33098
The chalk grassland habitat is particularly attractive to many species of butterflies such as the Adonis blue , the chalkhill blue , marbled white , silver-spotted skipper , the dark green fritillary , and the silver-washed fritillary .
 Adonis blue, marbled white, silver-spotted skipper, dark green fritillary
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:
 Adonis blue, marbled white, silver-spotted skipper, dark green fritillary