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The male river jewelwing ( " Calopteryx aequabilis " ) performs display flights in front of the female , fluttering his forewings while keeping his hindwings still , and raising his abdomen to reveal the white spots on his wings .
 river jewelwing
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 river jewelwing