Holbrookia maculata

Lesser earless lizard
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Iguania
Family:	Phrynosomatidae
Genus:	Holbrookia
Species:	H. maculata
Binomial name
Holbrookia maculata Girard, 1851

Holbrookia maculata, commonly known as the lesser earless lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the southwestern and central United States and northern Mexico. There are eight recognized subspecies.

Taxonomy

Subspecies

The following eight subspecies of Holbrookia maculata are recognized as being valid, including the nominotypical subspecies.^[2]

• H. m. bunkeri H.M. Smith, 1935 – Bunker's earless lizard
• H. m. campi Schmidt, 1921
• H. m. dickersonae Schmidt, 1921 – Dickerson's earless lizard
• H. m. flavilenta Cope, 1883
• H. m. maculata Girard, 1851 – northern earless lizard
• H. m. perspicua Axtell, 1956 – eastern earless lizard, prairie eastern lizard
• H. m. pulchra K.P. Schmidt, 1921 – Huachuca earless lizard
• H. m. ruthveni H.M. Smith, 1943 – bleached earless lizard (an ecotonal subspecies from New Mexico's White Sands)

Subspecies etymology

The subspecific name, bunkeri, is in honor of American zoologist Charles Dean Bunker (1870–1948).^[3]

The subspecific name, campi, is in honor of American paleontologist Charles Lewis Camp.^[2]

The subspecific name, dickersonae, is in honor of American herpetologist Mary Cynthia Dickerson.^[3]

The subspecific name, ruthveni, is in honor of American herpetologist Alexander Grant Ruthven.^[3]

Description

H. maculata is a small species of lizard. Adults have a total length (including tail) of 4–5 in (10–13 cm). The dorsal scales are granular and smooth. There are no external ear openings. There are two folds across the throat. The throat of the female is orange during the breeding season. The underside of the tail has no dark spots.^[4]

Distribution and habitat

H. maculata is found in the U.S. states of Arizona, Colorado, Kansas, Oklahoma, Nebraska, New Mexico, South Dakota, Texas, Utah, and Wyoming, as well as in the Mexican states of Chihuahua, Coahuila, Durango, Guanajuato, Jalisco, Nuevo León, San Luis Potosí, Sinaloa, Sonora, and Zacatecas.^[1][2]

The preferred natural habitats of H. maculata are shrubland, grassland, and desert.^[1]

Behaviour and ecology

H. maculata is oviparous.^[1][2] It preys upon insects and spiders.^[4]

References

1. Hammerson GA, Lavin P, Vazquez Díaz J, Quintero Díaz G, Gadsden H (2007). "Holbrookia maculata". The IUCN Red List of Threatened Species 2007: https://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T64065A12733624.en. Accessed on 16 August 2022.
2. Species Holbrookia maculata at The Reptile Database www.reptile-database.org.
3. Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Holbrookia maculata bunkeri, p. 42; H. m. dickersonae, p. 72; H. m. ruthveni, p. 230).
4. Behler JL, King FW (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Alfred A. Knopf. 743 pp., 657 color plates. ISBN 0-394-50824-6. (Holbrookia maculata, pp. 510–511 + Plates 346, 366, 370).

External links

• Bleached Earless Lizard

Further reading

• Boulenger GA (1885). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume II. Iguanidæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiii + 497 pp. + Plates I-XXIV. (Holbrookia maculata, p. 209).
• Conant R (1975). A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition. Boston: Houghton Mifflin. xviii + 429 pp. + Plates 1-48. ISBN 0-395-19977-8 (paperback), ISBN 0-395-19979-4 (hardcover). (Holbrookia maculata, pp. 96–97 + Plate 14 + Map 58).
• Girard CF (1851). "On a New American Saurian Reptile". Proceedings of the American Association for the Advancement of Science 4: 200–202. (Holbrookia maculata, new species).
• Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3 (paperback), ISBN 0-307-47009-1 (hardcover). (Holbrookia maculata, pp. 128–129).
• Stebbins RC (2003). A Field Guide to Western Reptiles and Amphibians, Third Edition. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin. xiii + 533 pp. ISBN 978-0-395-98272-3. (Holbrookia maculata, p. 278 + Plate 28 on p. 90 + Map 80 on p. 484).