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Mexican Beaded Lizard.


Mexican Beaded Lizard.
Photo Information
Copyright: Luis Leal (Luis52) Gold Star Critiquer/Gold Note Writer [C: 1110 W: 5 N: 3457] (12761)
Genre: Animals
Medium: Color
Date Taken: 2008-10-08
Categories: Reptiles
Camera: Nikon D80, Sigma 105mm f/2.8 EX DG Macro
Exposure: f/7.1, 1/200 seconds
Photo Version: Original Version
Theme(s): Reptiles - Lizards, Chuckwallas, Agamas & Tegus 1, RARE or SIGNIFICANT contributions to TN 4 [view contributor(s)]
Date Submitted: 2008-10-21 9:06
Viewed: 1389
Points: 39
[Note Guidelines] Photographer's Note
Very Rare Lizard. First in TN

The beaded lizard (Heloderma horridum) is a species of venomous lizard found in Guatemala and Mexico. Along with its close relative, the Gila monster (Heloderma suspectum), it is known as one of the two truly venomous lizards in the world. It is larger than the Gila monster but has duller coloration. Beaded lizards are black with yellowish bands of differing width, depending on the subspecies. A specialized predator that feeds primarily upon eggs, the primary use of its venom is still a source of debate among scientists. However, this venom has been found to contain several enzymes useful for manufacturing drugs in the treatment of diabetes, and further research on the pharmacological use of its venom is still ongoing.

Threatened throughout its range by overcollection and habitat loss, it is a CITES protected animal. The Montagua Valley subspecies (H. h. charlesborgeti) is one of the rarest lizards in the world, with a wild population of less than 200 animals.

Adult beaded lizards range from 24 inches (61 cm) to 36 inches (91 cm) inches in length. It is substantially larger than the Gila monster, which only reaches lengths of 12 inches (30 cm) to 16 inches (41 cm). Although males are slightly larger than females, the animals are not sexually dimorphic. Both males and females are stocky with broad heads, although the males tend to be broader. The beaded lizard's scales are small, bead-like and non-overlapping. Except for the underside of the animal, the majority of its scales are underlaid with bony osteoderms. Their base color is black and marked with varying amounts of yellow spots or bands, with the exception of H. h. alvarezi, which tends to be all black in color. The beaded lizard also has a short tail which is used to store fat so the animal can survive during months of estivation. Unlike many other lizards, this tail does not autotomize and cannot grow back if broken. The beaded lizard has a forked black tongue which it uses to smell, with the help of a Jacobson's organ; it sticks its tongue out to gather scents and touches it to the opening of the organ when the tongue is retracted.

Saludos
Luis52.

SelenE, rousettus, Alex99, MMM, Adanac, eqshannon, CeltickRanger, fiyo, jaycee, nglen, Argus, matatur, Juyona has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
To Heloderma: Many Thanks.Luis52 1 12-15 10:45
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Critiques [Translate]

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3816 W: 190 N: 11348] (34987)
  • [2008-10-21 9:39]

Hola Luis,
Cuánto tiempo sin verte amigo!
Congratulations for this fine first on TN!
A fine capture of this rare species of lizard, the Beaded Lizard taken from a great POV with fine sharpness to show the warning-coloured beaded scales of this venomous lizard. Excellent lighting and composition.
TFS this excellent contribution.
Un abrazo grande,

Ivan

Hola Amigo,
Where have you been Luis, this is the first close-up from you I'm seeing in quite a long time. And now you are giving us a valuable present in this excellent capture of a Heloderma horridum specimen in its natural environment, a rare sight indeed my friend, one of the two poisonous lizards in the whole World and a first for TN! Thank you indeed for sharing this fine image with us Luis.
Cheers,
Mehmet

nice one, TFS Ori

  • Great 
  • mariki Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1060 W: 61 N: 2306] (9467)
  • [2008-10-21 10:18]

Hello Luis,

What a odd lizard! Excellent composition. Great POV, DOF and focus. Superb detail of the scales. Good light and natural colours. Congratulations for your finding!
Cheers,
Mariki

  • Great 
  • nglen Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2908 W: 34 N: 8625] (32146)
  • [2008-10-21 10:24]

Hi Luis. This such an unusual looking lizard. Which you have taken with such fine detail and colours. You have captured the markings so well . a good POV and use of the light . well done TFS.
Nick..

