Wiktionary
dog-day cicada
n. A large American cicada (''C. pruinosa''), which trills loudly in midsummer.
WordNet
dog-day cicada
n. its distinctive song is heard during July and August [syn: harvest fly]
Wikipedia
Dog-day cicada
Tibicen canicularis, also known as the dogday harvestfly or dog-day cicada is a species of annual cicada.