Auchenorrhyncha


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Auchenorrhyncha

[‚ȯk·ə·nə′riŋ·kə]
(invertebrate zoology)
A group of homopteran families and one superfamily, in which the beak arises at the anteroventral extremity of the face and is not sheathed by the propleura.

Auchenorrhyncha

 

a suborder of insects of the order Homoptera. The suborder Auchenorryncha, which embraces more species than any other suborder of Homoptera, includes suctorial insects of varying external appearance and size that are harmful to plants. The approximately 17,000 species are distributed throughout the world, with the exception of the arctic and subarctic regions. About 2,000 species are found in the USSR.

The head and thorax of the insects are immovably joined, and the organs of vision are represented by a pair of compound eyes and two or three simple eyes. The legs are ambulatory. The hind legs are elongated and saltatorial, and the tarsus consists of three segments. The anterior wings may be rooflike, membranous, or chitinous. The venation is longitudinal and latitudinal. The females possess an ovipositor.

Metamorphosis is incomplete. The larva develops through five stages. The adults live on plants. Some live under the cover of a foamy liquid they themselves produce, while others live in the soil. Most species produce one or two generations a year, while some produce four or five. Life expectancy ranges from two years (Cicadetta montana) to 17 years (the family Cicadidae). In fossil form the Auchenorrhyncha date from the Permian.

The Auchenorrhyncha harm plants by sucking their juices, by damaging shoots with the ovipositor during the laying of eggs, and by facilitating the transmission of viral plant diseases. Deltocephalus striatus, for example, damages grain crops, and Cicadatra ochreata and Cicadatra querula harm cotton crops.

REFERENCES

Emel’ianov, A. F. “Podotriad Cicadinea (Auchenorrhyncha)—Tsikadovye.” In Opredelitel’ nasekomykh Evropeyskoi chasti SSSR, vol. 1. Moscow-Leningrad, 1964.
Zhizrí zhivotnykh, vol. 3. Moscow, 1969.

I. V. KUDRIASHOVA

References in periodicals archive ?
Cicadas (Hemiptera, Auchenorrhyncha, Cicadidae) from Brasilia (Brazil): exuviae of the last instar with key of the species.
Diversity and conservation status of prairie endemic Auchenorrhyncha (Homoptera) in alvars of the Great Lakes region.
During this survey, specimens representing at least 103 species (not all could be identified to species) within 10 families of the homopteran suborder Auchenorrhyncha were collected.
Dryinidae (Hymenoptera: Chrysidoidea) are parasitoids of Hemiptera Auchenorrhyncha.
The Dryinidae (Hymenoptera: Chrysidoidea) are parasitoids of Auchenorrhyncha (Hemiptera) (Guglielmino & Buckle 2003, 2010; Guglielmino et al.
Similar relationships are widely recorded in several groups of Sternorrhyncha and Auchenorrhyncha (Delabie 2001; Naskrecki & Nishid 2007; Verheggen et al.
Some genera and species of typhlocybine leafhoppers from Uganda, East Africa (Homoptera, Auchenorrhyncha, Cicadellidae).
The Dryinidae and Embolemidae (Hymenoptera: Chrysidoidea) are parasitoids of Auchenorrhyncha (Homoptera) (Guglielmino & Olmi 1997, 2006, 2007; Olmi 1996).
Field studies on the fauna associated with alfalfa in Argentina demonstrated that one of the most abundant and frequent Auchenorrhyncha is the treehopper Ceresa nigripectus Remes Lenicov 1973 (Meneguzzi 2009).
For the identification of some Auchenorrhyncha species, the author is indebted to Dr Michael Stiller (ARC-Plant Protection Research Institute, Pretoria, South Africa).
Auchenorrhyncha, especially the families Delphacidae ("planthoppers") and Cicadellidae ("leafhoppers"), are phytophagous insects distributed worldwide.