Tuesday, 15 August 2000

Grey Cracker (Hamadryas februa)

OTHER NAMES: N/A
Latin Etymology: Hamadryas (a mythical nymph) februa (purification)

Adult Grey Cracker (Hamadryas februa) at Tarcoles, Costa Rica - November 2025

Featured Subspecies: Hamadryas februa ferentina
Length: ?  /  Wingspan: 70-86mm
NO UK STATUS IUCN Red List: Not Yet Evaluated 

A large cryptically coloured butterfly species which can be found primarily from Mexico to Argentina. They get the name "cracker" from the fact that unlike many species of butterfly, they intentionally make a loud audible sound to deter potential predators. As adults they feed on sap and rotten fruit. 
 
Related Species: 
Order: Lepidoptera 
Family: Nymphalidae 
Genus: Hamadryas
SUBSPECIES: H. f. ferentina, H. f. februa
 
- Sighting Locations -

COSTA RICA 
A common resident
- COSTA RICA 2025 TRIP: Seen at Tarcoles

Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto

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