Rhododendron Leafhopper

Graphocephala fennahi · Order: Hemiptera · Family: Cicadellidae

Damages trees, gardens or crops. It feeds on rhododendron sap and can damage those garden plants.

Source: Wikipedia

Rhododendron Leafhopper
Photo: Claus Giloi, CC BY

Adults are about 0.35 in long, with green wings that have purple tips and two orange stripes, plus yellow heads, undersides and legs and a purple stripe across the top of the head. They live in grassy, brushy and mixed hardwood areas where rhododendrons or azaleas grow, including gardens and parks. One generation appears each year from late spring through November; eggs are flat, oval and laid inside leaf tissue.

Source: Wikipedia

How to recognize it

Green wings with purple tips each show two orange stripes; the head, underside and legs are yellow with a purple stripe over the eyes.

Source: Wikipedia

Size

Males measure 7.4 to 8.8 mm and females 8.2 to 9 mm, roughly 0.35 in long.

Source: Wikipedia

How to get rid of it

Attract lady beetles, spiders and birds to eat the leafhoppers. Cover plants with fine netting that lets light and water through but blocks the insects.

Source: Wikipedia

Where it lives

Found in grassy lands, brushy spots and mixed hardwood forests, especially where rhododendrons grow. Also common in gardens and parks with rhododendrons or azaleas.

Source: Wikipedia

What it eats

Feeds by sucking sap from rhododendron plants. Uses a proboscis to draw plant fluids.

Source: Wikipedia

Life cycle

Adults appear in late spring and die by November, giving one generation per year. Eggs are flat, oval and deposited inside leaf tissue.

Source: Wikipedia

When you see it

Active from May through November.

Source: Wikipedia

Where it comes from

Likely occurs throughout the United States and southern Canada.

Source: Wikipedia

Lookalikes

Related to cicadas, spittlebugs and treehoppers.

Source: Wikipedia

Where it is found in the US

Recorded in 29 of 51 states and DC. Most records: Massachusetts, Washington, North Carolina, New York, Pennsylvania, Oregon, Maine, Ohio.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

Can they damage my garden plants?

Yes, by sucking sap they can weaken rhododendron and azalea plants.

Source: Wikipedia

When will I see them in my garden?

They show up from late spring (May) and remain until November.

Source: Wikipedia

How can I keep them away?

Use row covers over the plants and encourage natural predators like lady beetles and birds.

Source: Wikipedia

Same family (Cicadellidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Graphocephala_fennahi

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.