Bosc's fringe-toed lizard

Bosc's fringe-toed lizard or Bosk's [sic] fringe-fingered lizard (Acanthodactylus boskianus) is a species of lizard in the family Lacertidae.[1][2] The species is endemic to North Africa and Western Asia.[1] Three subspecies are sometimes recognised; A. boskianus boskianus, from Lower Egypt; A. boskianus euphraticus from Iraq; and A. boskianus asper from the rest of the range; however this division is unsatisfactory because each subspecies has much variation and the differences between them are not consistent.[3]

Bosc's fringe-toed lizard
Dana Biosphere Reserve, Jordan
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Family: Lacertidae
Genus: Acanthodactylus
Species:
A. boskianus
Binomial name
Acanthodactylus boskianus
(Daudin, 1802)
Synonyms[1]
  • Lacerta boskiana
    Daudin, 1802
  • Lacerta aspera
    Audouin, 1829
  • Scapteira inaequalis
    Gray, 1838
  • Acanthodactylus boskianus
    — A.M.C. Duméril & Bibron, 1839
A male in the United Arab Emirates

Description

A. boskianus is a medium-sized lizard with a snout-to-vent length (SVL) of between 5 and 8 cm (2.0 and 3.1 in).[1] Males are usually larger than females. The feet have long slender digits which are fringed. The dorsal surface is olive-grey with five longitudinal dark stripes, the middle one of which subdivides at the neck. The ventral surface is whitish, but in the female, the underside of the tail becomes suffused with red during the breeding season. In juveniles, the tail is blue.[3]

Distribution and habitat

A. boskianus is found in Algeria, Egypt, Eritrea, Ethiopia, Iran, Iraq, Israel, Jordan, Kuwait, Libya, Mali, Mauritania, Niger, Nigeria, Oman, Saudi Arabia, Sudan, Syria, southern Turkey, Tunisia, and the United Arab Emirates.[1] It is one of the most common diurnal lizards over much of its range, and is found in a diversity of habitats, including coastal plains and cultivated areas, saltmarshes, oases and wadis, usually in areas with a light to moderate vegetation cover on sandy or gravelly substrates.[3]

Behavior

Bosc's fringe-toed lizard is a fast-moving lizard[2] and a very active forager. Males are territorial and larger males, with larger head sizes are more successful than smaller males. Size is important in females as well, with an average clutch size of four oviductal eggs, and a range of two to seven, the number of eggs being carried being largely dependent on abdominal capacity.[4] Certain chemicals present in the skin and in the exudate from the femoral glands may play a role in chemical communication, sex recognition and courtship behaviour.[5] A. boskianus is oviparous.[1]

  • Love bite as part of courtship in A. boskianus
  • Juvenile A. boskianus eating an insect

Etymology

Both the specific name, boskianus, and the common name, Bosc's fringe-toed lizard, are in honor of French naturalist Louis Augustin Guillaume Bosc.[6]

gollark: Wait, I have an even BETTER idea: HYPERGRAPHS.
gollark: It's not based because you can't marry unilaterally.
gollark: Who says *I* meant it ironically?
gollark: What if marriage, but with arbitrary targets and forming an arbitrary digraph, and also it's transferable?
gollark: What's the going rate of marriages on the marriage market these days?

References
  1. Species Acanthodactylus boskianus at The Reptile Database . www.reptile-database.org.
  2. Whitfield, Philip (editor) (1984). Longman Illustrated Animal Encyclopedia. London: Longman. ISBN 978-0582556911. (Bosc's fringe-toed lizard, p. 434).
  3. Baha el Din, Sherif (2006). A Guide to the Reptiles and Amphibians of Egypt. Oxford University Press. pp. 149–152. ISBN 978-977-424-979-2.
  4. Seifan, M.; Gilad, A.; Klass, K. & Werner, Y.L. (2009). "Ontogenetically stable dimorphism in a lacertid lizard (Acanthodactylus boskianus) with tests of methodology and comments on life-history". Biological Journal of the Linnean Society. 97 (2): 275–288. doi:10.1111/j.1095-8312.2009.01200.x.
  5. Khannoon, Eraqi R.; Mohammed, Kamar K.H. & Dakrory, Ahmed I. (2016). "Skin-derived semiochemicals of the lacertid lizard Acanthodactylus boskianus". Amphibia-Reptilia. 37 (4): 427–436. doi:10.1163/15685381-00003074.
  6. 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. (Acanthodactylus boskianus, p. 33).

Further reading
  • Boulenger GA (1887). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume III. Lacertidæ ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xii + 575 pp. + Plates I-XL. (Acanthodactylus boskianus, pp. 59–60).
  • Daudin FM (1802). Histoire Naturelle, générale et particulière des reptiles; Ouvrage faisant suite à l'Histoire Naturelle générale et particulière, composée par Leclerc de Buffon, et rédigée par C.S. Sonnini, membre de plusiers Sociétés savantes. Tome troisième [Volume 3]. Paris: F. Dufart. 452 pp. (Lacerta boskiana, new species, pp. 188–190). (in French and Latin).
  • Salvador A (1982). "A revision of the lizards of the genus Acanthodactylus (Sauria: Lacertidae)". Bonner Zoologische Monographien (16): 1-167. (Acanthodactylus boskianus, pp. 23–37, Figures 4-6, Maps 2-5, Tables 1-5). (in English, with an abstract ig German).
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