Hemipenes in females of the Mexican viviparous lizard Barisia imbricata ( Squamata: Anguidae): an example of heterochrony in sexual development. External character data from members of the Barisia imbricata complex support the validity of Tihen’s (b) arrangement, with two species (B. levicollis. PDF | Barisia imbricata imbricata is an endemic anguid lizard living in the highlands of central Mexico, mainly in the Trans-Mexican Volcanic.

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Mocquard,Etudes sur les reptiles, p.

An updated checklist of the herpetofauna from Guerrero, Mexico. Notes on the Herpetofauna of Western Mexico Tenth contribution to the herpetology of Tropical America. Web pages and scripting Jiri Hosek. Gerrhonotine lizards with the skull not widened or depressed ; frontal bone not in contact with the maxillae ; pterygoid teeth absent or vestigial; dorsal osteoderms with a well-defined, strongly thickened basal area; lateral fold moderately to well developed, with a moderate barisai large granular area ; sides of the neck finely granular; postero-ventral surfaces of the forearms and shanks granular; minimum number of scales in a single row across the nape six to ten; anterior internasals present; postrostral present or absent; subocular and postocular series well differentiated from each other; imbridata suboculars extend to the lowest primary temporal; twelve to imbricta ventral scale rows fide TIHEN In the neonates, the ovary contained oogonias and ovarian follicles, whereas the testicles showed testicular cords.


Journal of Zoological Systematics and Evolutionary Research 43 3: All neonates had hemipenes and sex could only be established barisiaa direct observation of the reproductive ducts and gonadal histology.

Imbricate Alligator Lizard (Barisia imbricata) ยท

Annals of the Carnegie Museum 54 5: Rediscovery of a Mexican lizard, Barisia imbricata planifrons Bocourt. The herpetofauna of Oaxaca, Mexico: Changes in the timing or sequence of development events are known as heterochrony. Catalogue of the slender-tongued saurians, with descriptions of many new genera and imbriata.

Amphibians and reptiles of the state of Queretaro, Mexico.

Gonadal development began at embryonic stage 33 and the hemipenes were visible at the same stage. Bulletin du Museum national d’Histoire naturelle, Paris, 4e ser. The herpetofauna of Imbrivata, Mexico: Notes on amphibians and reptiles of Michoacan, Mexico.

Phylogeny and evolution of dorsal pattern in the Mexican endemic lizard genus Barisia Anguidae: Can you confirm these amateur observations of Barisia imbricata? Descriptiones et icones amphibiorum. We describe the pattern of sexual development in the viviparous Mexican lizard Barisia imbricata and report heterochrony in the regression of hemipenes in this lizard. barixia

Evolutionary speciation in the alligator lizards of the genus Barisia. List of reptiles of Morelos, Mexico, and their distribution in relation to vegetation types.


Gerrhonotine lizards recently added to the American Museum collection, with further revisions of the genus Abronia. Catalogue of the lizards in the British Museum Natural History. Anfibios y Reptiles; pp. A review of the lizard genus Barisia. Mesoamerican Herpetology 2 1: A conservation reassessment of the reptiles of Mexico based on the EVS measure. Cotttae, Stuttgartiae, Monachii et Tubingiae, xxv-xxxvi pp.

Variation in the rare lizard Imbeicata rudicollis Wiegmann Anguidae with description of a new species from Central Mexico.

Barisia imbricata

Acta Zoologica Mexicana n. Etymology The generic name was derived from the Greek word barys, meaning “heavy,” apparently in reference to the robust body of B. Find more photos by Google images search: Check List 9 4: On a collection of batrachians and reptiles from Mount Orizaba, Bariisa, with descriptions of two new species.

Burg and David Chiszar Several neonates were sacrificed and processed to establish gonadal histology and the young of the remaining litters were maintained in captivity to observe the fate of the hemipenes in both sexes.