Cyphostethus tristriatus
(Fabricius, 1787)
Juniper Shield Bug
Cyphostethus tristriatus, commonly known as the juniper , is a large shield bug in the . to the Palearctic region, it has been and established in North America. The exhibits intraspecific melanism, with a highly melanic documented in addition to the typical green coloration. It is associated with juniper as a .



Pronunciation
How to pronounce Cyphostethus tristriatus: /sɪˌfɒsˈtɛθəs trɪˌstraɪˈeɪtəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other by the combination of large size (9–10.5 mm), bright green coloration with pinkish-red corial markings, and association with juniper. The melanic lacks typical green and red coloration, appearing uniformly dark.
Images
Appearance
Large measuring 9–10.5 mm. Typically bright green with distinctive pinkish-red markings on the . A highly melanic has been documented, appearing mostly or completely dark in pigmentation.
Habitat
Associated with juniper vegetation. Specific microhabitat requirements are not well documented.
Distribution
to Palearctic region (Europe, Northern Asia, Southern Asia, Africa). and established in North America.
Diet
; feeds on juniper (Juniperus spp.). Specific feeding habits beyond association are not documented.
Host Associations
- Juniperus - 'juniper ' indicates association; specific not confirmed in available sources
Human Relevance
in North America; potential minor pest of ornamental juniper. No significant economic or medical importance documented.
Similar Taxa
- Other AcanthosomatidaeSimilar ; distinguished by color pattern and juniper association
More Details
Melanism
A highly melanic has been documented, representing intraspecific in pigmentation. This expands known phenotypic variation in the .
Introduction History
First records in North America documented in 2018 publication, indicating relatively recent establishment outside range.
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- What is a species? New math formula presented | Blog
- First record of a highly melanic morph of Cyphostethus tristriatus (Fabricius, 1787) (Hemiptera: Heteroptera: Acanthosomatidae)
- First records of the juniper shield bug,Cyphostethus tristriatus(Fabricius, 1787) (Hemiptera: Acanthosomatidae), in North America