The term SUMMER SWARMER is a combination of two words. The first word, 'SUMMER, ' refers to the warmest season of the year, typically occurring between June and August in the Northern Hemisphere. The second word, 'swarmer, ' is a four-letter word meaning 'a large number of insects or other small creatures moving together.' In this case, the term SUMMER SWARMER is referring to the large number of gnats that often appear during the SUMMER months.