Coniopteryginae

The powdery, waxy coating distinguishes Coniopteryginae from all other Neuroptera except the related Aleuropteryginae. Within Coniopterygidae, Coniopteryginae is separated from Aleuropteryginae by wing venation details (Coniopteryginae typically have fewer crossveins and a more simplified pattern), differences in male genitalia structure, and larval head capsule morphology. Adults may be mistaken for small moths (Lepidoptera) due to their dusty appearance and resting posture, but lack the scaled wings and wing-coupling mechanisms of moths. The reduced wing venation distinguishes them from other lacewing families such as Chrysopidae (green lacewings) and Hemerobiidae (brown lacewings).

Adults are minute to small insects, usually 3–5 mm in body length. The body and wings are covered with dense, white or grayish wax secretions that create a powdery, mealy, or dusty appearance—hence the common name "dusty lacewings." Wings are relatively broad with greatly reduced venation; crossveins are few or absent, and the venation pattern is simpler than in most other lacewing families. Antennae are long and filiform. The compound eyes are often large relative to head size. Larvae are elongate, somewhat flattened, and also produce waxy secretions; they have short, curved mouthparts adapted for piercing prey.

Found in diverse terrestrial habitats including forests, woodlands, scrublands, and occasionally agricultural areas. Adults and larvae occupy vegetation surfaces, particularly on leaves and bark where prey is abundant. They show preference for habitats with established populations of their prey—primarily arboricolous or shrub-dwelling mites and small insects. Some species are associated with coniferous foliage, others with broadleaf trees and shrubs.

Widespread across temperate and tropical regions of all continents except Antarctica. Well-represented in the Nearctic, Palearctic, Neotropical, Afrotropical, Oriental, and Australasian regions. Individual species ranges vary from restricted endemism to broad transcontinental distributions.

Adult activity patterns vary by species and latitude. In temperate regions, most species are active from late spring through summer, with some extending into autumn. In tropical and subtropical regions, adults may be present year-round with population peaks during favorable seasons. Larvae are generally present whenever prey populations are adequate.

Predatory on small soft-bodied arthropods. Adults and larvae feed primarily on mites (Acari), including spider mites and other plant-dwelling species, as well as scale insects, mealybugs, and other small Homoptera. Some species have been recorded feeding on aphids, thrips, and other minute insects. Prey is pierced with hollow mandibles and digestive enzymes are injected; liquefied tissues are then consumed.

Complete metamorphosis with egg, larva, pupa, and adult stages. Eggs are laid singly or in small groups on vegetation, often near prey colonies. Larvae are active predators, passing through three instars. Mature larvae spin small, inconspicuous silken cocoons on leaves, bark crevices, or other sheltered locations for pupation. Developmental duration varies with temperature and prey availability; multiple generations per year are common in favorable climates.

Adults are generally slow-moving and cryptic, often resting motionless on vegetation with wings held roof-like over the body. When disturbed, they may flutter weakly for short distances. Both larvae and adults produce waxy secretions from specialized glands; these secretions may serve protective functions against predators and desiccation. Larvae are active hunters that move slowly across plant surfaces searching for prey. Nocturnal or crepuscular activity has been reported for some species.

Significant predators of phytophagous mites and other small plant pests, contributing to natural biological control in various ecosystems. Their role as specialized predators of mites distinguishes them from many other lacewing groups that target different prey. Population densities can increase in response to mite outbreaks, potentially providing pest suppression services in forests, orchards, and ornamental plantings.

Recognized as potentially beneficial insects for biological control of mite pests in agriculture and horticulture, though less studied and utilized than chrysopids. Some species have been investigated for their potential in integrated pest management programs targeting spider mites in orchards and greenhouse crops. Their small size and cryptic habits mean they are rarely noticed by the general public.

• AleuropteryginaeThe other subfamily of Coniopterygidae; distinguished by differences in wing venation, male genitalia, and larval head capsule structure
• Chrysopidae (green lacewings)Larger lacewings with more complex wing venation, green bodies, and lack of powdery wax coating; larvae are alligator-like with prominent sickle-shaped jaws
• Hemerobiidae (brown lacewings)Similar size range but lack waxy coating, have more extensive wing venation with many crossveins, and typically brownish coloration without dusty appearance
• Small moths (Lepidoptera: various families)Superficially similar resting appearance due to powdery look, but moths have scaled wings (visible under magnification), different antennae structure, and wing-coupling mechanisms absent in lacewings

• predator
• mite predator
• biological control
• cryptic
• wax-producing

• BugGuide
• iNaturalist taxon
• NCBI Taxonomy