Javesella dubia
This record describes Javesella dubia (species). Recorded family: Delphacidae. Recorded order: Hemiptera.
Identification and Appearance
Length c. 2.5 - 3.5 mm). Both macropterous and brachypterous forms exist, and colouration varies. The forewing is brown, and has an asymmetrical apex. The frons is dark with paler keels. Males tend to be darker than females. Male genital segment at tip of abdomen, viewed from side, has a nearly straight edge. Dissecton of male genitalia is needed to confirm ID. Javesella is a difficult genus, and care is needed to separate species. Dissection of male genitalia is advised for verification. Good quality photos of a specimen from top down will support ID, plus detailed photographs of genital segment of male from top/side/rear. Note habitat and host-plant. Common (ref.: UK Auchenorrhyncha checklist 2021) Occasional; probably under-recorded due to ID difficulty https://www.britishbugs.org.uk/homoptera/Delphacidae/Javesella_dubia.html
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera
- Family
- Delphacidae
- Genus
- Javesella
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
On grasses especially in woodlands
Seasonal Activity
Adult: May to September.
Additional species information
Recorded status
Common (ref.:
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Javesella dubia. 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 Javesella dubia (10)
Frequently Asked Questions About Javesella dubia
What is Javesella dubia?
Javesella dubia is a species in the family Delphacidae, within the order Hemiptera.
How big is Javesella dubia?
c. 2.5 - 3.5 mm). Both macropterous and brachypterous forms exist, and colouration varies. The forewing is brown, and has an asymmetrical apex. The frons is dark with paler keels. Males tend to be darker than females. Male genital segment at tip of abdomen, viewed from side, has a nearly straight edge. Dissecton of male genitalia is needed to confirm ID.
Where is Javesella dubia found?
Habitat: On grasses especially in woodlands
When is Javesella dubia active?
Javesella dubia: seasonal activity - Adult: May to September..