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Butterfly populations are a very good indicator of the health of an area's ecosystem !!
Images contributed by U.K 
photographer Steve Oddy.
   Ornythion Swallowtails are found primarily in citrus groves and gardens.
   Adults tend to be active from April to September.
   There are typically two generations per year.
   Dorsal forewing spots are yellow to white, and there are
 marginal row of spots close to the outer edges of wing.
   Their tails are wide and entirely black.
   Females have two color and pattern sets.
   One is very similar to the male, (monomorphic) and one is primarily black with a marginal row of large grayish green spots on the dorsal side of the hindwing.
Ornythopia Swallowtail.png
Caterpillar diet: leaves of citrus trees.
Caterpillar & chrysalis images
Adult diet: flower nectar
Ornythion caterpillar.jpg
Ornythion Swallowtail caterpillar.jpg
 Adult wingspan: 83 – 115 mm. / 8.3 - 11.5 cm /  3 1/4 - 4 1/2 inches .
Family: Papilioninae
The single biggest threat to butterfly survival is habitat destruction!!
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