Stenocranus major
This record describes Stenocranus major (species). Recorded family: Delphacidae. Recorded order: Hemiptera.
Identification and Appearance

Length 5.5 to 6.5 mm. A large slender planthopper associated with Reed Canary-grass Phalaris arundinacea . Light brown with paler, orange-edged longitudinal stripe down centre of head, pronotum and scutellum. The forewing has a darker longitudinal band. The short, fine lines on the vertex are black. The vertex is short and rounded, and in side view, the head is not as elongated as the common S minutus. The parameres are slightly S-shaped. Other Stenocranus - especially S fuscovittatus , which has strongly S-shaped parameres and is associated with sedges. Photograph from top down and from side, with clear lateral view of the head Damp grassland with Phalaris arundinacea Local (ref.: UK Auchenorrhyncha checklist 2021) but may be expanding its range https://www.britishbugs.org.uk/homoptera/Delphacidae/Stenocranus_major.html
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera
- Family
- Delphacidae
- Genus
- Stenocranus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Damp grassland with
Seasonal Activity
Adult: February to October.
Additional species information
Recorded status
Local (ref.:
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Stenocranus major. 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 Stenocranus major (3)
Frequently Asked Questions About Stenocranus major
What is Stenocranus major?
Stenocranus major is a species in the family Delphacidae, within the order Hemiptera.
How big is Stenocranus major?
5.5 to 6.5 mm. A large slender planthopper associated with Reed Canary-grass
Where is Stenocranus major found?
Habitat: Damp grassland with
When is Stenocranus major active?
Stenocranus major: seasonal activity - Adult: February to October..
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