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  1. tortoiseshell butterfly brilliantly colored; larvae feed on nettles
  2. tortoiseshell turtle pugnacious tropical sea turtle with a hawk-like beak
  3. superfluous more than is needed, desired, or required
  4. tortoiseshell-cat a cat having black and cream-colored and yellowish markings
  5. hairstreak butterfly small butterflies having striped markings under the wings
  6. tortoiseshell the mottled horny substance of the shell of some turtles
  7. pierid butterfly any of numerous pale-colored butterflies having three pairs of well-developed legs
  8. Dryopteris thelypteris fern having pinnatifid fronds and growing in wet places
  9. danaid butterfly large tropical butterfly with degenerate forelegs and an unpleasant taste
  10. Parathelypteris terrestrial ferns of warm and tropical Asia and North America
  11. soft-shelled turtle voracious aquatic turtle with a flat flexible shell covered by a leathery skin; can inflict painful bites
  12. ringlet butterfly any of various butterflies belonging to the family Satyridae
  13. monarch butterfly large migratory American butterfly having deep orange wings with black and white markings; the larvae feed on milkweed
  14. four-footed butterfly medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast
  15. brush-footed butterfly medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast
  16. tortoise plant South African vine having a massive rootstock covered with deeply fissured bark
  17. Sir Thomas Stamford Raffles British colonial administrator who founded Singapore
  18. genus Thelypteris marsh ferns: in some classification systems considered part of genus Dryopteris in family Dryopteridaceae
  19. Macrothelypteris medium to large terrestrial ferns of tropical Asia to Polynesia and Australia; naturalized in Americas
  20. mourning cloak butterfly of temperate regions