Lopholeucaspis

Balachowsky, 1953

Species Guides

Lopholeucaspis japonica(Japanese maple scale)

Lopholeucaspis is a of armored scale insects (Diaspididae) containing that are pests of woody plants. The most documented species, L. japonica, has established across Asia, Europe, Australia, and North America. These infest a broad range of including citrus, pomegranate, crapemyrtle, privet, and euonymus. The genus is notable for its expanding global distribution and association with multiple species.

Pronunciation

How to pronounce Lopholeucaspis: /ˌloʊfoʊˈljuːkəspɪs/

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Identification

Members of this can be distinguished from other diaspidid by features of the female armor and pygidial , though specific diagnostic characters require microscopic examination. Lopholeucaspis japonica produces a circular to oval armor covering on plant stems and leaves. Accurate identification to level typically requires slide-mounted specimens and reference to taxonomic keys.

Habitat

Associated with woody plants including fruit trees (citrus, pomegranate), ornamental shrubs (crapemyrtle, privet, euonymus), and other woody ornamentals. occur on stems, leaves, and branches.

Distribution

Native to East Asia (Japan, China, Korea). Introduced and established in: Russia, Ukraine, Slovakia, India, Iran, Pakistan, Taiwan, Australia (Northern Territory), and United States (Connecticut, Maryland, Texas, Tennessee).

Diet

Phloem-feeding on plants; specific nutritional requirements not documented.

Host Associations

Lagerstroemia L. (crapemyrtle) - confirmed in Texas
Punica granatum (pomegranate) - new record from Gujarat, India
Ligustrum (privet) - confirmed in Tennessee
Euonymus - confirmed in Tennessee
Citrus spp. - primary in native range and other regions

Ecological Role

pest causing damage to woody plants through phloem feeding. Serves as for multiple including Marlattiella prima, Pteroptrix chinensis, and Aphytis hispanicus, which may contribute to .

Human Relevance

Economic pest of citrus and ornamental plants. Management challenges in nursery production due to persistence despite applications. Subject of research involving associated .

Similar Taxa

Other Diaspididae generaDistinguished by pygidial duct arrangement and armor characteristics; requires expert examination
UnaspisSimilar ; Lopholeucaspis differs in duct and patterns

More Details

Parasitoid associations

Three aphelinid have been documented: Marlattiella prima (first US record in Texas 2020, also in Tennessee), Pteroptrix chinensis, and Aphytis hispanicus (first Tennessee records). rates of 7.0-7.9% observed in nursery settings despite use.

Invasion history

L. japonica represents a well-documented case of a insect with rapid range expansion across multiple continents, with new records continuing to emerge.