Planthopper

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Planthopper
Temporal range: Late Triassic–Recent
Flatida rosea (Flatidae)
adults and nymphs
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Fulgoromorpha
Evans, 1946
Families

See text

A planthopper is any

anal vein in the forewing, and the thickened, three-segmented antennae, with a generally round or egg-shaped second segment (pedicel) that bears a fine filamentous arista
.

Overview

Planthoppers are laterally flattened and hold their broad wings vertically, in a tent-like fashion, concealing the sides of the body and part of the legs.[3] Nymphs of many fulgoroids produce wax from special glands on the abdominal terga and other parts of the body. These are hydrophobic and help conceal the insects. Adult females of many families also produce wax which may be used to protect eggs.[4]

Planthopper (Fulgoridae: Pterodictya reticularis) with abdominal filaments of ketoester wax

Fulgoroid nymphs also possess a biological gear mechanism at the base of the hind legs, which keeps the legs in synchrony when the insects jump. The gears, not present in the adults, were known for decades[5] before the recent description of their function.[6]

Planthoppers are often

vectors for plant diseases, especially phytoplasmas which live in the phloem of plants and can be transmitted by planthoppers when feeding.[7]

A number of extinct members of Fulgoroidea are known from the fossil record, such as the

Emiliana from the Green River Formation (Eocene) in Colorado.[8]

Both planthopper adults and nymphs feed by sucking sap from plants; in so doing, the nymphs produce copious quantities of

sooty mould often grows.[3] One species considered to be a pest is Haplaxius crudus, which is a vector for lethal yellowing, a palm disease that nearly killed off the Jamaican Tall coconut variety.[9]

Classification

As mentioned under Auchenorrhyncha, some authors use the name Archaeorrhyncha as a replacement for the Fulgoromorpha.

The extant families of Fulgoroidea are:[4]

Extinct families include:

Gallery

Notes

  1. .
  2. .
  3. ^ a b Boggs, Joe (14 June 2016). "Planthoppers". Bug Bytes. Ohio State University Extension. Retrieved 29 January 2021.
  4. ^ .
  5. ^ Sander, K. (1957). "Bau und Funktion des Sprungapparates von Pyrilla perpusilla Walker (Homoptera – Fulgoridae)". Zoologische Jahrbücher: Abteilung für Anatomie und Ontogenie der Tiere Abteilung für Anatomie und Ontogenie der Tiere. 75: 383–388.
  6. S2CID 24640726
    .
  7. .
  8. ^ Shcherbakov, D. (2006). "The earliest find of Tropiduchidae (Homoptera: Auchenorrhyncha), representing a new tribe, from the Eocene of Green River, USA, with notes on the fossil record of higher Fulgoroidea" (PDF). Russian Entomological Journal. 15 (3): 315–322. Archived from the original (PDF) on 2012-04-02.
  9. .

References

External links