Bonjour,
Encore une trouvaille dans notre jardin, au battage sur Crataegus monogyna.
Je pense à Cacopsylla peregrina.
La copie conforme (?) d'un adulte sur le site British Bugs.
Merci pour vos avis.
Cordialement,
Christian B
Christian Berquer : France : BARNEVILLE CARTERET : 50270 : 01/09/2022
Altitude : NR - Taille : +/- 3 mm Réf. : 310023
Christian Berquer : France : BARNEVILLE CARTERET : 50270 : 01/09/2022
Altitude : NR - Taille : +/- 3 mm Réf. : 310024
A small psyllid that is difficult to distinguish from C. mali from the male genitalia. Both show a striking colour change from early to late summer. Initially yellow-green, late summer specimens tend to be chestnut-brown and black.
Aime-toi, le ciel t’aimera Despise not the weak : the gnat stings the eyes of the lion.
Ce qui veut donc dire, Lauzette, qu'il serait plus sage de rétrograder et se contenter de Cacopsylla sp., non ?
D'autant plus que dans notre jardin, il y a plusieurs pommiers proches de l'aubépine...
C. mali is almost indistinguishable from the very common C. peregrina, and is certainly separable only on the male genitalia. Both species darken to red-brown in the autumn, and female genitalia are very similar. Host plants can provide a useful guide, but apple and hawthorn are related, and both species can be locally abundant, making any diagnosis on that basis unreliable. The nymphs do differ, however, in details of setae and in mali lacking the brown wing-bud stripes typical of peregrina. Compare also C. visci.
A common species across the UK. The host plants are apple trees.
Aime-toi, le ciel t’aimera Despise not the weak : the gnat stings the eyes of the lion.
adulte sur le site British Bugs.
