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Oedodera marmorata BAUER, JACKMAN, SADLIER & WHITHAKER, 2006

IUCN Red List - Oedodera marmorata - Critically Endangered, CR

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Higher TaxaDiplodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymOedodera marmorata BAUER, JACKMAN, SADLIER & WHITHAKER 2006
Oedodera marmorata — SKIPWITH et al. 2016 
DistributionNW New Caledonia

Type locality: Creek à Paul, Sommet Noir, Paagoumène, 11 km NW Koumac, Province Nord, New Caledonia, 20°29’ 21.1’’ S, 164° 11’ 49.5’’ E, elevation 20 m.  
TypesHolotype: MNHN-RA 2004.0015 (formerly AMS R161256), collected by A. H. Whitaker and V. A. Whitaker, 19 October 2001. Paratypes: AMS R 161257, 161259, CAS 230934, same data as holotype; AMS R 161263, Ruisseau des Gaïacs, Paagoumène, 6 km NW Koumac, Province Nord, New Caledonia, 20° 31’ 16.2’’ S, 164° 14’ 40.6’’ E, 30 m, etc. 
DiagnosisDiagnosis (genus). Oedodera may be distinguished from all other New Caledonian diplodactylid genera by the following combination of character states: body size small (to 61 mm SVL); head large, neck distinctly swollen, nearly as wide as the widest part of head; tail to 93% of SVL; dorsal scalation granular, homogeneous; body without extensive skin webs or flaps; expanded, undivided subdigital lamellae under all toes; reduced claw of digit I of manus and pes situated between an asymmetrical pair of apical scansors; digit I of pes only with a small rounded scale on medial side in gap between subdigital lamellae and apical scansors; medial apical scansor present on digit II of one or more feet (condition variable); precloacal pores in two or three short rows (fewer than 20 pores in total) not extending onto thighs, females with precloacal slits or pits without secretory material; dorsal pattern of marbled or reticulated brown; venter distinctly yellowish (BAUER et al. 2012).

Diagnosis: Oedodera marmorata is a moderately sized (to 61 mm SVL), robust-bodied diplodactylid. It may be distinguished from all other New Caledonian diplodactylid geckos by its swollen neck (Figure 1), presence of precloacal pits in females, and apical scansors on digit II (variable; Figure 2). It may further be differentiated from Eurydactylodes by its depressed (versus compressed) body and the absence of enlarged head scales and a caudal chemical defensive system. It differs from all Rhacodactylus by its smaller size (maximum 61 mm SVL versus 125þ mm SVL), absence of lateral and tail base skin folds, and absence of extensive digital webbing. It differs from Bavayia and a newly erected genus (A.M.B., T.J., and R.A.S., unpubl. data) in its undivided subdigital scansors (versus distal scansors divided), and marbled dorsal pattern (versus transverse chevrons or blotches, longitudinal stripes, or patternless). Precloacal pores of adult male O. marmorata are arranged in two rows or in a patch consisting of three rows of pores. Among currently recognized taxa, this distinguishes it from B. sauvagii (Boulenger); B. exsuccida Bauer, Whitaker & Sadlier; B. pulchella Bauer, Whitaker & Sadlier; B. septuiclavis Sadlier; B. geitaina Wright, Bauer & Sadlier; and B. ornata Roux, all of which possess only a single row of pores. The presence of a medial apical scansor on digit II is unique among diplodactylids. Although this feature is variable among O. marmorata (absent in 54% of all specimens examined; see Variation following Description), if present it is sufficient by itself to diagnose a particular specimen. 
CommentType species: Oedodera marmorata BAUER, JACKMAN, SADLIER & WHITHAKER 2006 is the type species of the genus Oedodera BAUER, JACKMAN, SADLIER & WHITHAKER 2006.

Diplodactylidae fide BAUER (pers. comm. 18 Feb 2011). 
EtymologyEtymology: The generic name is derived from the Latinized version of the Greek roots oidema (a swelling) and dere (neck) and refers to the characteristic swollen appearance of the neck in all specimens of this genus. The name is feminine.

Etymology: The species is named after the Latin “marmorata” for ‘‘marbled’’ and refers to the dorsal patterning of the species. It is feminine matching the generic name in gender. 
  • Barts, M. 2006. Verbeulte Geckos und geschwätzige Skinke - neue Echsen aus Neukaledonien. Terraria 1 (1): 28-29
  • Bauer, Aaron M.; Jackman, Todd; Sadlier, R.A.; Whitaker, A.H. 2006. A new genus and species of Diplodactylid gecko (Reptilia: Squamata: Diplodactylidae) from northwestern New Caledonia. Pacific Science 60 (1): 125-136 - get paper here
  • BAUER, AARON M.; TODD R. JACKMAN, ROSS A. SADLIER & ANTHONY H. WHITAKER 2012. Revision of the giant geckos of New Caledonia (Reptilia: Diplodactylidae: Rhacodactylus). Zootaxa 3404: 1–52 - get paper here
  • Langner, Christian & Patrick Schönecker 2018. Pacific Lost World – die weniger bekannte, gefährdete Geckofauna Neukaledoniens. Terraria-Elaphe 2018 (1): 14-26 [2017] - get paper here
  • SCHÖNECKER, Patrick & Christian LANGNER 2012. Neue Namen und alte Bekannte – Gattungsrevision der Neukaledonischen Riesengeckos (Rhacodactylus) und weiterer Geckogattungen Neukaledoniens. Terraria-Elaphe 2012 (6): 58-65 - get paper here
  • Skipwith, Phillip L.; Aaron M. Bauer, Todd R. Jackman and Ross A. Sadlier 2016. Old but not ancient: coalescent species tree of New Caledonian geckos reveals recent post-inundation diversification. Journal of Biogeography, DOI: 10.1111/jbi.12719 - get paper here
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