Romanum est; οἶστρον, Graii vertere vocantes,)
Asper, acerba sonans, quo tota exterrita sylvis
Diffugiunt armenta.
Georg. iii, 145.
“About the Alburnian groves, with holly green,
Of winged insects mighty swarms are seen;
This flying plague, to mark its quality,
Œstros the Grecians call; ASYLUS, we:
A fierce loud buzzing breeze; their stings draw blood,
And drive the cattle gadding through the wood.