Hyperaspis dissoluta

Adults are distinguished from other Hyperaspis species by the specific pattern of yellow markings on black elytra. The two subspecies differ in size and spot configuration: ssp. dissoluta has a lateral vitta plus apical spot, while ssp. nevadica has a single elongate spot. Larvae are frequently misidentified as mealybugs due to their white waxy covering; they can be distinguished by their more active behavior when disturbed—larvae move quickly, whereas mealybugs remain sedentary.

Adults are small, oval beetles with shiny black elytra. The nominate subspecies H. d. dissoluta has a lateral vitta and apical spot on each elytron, while H. d. nevadica bears a single yellow elongate spot. Males have a yellow lateral border on the pronotum. The anterior pronotal border is black or yellow in ssp. dissoluta. Body length ranges from 2.0–2.75 mm (ssp. dissoluta) to 2.30–3.10 mm (ssp. nevadica). Larvae are covered in dense white wax secreted from lateral glands, giving them a mealybug-like appearance.

Associated with trees and shrubs infested with scale insects, particularly crapemyrtle and magnolia. Found in urban and suburban landscapes, parks, and natural areas where host plants occur.

Western North America: California, Arizona, Nevada, Idaho, Oregon, Washington, and Utah. Subspecies H. d. dissoluta occurs in California, Idaho, Oregon, and Washington; H. d. nevadica occurs in Nevada, Arizona, California, Idaho, Utah, and Washington.

Adults are active from spring through autumn. Larvae develop through summer, pupate in autumn, and adults emerge before winter. Adults overwinter in protected locations beneath bark or in leaf litter, returning to host plants in spring to reproduce.

Specialized predator of scale insects (Coccoidea). Larvae consume scale eggs and immature stages; adults feed on adult scales. Documented prey includes crapemyrtle bark scale (Acanthococcus lagerstroemiae) and tuliptree scale (Toumeyella liriodendri).

• Acanthococcus lagerstroemiae - preycrapemyrtle bark scale
• Toumeyella liriodendri - preytuliptree scale
• Lagerstroemia - habitatcrapemyrtle host plant
• Magnolia - habitatmagnolia host plant

Eggs are laid in spring on or near scale-infested plants. Larvae hatch and feed on scale insects, producing waxy secretions for protection. Larvae pass through four instars, consuming thousands of scale individuals during development. Pupation occurs on the host plant or in nearby protected locations. Adults emerge in late summer to autumn, feed briefly, then seek overwintering sites. Univoltine or partially bivoltine depending on climate.

Larvae are active predators that move among scale colonies. When disturbed, larvae amble away quickly—behavior that distinguishes them from sedentary mealybugs. The waxy larval coating appears to deter ant aggression, allowing larvae to forage in ant-tended scale colonies. Adults are also active hunters, searching bark and foliage for scale prey.

Important biological control agent of scale insect populations. Both larvae and adults contribute to suppression of pest scales in urban and natural ecosystems. The waxy larval coating represents an evolutionary adaptation to exploit ant-tended scale resources without triggering ant defensive behavior.

Beneficial insect for biological pest control. Frequently misidentified and killed due to larval resemblance to mealybugs. Conservation is encouraged in integrated pest management programs for crapemyrtle and other ornamental plants. No negative impacts documented.

• Hyperaspis spp.Other species in genus share black-and-spotted color pattern; distinguished by specific configuration of elytral markings and geographic range
• Mealybugs (Pseudococcidae)Larvae are mimics—distinguished by active movement when disturbed and presence on scale-infested plants rather than feeding directly on plant tissue
• Other CoccinellidaeMany lady beetles have spotted patterns; Hyperaspis distinguished by small size, specific spot arrangement, and association with scale insects

Larvae are commonly mistaken for mealybugs or other plant pests and killed with insecticides. This is a harmful misconception—proper identification reveals them as beneficial predators that should be conserved.

• lady beetle
• scale insect predator
• biological control
• western North America
• waxy larva
• beneficial insect
• Coccinellidae

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Waxy lady beetles come to the rescue of pest-plagued crapemyrtles, Hyperaspis spp. — Bug of the Week
• Waxy ladies: Hyperaspis ladybugs — Bug of the Week
• White, waxy ladies - Hyperaspis ladybugs — Bug of the Week
• Archive — Bug of the Week