Hyperaspis pleuralis
Casey, 1899
Side-spotted Sigil Lady Beetle
Hyperaspis pleuralis is a small to western North America, measuring 1.95–2.85 mm in length. Males are distinguished by coloration on the and anterolateral areas of the . The exhibits typical Hyperaspis biology: produce a waxy coating that them among while providing protection from and . Both larvae and are specialized predators of scale insects, making them valuable agents in natural and ornamental .
Pronunciation
How to pronounce Hyperaspis pleuralis: /haɪˈpɛr.əs.pɪs pluːˈræ.lɪs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other Hyperaspis by the specific pattern of male pronotal coloration and the single spot configuration on the . The small size (under 3 mm) and western North distribution help separate it from similar eastern species. can be distinguished from actual by their more rapid movement when disturbed—mealybugs remain sedentary while Hyperaspis larvae amble away quickly.
Images
Appearance
are small , 1.95–2.85 mm in length. The body is predominantly black. Males have markings on the and anterolateral areas of the . The are entirely black, or bear a single red or yellow spot. are covered in a dense waxy secretion produced by glands along the sides of the body, giving them a -like appearance.
Habitat
Associated with -infested trees and shrubs in arid and semi-arid regions. Found in supporting its , including crapemyrtle, magnolia, and other .
Distribution
Western North America: recorded from Arizona, California, Nevada, New Mexico, Texas, Oregon, and Utah.
Seasonality
active during warmer months. develop through summer and autumn, with adults seeking protected sites beneath bark or in leaf litter by early December. Adults return to plants in spring to oviposit.
Diet
Specialized of (). consume and stages; feed on all scale . Documented on crapemyrtle bark scale (Acanthococcus lagerstroemiae) and tuliptree scale (Toumeyella liriodendri).
Life Cycle
. laid near colonies hatch into waxy that develop through several , consuming thousands of scale individuals. occurs in autumn, with emerging to feed briefly before . No specific details documented for this .
Behavior
are active that chew holes in sacs to feed on contents. Both hunt among scale colonies. and larvae may consume several thousand during development. The waxy larval coating reduces risk from and other predators that tend scale colonies for .
Ecological Role
Important of in western North . agent that suppresses on and ornamental plants, reducing damage and secondary impacts from and stinging attracted to .
Human Relevance
for in urban and ornamental landscapes. Frequently misidentified as a pest () due to larval appearance, leading to unnecessary that harm potential. recommended by avoiding broad-spectrum on -infested plants.
Similar Taxa
- Hyperaspis spp.Other in share waxy and black-and-red or black-and- coloration; distinguished by specific spot patterns, size, and geographic range
- mealybugs (Pseudococcidae) are mimics—distinguished by behavioral response to disturbance (rapid movement vs. sedentary) and association with rather than sap feeding
- Cryptolaemus montrouzieriAnother waxy of and ; with different coloration (predominantly red with black spots)
Misconceptions
are commonly mistaken for pests due to their waxy covering, leading to destructive . The waxy coating is protective, not a sign of -feeding pest status.