The discovery last month of an aphid-sized insect could spell peril for citrus plants in Marin County. The Asian citrus psyllid, which was found in a trap in northeastern Novato on Nov. 22, is one of the world’s most dangerous threats to citrus flora and related plants such as curry leaf trees.
On its own, the insect can wreak havoc to a plant’s new growth by sucking the liquid straight out of it. But the…