Arawacus sito in Spanish is appropriately known as "Mariposa de Alas de Telaraña" meaning Butterfly with Spider Web Wings.
   This butterfly is native to Mexico, with distribution from Mexico through Central America.
    The tip of the ventral wings is orange with a black spot and 4 delicate black tails tipped in white. The dorsal side is blue (or partly blue) and black. 
   Fine-line Hairstreaks are generally, but not always identified by the small protruding hair at the bottom of the tail.
   In many butterfly species, the posterior end of the hindwings of individuals perching with their wings closed resembles a butterfly head. This ‘‘false head’’ pattern is considered an adaptation to deflect predator attacks to less vulnerable parts of the body.
   The presence of symmetrical damage in left and right wings is generally considered evidence of
failed predator attacks on perching butterflies