Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie

Purpose

Shelf life

CAS and PHP session cookies

Login credentials, session security

Session

Tarteaucitron

Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie

Purpose

Shelf life

atid

Trace the visitor's route in order to establish visit statistics.

13 months

atuserid

Store the anonymous ID of the visitor who starts the first time he visits the site

13 months

atidvisitor

Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at cil-dpo@inrae.fr or by post at :

INRAE

24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal

Encyclop'Aphid : l'encyclopédie des pucerons

Encyclop'APHID

Salicaceae

This family essentially brings together two genera: poplars (Populus) and willows (Salix).

There is a vast number of species of poplars and willows with about 350 species.recorded.

The Salicaceae are trees and shrubs of cold and temperate regions.

The most cmmon of the Salicaceae in France have been grouped together here.  In the Aphid key folder a simplified key based on photos is provided to help you identify aphid species.

Poplar (Populus)

The poplars comprise spontaneous and cultivated species resulting from cultivars most of which are hybrids. A quick-growing, tree, the poplar is grown for its soft, light wood used in a range of timber-related industries (paper pulp, packaging and so on).

The Table below gives the species of the most frequent aphids found on different species of poplars: white poplar (Populus alba), black poplar (P. nigra), aspen (P. tremula) and species obtained from cultivars.

Frequent aphids

Chaitophorus leucomelas
Chaitophorus populeti
Chaitophorus populialbae
Pemphigus bursarius
Phloeomyzus passerinii
Thecabius affinis

Occasional aphids

Chaitophorus tremulae
Pemphigus spyrothecae
Pterocomma populeum
Stomaphis longirostris
Thecabius lysimachiae
Tuberolachnus salignus

 

Willow (Salix)

There are great numbers of species of willow. Sizes vary enormously between heights of 0.50 to 40m. They are the first shrubs to colonize waste land. They are good at withstanding pruning and their branches grow again after every cut. Willow bark contains salicin and salicylic acid used as an ingredient in aspirin. It is employed in basket weaving and in carpentry. It is also an element in manufacture of pulp and packaging. New outlets for willow are emerging in biomass production. Finally, it can serve as an effective filter for purifying waste water.

The Table below puts together the most frequent species of aphids found on the different species of willows, such as: white willow (Salix alba), goat willow (S. caprea), grey willow (S.cinerea), crack willow (S.fragilis) and osier (S. viminalis).

Frequent aphids

Aphis farinosa
Cavariella aegopodii
Cavariella pastinacae
Chaitophorus capreae
Chaitophorus salijaponicus niger
Pterocomma salicis
Tuberolachnus salignus

Frequent aphids

Cavariella theobaldi
Chaitophorus salicti
Chaitophorus truncatus
Pterocomma pilosum
Stomaphis longirostris