grape leafhopper

Lemma

grape leafhopper

Etichetta di dominio

EN

Etichetta grammaticale

n.

Definizione

Small leaping insect that sucks the juices of plants. 1

Nota

In the first warm days of spring the adults become active, feeding on any green foliage before grape leaves appear. In May, leafhoppers go to vines and feed but little damage is done at this time. After feeding for 2-3 weeks, females oviposit just below the surface of leaf tissue. [...] Both nymphs and adults suck sap from leaves, resulting in pale stippling. With heavy infestations, leaves become yellow or brown, and drop. Numbers are highest late in the summer, especially on end vines and border rows. Quality (sugar content) and quantity of fruit may be greatly reduced. However, high populations are required to reduce fruit quality. 2

Contesto

Grape leafhopper adults are orange-yellow with some dark spots and yellow lines on the forewings and about 1/8 inch long. 3

Trascrizione fonetica

[greɪp liːfhɒp.ər] 4

Sinonimi e Antonimi
ND
Abbreviazioni
ND
Etimologia

Grape: mid-13c., from O.Fr. grape "bunch of grapes, grape" (12c.), probably a back formation from graper "steal; grasp; catch with a hook; pick (grapes)," from a Frankish word, from P.Gmc. *krappon "hook"
Leaf+hopper
leaf: O.E. leaf "leaf of a plant, page of a book," from P.Gmc. *laubaz.
hopper: "person or animal that hops," mid-13c., agent noun from hop (v.). 5

Etichetta di paese
ND
Ente

Università degli Studi di Genova - Facoltà di Lingue e Letterature Straniere - Corso di Laurea in Teorie e tecniche della mediazione interlinguistica

Data della scheda
Fri Jun 2 00:00:00 2006
Autore

Vera Copello rev. Gerbaudo

Fonti

1 : «http://www.lexic.us/definition-of/leafhopper », (16/11/2011)

2 : «http://www.virginiafruit.ento.vt.edu/GLH.html»,(16/11/2011)

3 : «http://grapes.msu.edu/grapeleafhopper.htm», (02/06/2006)

4 : «http://dictionary.cambridge.org/», (16/11/2011)

5 : «http://www.etymonline.com/index.php/», (16/11/2011)

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