Trirhabda bacharidis (Weber, 1801)

(Weber, 1801)

groundselbush beetle, groundsel bush leaf beetle

Trirhabda bacharidis is a skeletonizing leaf beetle in the Chrysomelidae. It is highly specialized to feed on Baccharis (Asteraceae), with both and larvae consuming plant foliage. The species has been documented in Australia, North America, and Southern Asia, and has been studied for its potential.

Trirhabda bacharidis P1010787a by 
xpda. Used under a CC BY-SA 4.0 license.Trirhabda bacharidis 130745034 by inbetweenbays. Used under a CC BY 4.0 license.Trirhabda bacharidis 210216922 by Adrienne van den Beemt. Used under a CC BY 4.0 license.

Pronunciation

How to pronounce Trirhabda bacharidis (Weber, 1801): /traɪˈræbdə bəˈkærɪdɪs/

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Distribution

Australia; North America; Southern Asia

Diet

and larvae feed on Baccharis (Asteraceae: Astereae); specificity testing indicates restricted feeding to Baccharis within the tribe Astereae

Host Associations

  • Baccharis - plantprimary ; both and larvae feed on foliage
  • Baccharis halimifolia - plantobserved in Florida

Human Relevance

Has been investigated as a potential agent for Baccharis

Similar Taxa

  • Trirhabda speciescongeneric may overlap in distribution and use; precise identification requires examination of morphological details
  • Other Chrysomelidaeskeletonizing leaf damage pattern is shared with many chrysomelid beetles; association with Baccharis helps distinguish

More Details

Taxonomic history

Originally described as Galeruca bacharidis by Weber in 1801; later transferred to Trirhabda

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Sources and further reading