Monday, June 1, 2009

Family Dibamidae (Blind Lizards)

Order Squamata
Suborder Sauria
Infraorder Gekkota


Family Dibamidae (Blind Lizards)

About 9 species of one genus (Dibamus ) and the monotypic genus Anelytropsis form the dibamid family.

Appearance: small limbless lizards (males have small, flaplike hind limbs though, similar to those of pygopodids). They lack external ear openings and their vestigial eyes are covered by a scale. Members of both genera are usually uniformly brownish.The two genera share a large number of derived character states (Greer 1985, Miller 1966, Etheridge 1967, McDowell 1972).

Distribution: The two genera have a disjunct distribution with Anelytropsis occuring in Mexico and Dibamus sp. occuring in rain forests of southeast Asia, Indonesia, the Philippine Islands and western New Guinea.

Habitat: Burrowing in the soil or under rocks of dense forest, semi-arid deciduous brush or open shrubland, pine-oak forest (Anelytropsis); under stones or under rotting logs in rain forests (Dibamus).

Size: 25 cm (Anelytropsis), 22.5 cm (Dibamus) maximimum total length.

Food: unknown according to Greer 1985.

Behaviour: burrowing lifestyle

Reproduction: oviparous with clutch sizes of only one egg.

Related taxa: The relationships of the dibamids to other lizard families is ambiguous (Gasc 1968, Rieppel 1984, Greer 1985) although Greer expressed the opinion that they appear to be most closely related to amphisbaenians.

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