Cophixalus linnaeus Kraus & Allison, 2009
|Species Description: Kraus F, Allison A 2009 New species of Cophixalus (Anura: Microhylidae) from Papua New Guinea. Zootaxa 2128: 1-38.|
Diagnosis: Small body size (males 13.4-14.7 mm SVL, females 14.9-15.3 mm SVL); finger discs and toe discs both about 1.5x width of the penultimate phalanx (but see note in Comments section); first finger well-developed and bearing disc with circum-marginal groove; short narrow head with small eyes and moderately long snout; face not uniformly black; dark subocular blotch; dorsum and flanks brown with irregular darker markings; indistinct dark X marking on suprascapular region; abdomen paler than chin or throat; no black lateral band; no dark dorsolateral bar posterior to forearm insertion; very short call note of .067 s (Kraus and Allison 2009).
Description: Adult males measure 13.4-14.7 mm SVL. Adult females measure 14.9-15.3 mm SVL. Small narrow head with small eyes. Long snout, rounded and slightly projecting in lateral view, truncate in dorsal view, with gently rounded canthus rostralis, steep loreal region and nostrils much closer to the tip of the snout than the eyes. Tympanum small, with raised annulus. No supratympanic fold. Unwebbed fingers with average size finger discs and terminal grooves. Normal size first finger has a disc with a circum-marginal groove. Finger discs are 1.5x the width of the penultimate phalanx, except for that of Finger I, which is only slightly wider than the penultimate phalanx. Fingers do not bear obvious subarticular tubercles. Weakly developed metacarpal tubercles; inner metacarpal tubercle elongated and narrow while outer metacarpal tubercle is rounded. Hind legs are moderately long, with TL/SV = 0.51. Toes are unwebbed and have discs with circum-marginal grooves; toe discs are 1.5x the width of the penultimate phalanx (see Note in Comments section). Toes do not bear obvious subarticular tubercles. Inner metatarsal tubercle is narrow and elongated, while the outer metatarsal tubercle is absent. Dorsal skin is weakly pustulate. Smooth lateral surfaces and smooth ventral surfaces, except abdomen is somewhat granular. (Kraus and Allison 2009).
Light to medium brown on dorsum and sides, with irregular scattered darker marks. Dark subocular blotch on face, but not uniformly black. Ocelli may be present in the lumbar region, but are usually obscure. Unique indistinct dark X mark usually present on the suprascapular region. Lighter abdomen than chin and throat. Iris black with extensive silver flecking, or bronze-copper. A light vertebral stripe may be present. Light heel patches may be present. A pair of light pectoral spots may be present (Kraus and Allison 2009).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Papua New Guinea
Life History, Abundance, Activity, and Special Behaviors
However, in the description of the holotype, it reads "toe discs slightly smaller than those of fingers (3rdF/4thT = 1.05)" (Kraus and Allison 2009).
Kraus, F., and Allison, A. (2009). ''New species of Cophixalus (Anura: Microhylidae) from Papua New Guinea.'' Zootaxa, 2128, 1-38.
Originally submitted by: Stephanie Ung (first posted 2009-09-21)
Edited by: Kellie Whittaker (2010-04-21)
Species Account Citation: AmphibiaWeb 2010 Cophixalus linnaeus <https://amphibiaweb.org/species/7344> University of California, Berkeley, CA, USA. Accessed Jun 6, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 6 Jun 2023.
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