Lysiphlebus exploits over a hundred species of mostly small aphids, including many important pests (e.g., soybean aphid, Aphis glycines Matsumura; black bean aphid, A. fabae Scopoli; cotton aphid, A. gossypii Glover) [ 12, 13].
A significant reduction in the number of adults on plants treated with EBF was also made by Wohlers [31] who reported that when pea aphids were dislodged by exposure to synthetic EBF they moved towards neighbouring plant models while a small proportion of aphids climbed back to the original plant.
The second leaf of the source plant was infested with a small population of aphids.
I even found myself humming a little aphid-killing tune.
I possessed a small carton of live, aphid-eating ladybugs.
Experimental arena consisted of a modified glass Petri dish (2 cm. diameter) containing one aphid nymph of the second to third instar of each aphid host onto a small piece of leaf (from the host plant where each aphid species was reared).
Fauna Europaea lists six subspecies: A. f. cirsiiacanthoidis A. f. eryngii A. f. evonymi A. f. fabae A. f. mordvilkoi A. f. solanella The black bean aphid is a small, soft-bodied insect that has specialised piercing and sucking mouthparts which are used to suck the juice from plants.
In the UK, for example, there was not a single field trial of GM wheat between 2002 and 2012, when a small trial was conducted to assess aphid, predator and parasitoid behaviour in GM wheat producing an aphid alarm pheromone (Beale et al., 2006).
As a gall matures, a small pore opens, enabling fertile aphids to emerge and disperse and predators to enter.
The species forms spiral galls on the petioles of poplar leaves at budburst and these galls remain tightly closed for two to three months until the aphids create a small hole, the ostiole, through which the winged migrant adult morphs exit [ 13].
