Polymerus unifasciatus
This record describes Polymerus unifasciatus (species). Recorded family: Miridae. Recorded order: Hemiptera.
Identification and Appearance

Length c. 6 mm. The upper surface is covered in scale-like golden or silver hairs and the tibiae have black spines; pronotum is mostly black, with the rear margin narrowly yellow. The corium is pale yellow and black, with a large paler area between the outer margins of the corium and the dark clavus. The cuneus has an reddish mark. Usually found in association with bedstraws (Galium sp.) in a variety of habitats. A widespread but rather local species. (Note that Yorkshire population has reduced yelow markings - see https://www.britishbugs.org.uk/heteroptera/Miridae/polymerus_unifasciatus.html ) https://www.britishbugs.org.uk/heteroptera/Miridae/polymerus_unifasciatus.html
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
- Suborder
- Heteroptera
- Superfamily
- Miroidea
- Family
- Miridae (Plant Bugs)
- Subfamily
- Mirinae
- Tribe
- Mirini
- Genus
- Polymerus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Usually found in association with bedstraws (Galium sp.) in a variety of habitats.
Seasonal Activity
Adult: June to September.
Additional species information
Recorded status
A widespread but rather local species. (Note that Yorkshire population has reduced yelow markings - see
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Polymerus unifasciatus. 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 Polymerus unifasciatus (7)
Frequently Asked Questions About Polymerus unifasciatus
What is Polymerus unifasciatus?
Polymerus unifasciatus is a species in the family Miridae, within the order Hemiptera.
How big is Polymerus unifasciatus?
c. 6 mm. The upper surface is covered in scale-like golden or silver hairs and the tibiae have black spines; pronotum is mostly black, with the rear margin narrowly yellow. The corium is pale yellow and black, with a large paler area between the outer margins of the corium and the dark clavus. The cuneus has an reddish mark.
Where is Polymerus unifasciatus found?
Habitat: Usually found in association with bedstraws (Galium sp.) in a variety of habitats.
When is Polymerus unifasciatus active?
Polymerus unifasciatus: seasonal activity - Adult: June to September..
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