About Aphrophora alni (Fallén, 1805)
Aphrophora alni, commonly known as a large froghopper, has adult individuals that reach 9–10 millimetres (0.35–0.39 in) in length, with females usually slightly larger than males. The basic body coloration is most commonly brown. The forewings have two distinct clear patches along their margins. A median keel is present on both the head and pronotum. The head has one pair of compound eyes and two simple eyes called ocelli. The legs are strongly developed and adapted for jumping. The tibiae of the hind pair of legs bear several spines.
This species is quite common and widespread. It is present across most of Europe, the eastern Palearctic realm, the Near East, and North Africa, and it is naturalized in North America.
These froghoppers live in both dry and moist lowland and mountainous habitats, including forest edges, hedgerows, meadows, gardens, and parks. They can be found from lowlands up to an elevation of 1,500 metres (4,900 ft) above sea level.
