Cymus claviculus
This record describes Cymus claviculus (species). Recorded family: Lygaeidae. Recorded order: Hemiptera.
Identification and Appearance

A small bug - length 2.5 to 3.5 mm, with a narrow shape. Cymus species have a distinctively punctured head, pronotum, scutellum and forewings. Cymus claviculus has a narrow band without punctures just next to the suture between the clavus and corium. Your photographs should clearly show details of forewings and the impunctate band near the corio-claval suture. This can be difficult to see or photograph in the field, and we recommend that a specimen is examined and photographed. Dry grasslands and heaths, associated with knotgrass and toad-rush. common (ref.: British Heteroptera checklist 2021 on British Bugs website ) https://www.britishbugs.org.uk/heteroptera/Lygaeidae/cymus_claviculus.html
Classification
Habitat and Range
Habitat
Dry grasslands and heaths, associated with knotgrass and toad-rush.
Seasonal Activity
Adult: All year
Additional species information
Recorded status
common (ref.: British Heteroptera checklist 2021 on
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Cymus claviculus. Species-specific details appear above.
Group overview
Hemiptera (true bugs) includes over 80,000 described species across cicadas, aphids, leafhoppers, shield bugs, and bed bugs. Aphids alone cost global agriculture an estimated $2.5 billion annually in crop losses.
Ecological role of the group
Many Hemiptera are essential food sources for birds and predatory insects. Cicadas provide massive nutrient pulses during emergence events - a single Brood X emergence can involve trillions of individuals across 15 states.
Economic and practical significance of the group
The brown marmorated stink bug (Halyomorpha halys) caused $37 million in apple crop losses in a single year in the U.S. Mid-Atlantic region. Bed bug infestations in the U.S. increased by 500% between 2001-2010, costing the hotel industry hundreds of millions annually.
Recorded sources for this group: USDA, EPA, University research. Imported estimates may describe particular regions or reporting periods.
Photos of Cymus claviculus (2)
Frequently Asked Questions About Cymus claviculus
What is Cymus claviculus?
Cymus claviculus is a species in the family Lygaeidae, within the order Hemiptera.
How big is Cymus claviculus?
2.5 to 3.5 mm, with a narrow shape.
Where is Cymus claviculus found?
Habitat: Dry grasslands and heaths, associated with knotgrass and toad-rush.
When is Cymus claviculus active?
Cymus claviculus: seasonal activity - Adult: All year.
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