gov/education/wildaboutpages/wildaboutinvertebrates/wildaboutdragonflies/family-libellulidae/wadfwidowskimmer.html
Paulson, Dennis. Dragonflies and Damselflies of the East Princeton University Press.