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2493 W: 11 N: 6885] (21912)
  • [2008-10-21 10:30]

Hey Cousin, where have you been? You've been missed. This is some way to return with an amazing Lizard that has never been seen on TN before. I have seen several Gila Monsters but never a Mexican Beaded. Excellent closeup showing the wonderful face and eye, the beautiful beaded skin and the strange pointed tail. Colors and details are magnificent. Hope you'll be posting more often - you don't have to wait for another rarity.

Jane

  • Great 
  • fiyo Gold Star Critiquer/Gold Note Writer [C: 987 W: 5 N: 2762] (10618)
  • [2008-10-21 12:22]

Hello Luis,
Great shot, very good POV and pose. Very well done.TFS.

Hello Luis
nice and clear shot of this lizard but it is not a Heloderma horridum but a kind of skink.
Tfs
Ilias

I no longer wonder how the Native Americans got their style of beading...they mimicked nature perfectly and I am sure the natives of Mexico did the same..not sure what that would be...Aztec? I am not sure..my history is very bad..but this shows how it is done both in photo and in how it was transferrred to artwork by natives!
Bob

  • Great 
  • Adanac Gold Star Critiquer/Gold Note Writer [C: 1169 W: 1 N: 5208] (17609)
  • [2008-10-21 18:50]

Hola Luis,
Aw you have returned my friend, all is well I hope. What an incredible image of this rare lizard, he is a different looking fellow, great camera work as always. Thank you Luis and hello from Lucy.
Rick

  • Great 
  • MMM Gold Star Critiquer/Gold Note Writer [C: 921 W: 0 N: 1985] (8905)
  • [2008-10-21 18:57]

Hi Luis
Nie presentation.Good POV and sharp image.Detail and colors are excellent.
TFS Michel

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3585 W: 143 N: 5669] (18533)
  • [2008-10-21 22:48]

Hi Luis.
What a nice shot. I have never seen such beauty. Great presentation of the wonderful animal. POV and composition are superb. All charming details and features of the animal are visible perfectly. Well done and kind regards.
Alexei.

hello Luis

welcome back ! longtime we did'nt see you on TN,
excellent shot of this very rare Lizard with a fine POV, DOF,
and the way it is framed diagonally in the image,
almost camouflaged with his environement,
excellent sharpness and details of the patterns, TFS

Asbed

  • Great 
  • SelenE Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2405 W: 63 N: 4227] (13822)
  • [2008-10-23 12:58]

Hola Luis,
What an interesting creature this is... Never saw it before, and congrats for being the first here. Thanks for sharing this beauty amigo.
Un cordial saludo,
Selen

  • Great 
  • joey Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2001 W: 226 N: 6845] (24727)
  • [2008-10-23 13:32]

Hi Luis,
what a brilliant photo of this rare lizard.
It's very sharp with great detail.
Well composed.
Spot-on exposure.

Well done,
Joe

Hi Luis
Your notes are very interesting. I wish this beaded lizard good luck for it's existence here on earth. Well composed, good colour and lighting.
TFS Janice

WOW! What an amazing capture! Thank you for sharing this with us. Fabulous shot!

  • Great 
  • Juyona Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2262 W: 10 N: 2630] (15565)
  • [2008-10-29 1:34]

WOOW,
realmente desconocido este reptil,
preciosos detalles y magnífico trabajo,
saludos Luis.

Hola amigo Luis,
welcome again after one and half months. I miss your great posts. I'd like to see them more often.
This is wonderful capture of one of two venoumous lizards. Everything perfect, from sharpness to colors. I learnt this and its relative H. suspectum about 18 year ago in vertebrate and herpetology lessons. But I know it from only books, not in nature. Now, I tell two venomous species to my biology students. Thanks for sharing it with informative notes. gracias y saludos amigo
PS: I look at it again. I think it belongs to another group lizards, skinks. But your shot still great.
Ahmet

The lizard in the photograph is actually an alligator lizard of the genus Gerrhonotus which belongs to the family Anguidae characterized by the lateral grove separating the ventral scales from the doraal ones. Great photograph.

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