Deltocephalus
Burmeister, 1838
Deltocephalus is a of in the Deltocephalinae, . Multiple within this genus are documented of economically important , particularly phytoplasma diseases affecting . Deltocephalus menoni transmits Sugarcane Leaf Disease in Sri Lanka, while D. vulgaris vectors sugarcane grassy shoot disease. The genus has been the subject of detailed behavioral and vector research, particularly regarding , plant selection, and disease transmission dynamics.
Pronunciation
How to pronounce Deltocephalus: //ˌdɛltoʊsəˈfæləs//
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Images
Habitat
fields and plantations; leaf of sugarcane . For D. menoni, specifically observed in sugarcane aged 2–11 months, with height strictly limited to canopy level regardless of crop age.
Distribution
Documented from Sri Lanka (D. menoni, D. vulgaris), with GBIF records indicating presence in Denmark, Norway, Sweden, and Vermont, USA. Specific study locations for D. menoni include Uda Walawe and Siyabalanduwa plantations in Sri Lanka.
Diet
Phloem feeder on (Saccharum officinarum and Saccharum spp.).
Host Associations
- Saccharum officinarum -
- Saccharum spp. - variety SL 96 128 specifically studied
Life Cycle
Nymphal development documented for D. menoni; nymphal period reduced by 12.78% on Leaf -infected plants compared to healthy plants. -to- conversion rate varies with leaf coloration.
Behavior
: maximum recorded flight distance of 75 m (0.08% of released individuals), mean distance 2.3 m/day, estimated potential flying distance 82.86 m. Flight height strictly limited to leaf regardless of age or wind conditions. and feeding behavior influenced by leaf lamina color: higher intensities of red and green reduce attraction, feeding amount, and longevity. No significant behavioral response to color intensity, hue, saturation, or brightness.
Ecological Role
of phytoplasma : D. menoni transmits Leaf Disease (16SrXI phytoplasma strain), and D. vulgaris transmits sugarcane grassy shoot disease. Disease-infected plants enhance vector survival and build-up, promoting disease transmission.
Human Relevance
Agricultural pest as of devastating . Control recommendations include regular and roguing of infected plants to reduce secondary transmission. data informs commercial plantation and nursery establishment spacing.
Similar Taxa
- Nephotettix cincticepsBoth are deltocephaline with studied internal reproductive ; distinct in and associations.
More Details
Vector ecology research
Detailed mark-release-recapture studies conducted with 2400 laboratory-reared D. menoni individuals using gel ink marking. Recapture rate of 7.2% with no influence of wind direction or velocity on .
Molecular detection
Nested assay developed for of grassy shoot phytoplasma in D. vulgaris, enabling precise detection in for forecasting.
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- Biology of Deltocephalus sonorus (Homoptera: Cicadellidae)12
- Flight behaviour of Deltocephalus menoni; (Hemiptera : Cicadellidae), the vector of sugarcane white leaf disease in Sri Lanka
- Effect of leaf lamina colour on the behavioral characteristics of Deltocephalus menoni (Hemiptera: Cicadellidae); A vector of sugarcane white leaf disease
- Nested PCR assay for detection of sugarcane grassy shoot phytoplasma in the leafhopper vector Deltocephalus vulgaris : a first report
- Effect of the epicuticular wax level of leaf lamina on the behaviour of leaf hopper <em>Deltocephalus menoni</em> (Hemiptera: Cicadellidae); A vector of sugarcane white leaf disease
- Tri-Trophic Relationship among Sugarcane White Leaf Disease Phytoplasma (WLDP), <em>Deltocephalus menoni</em> (Homoptera: Cicadellidae) and Sugarcane Plant in Secondary Transmission of the Disease
- Morphological and ultrastructural studies of the internal reproductive systems of two deltocephaline leafhoppers, Nephotettixcincticeps and Deltocephalusvulgaris (Hemiptera, Cicadellidae, Deltocephalinae).