ABSTRACT

Parking a car under a broadleaf in the middle of summer often results in a sticky coat on the roof and hood, as though sugar water had been poured over them. The culprits can be found in the tree above the parked vehicle, aphids sucking on the phloem of plants and excreting a sugar-rich fl uid that settles like dew, the honeydew. In biblical times, it was probably the sugar excretion products of a scale bug that was the manna, which saved the Israelits from starvation while crossing the Sinai desert (Hoffmann et al. 2003). In Greek mythology, drips from the Manna-ash (Fraxinus ornus) nursed the infant god Zeus on the island of Crete.