
Catherine Reymonet : France : Peyrelevade : 19290 : 06/09/2024
Altitude : 774 m - Taille : 1-2 mm ?
Réf. : 348627

Catherine Reymonet : France : Peyrelevade : 19290 : 06/09/2024
Altitude : 774 m - Taille : 1-2 mm ?
Réf. : 348628

Catherine Reymonet : France : Peyrelevade : 19290 : 06/09/2024
Altitude : 774 m - Taille : 1-2 mm ?
Réf. : 348629
D'après InfluentialPoints, ce pourrait être Cryptomyzus galeopsidis ?
Il y a beaucoup de Ribes ici, de diverses espèces. Mais les feuilles portant les pucerons n'étaient pas enroulées.Adult apterae of Cryptomyzus galeopsidis on their primary host are pale greenish-white, or sometimes yellowish, often with a darker green spinal stripe (see first picture below). Their antennae are longer than the body with the antennal terminal process 9-14 times longer than the base of antennal segment 6. The longest hair on the third antennal segment is distinctly longer than the basal diameter of that segment. Abdominal segments I-V each have 6 thick capitate hairs, two spinal, two pleural and two marginal, arising from tuberculate bases (see first picture below of aptera on its secondary host - hemp nettle) . Their siphunculi have the distal third slightly swollen, and are 1.1-2.1 times longer than the cauda. The body length of apterae is 1.3-2.6 mm.
In spring Cryptomyzus galeopsidis lives on the underside of young leaves of blackcurrant (Ribes nigrum) and rarely on other Ribes species. It does not induce a gall on blackcurrant. In June it migrates to hemp nettle (Galeopsis), and other Lamiaceae, where it curls and rolls the young leaves. Some populations do not migrate from Ribes, and are currently regarded as subspecies of Cryptomyzus galeopsidis. The species is common and widespread throughout Britain and Europe, and is also found in the Russian Far East and North America.
Ce pourrait être possiblement Cryptomyzus ribis ou C. stachydis qu'ils ne présentent pas.
Selon W. Ellis, ce pourrait bien être Cryptomyzus galeopsidis. Qu'en pensez-vous ?