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Hamadryas februa

Hamadryas februa
Photo Information
Copyright: Jesus Linares (jlinaresp) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1303 W: 56 N: 4023] (17292)
Genre: Animals
Medium: Color
Date Taken: 2010-07-04
Categories: Insects
Camera: Olympus SP565 UZ
Exposure: f/4, 1/800 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2010-07-08 7:11
Viewed: 3635
Points: 28
[Note Guidelines] Photographer's Note
Februa Cracker - Hamadryas februa - HÜBNER, 1823

This species is a master of camouflage, but in the branches of a pine tree in my yard has not been very effective in hiding!

Thanks by stop and visit!


Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Nymphalidae
Sub-family: Nymphalinae
Scientific name: Hamadryas februa

There are 20 members of the genus Hamadryas, commonly known as Crackers due to the ability of the males of several species to produce a clearly audible sound which is similar to the crackling of bacon in a frying pan.

The sound is produced as the butterflies take off, and is made by twanging a pair of spiny rods at the tip of the abdomen against bristles on the valvae ( the male's anal claspers ). Only males can produce the sound, but both sexes can detect it - their wings have tiny hollow cells covered in membranes which vibrate in response to sound and stimulate nerve endings. The purpose of the sound is not fully understood : it may deter competing males from occupying the same territory, and may also act as a trigger to initiate the first response from a female during courtship.

Hamadryas butterflies use their ears to detect crackling noises made by territorial males. The sound is made by twanging 2 tiny prongs on the tip of the abdomen against bristles on the valvae. The males habitually bask on tree trunks, where they wait to intercept passing females.

All Hamadryas species have a beautiful calico pattern on the upperside. In many there is a series of submarginal ocelli on the hindwings, and distinct kidney-shaped stigmata in the discal cells of fore and hind wings. In several species such as februa and glauconome the ground colour is greyish and the pattern acts as an extremely effective camouflage against the bark of trees. In other species such as amphinome, laodamia and velutina the wings are velvety black with a blue sheen and a pattern of bright blue spots.

Most Hamadryas species are found only in Central and South America, although 8 have been recorded sporadically in the southern USA.

Hamadryas februa is the commonest and most widespread species, found from southern Texas to Uruguay and Paraguay.

This species is found in degraded rainforest and deciduous forest habitats, including orchards and the forested margins of cattle ranches, at altitudes between sea level and about 800 metres.

Adult behaviour:
In common with other Hamadryas species februa can often be seen basking on tree trunks, in a head-downward position and with the wings flattened against the bark. They will bask in this position for long periods to await potential mates. They commonly settle at a height of about 2 metres but if disturbed by humans they fly up and resettle higher up, either on the same tree or on another nearby. They remain high in the trees until the intruder leaves, and then descend the tree trunk in a series of short flights, dropping a short distance each time until after several minutes they resume their original position.

The butterflies are active from sunrise to sunset, and are rarely seen away from tree trunks, but also sometimes bask on rock faces or tree foliage. On a few occasions I have also seen them settling on the ground in lightly vegetated forest clearings.

For more INFO: (Hamadryas februa)

Model: SP565UZ
Software: Picasa 3.0
Exposure Time: 10/8000 sec
F-Stop: f/4.0
ISO Speed Ratings: 64
Focal Length: 1600/100 mm
Date Taken: 2010-07-04 08:12
Metering Mode: Spot
Flash: Flash did not fire
File Size: 259 kb

maurydv, horias, ramthakur, Argus, flashpoint, uleko, marius-secan has marked this note useful
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ThreadThread Starter Messages Updated
To Black44: RE: Jose Antoniojlinaresp 1 07-08 16:17
To joska: Re: Szabo,jlinaresp 1 07-08 07:45
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Critiques [Translate]

Ciao Jesus,
una farfalla straordinariamente bella ripresa in una posa fantastica, perfetta nitidezza con ottimi dettagli, magnifica composizione in uno scenario molto bello.
Grazie e complimenti
Buona giornata

  • Great 
  • horias Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 837 W: 58 N: 2084] (11033)
  • [2010-07-08 7:20]

Hi Jesus
Waw...what a great butterfly! I never see this specie before!
Details and colors are fantastic.
Congratulation for this beauty!

Now that's some butterfly, Jesus!
I always find the species of butterflies you capture in your country very unique and exciting. This one is no exception.
The POV you have used is very bold and effective. The patterns, colours and details on the wings are simply amazing.

  • Great 
  • joska Gold Star Critiquer/Gold Note Writer [C: 806 W: 0 N: 4092] (22535)
  • [2010-07-08 7:26]
  • [+]

Hi Jesus,

Very good photo of this interesting Butterfly, TFS! You know now wath is an close up Lens?

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2010-07-08 7:37]

Hello Jesús,
A fine capture Hamadryas februa in a typical head-down pose for the cracker species. I have seen the similar feronia in Trinidad and was impressed by the cracking sound in flight.
Excellent sharpness and colours in this fine dorsal POV.
Thanks and best regards,¨

Hola Jesús, tan lejos y en contacto permanente. Esto de internet ha hecho locuras últimamente, yo viendo fotos frescas de Temerla y tú del Tarrés, un pueblecito de la comarca de "Les Garrigues" al sur de la Prov. de lleida, donde la pluviometria supera con dificultades los 300 l/m2 anualmente !!

Qué decir ya de tus mariposas ( y tus trabajos)... más o menos lo de siempre, cada una con unas características pero con el denominador siempre de ser trabajos cuidados y bien trabajados.
Esta, aparte de bella, la calificaría de elegante; vaya vestido de gala !
Hoy hemos alcanzado aquí los 41ºC !!!


  • Great 
  • OzBY Gold Star Critiquer/Gold Note Writer [C: 183 W: 2 N: 351] (1355)
  • [2010-07-08 12:09]

Hello Jesus

Great picture of this butterfly
Great color and sharpness


  • Great 
  • uleko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3396 W: 172 N: 3310] (10940)
  • [2010-07-08 12:16]

Hello Jesus,
This is a really great capture of this fabulous butterfly with beautiful wing markings obviously excellent as camouflage. Even so a bird seems to have had a go at it? A lovely background and composition too.
TFS and best wishes, Ulla

Ciao Jesus, anche questa fantastica bellezza me la tengo sul deskopt, una tra le più belle farfalle che abbia mai visto dal disegno ricchissimo nitidamente ripèreso, bellissimi i colori resi naturalmente, stupenda macro, grazie amico mio per mostrami tanta bellezza, bravissimo, ciao Silvio

Hola Jesús

Vaya una nueva mariposa que tampoco había visto, parece un cuadro, con esas lineas, y circulos que dan muy buena sensación, ¿que sifnificado tendran todas estas ormas tan complicadas en las alas de las mariposas?. De todas formas una imagen con perfecta nitidez.

Un saludo de Antonio

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2010-07-08 15:25]

Non ho parole,questa farfalla e' uno spettacolo ed una gioia per gli occhi,che stupende ali,che disegni e che colori soft....la foto e' ancora una volta perfetta,forse l'avrei girata a 180 gradi...grazie ancora per questi stupendi regali!! Buon Venerdi',LUCIANO

Hello Jesus,
Exceptional capture with superb details and great composition.
Nice colours, perfect details and good focus.

ciao Jesus!
ma dove eri a fare questo scatto?
la bellezza del dettaglio e' ancora una volta sorprendente...magia delle farfalla e venezuelane grazie sERGIO

Ciao Jesus. Che bellezza! Complimenti per il dettaglio sull'impressionante trama grafica delle ali che si coniuga perfettamante con l'atrettanto interessante grafismo di sfondo.


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