Designed by Paul Smith 2006. This website is copyrighted by law.
Material contained herewith may not be used without the prior written permission of FAUNA Paraguay.
Material on this page was provided by Paul Smith, Christoph Liedtke and Alberto Esquivel and are used with their permission.
DWARF TREE-FROG Dendropsophus nanus
A tiny, tree-frog barely larger than your thumb-nail. Despite their small size they are active all year round, usually perching fairly low in bushy vegetation overhanging water from where males call looking for a mate. Males can be identified by their conspicuous yellow throat. This species is frequently confused with the similar and even smaller Dendropsophus sanborni, to the point where they were once considered conspecific. Note however the clear structural differences in head shape and the different call.
Click on the images to enlarge them.
FIGURE 1a - (FPANF316PH) Adult yellow, PROCOSARA, PN San Rafael (Paul Smith March 2007).
FIGURE 1b - (FPANF317PH) Same individual upperside (Paul Smith March 2007).
FIGURE 1c - (FPANF318PH) Same individual flash colours (Paul Smith March 2007).
FIGURE 1d - (FPANF319PH) Adult male ventral, PROCOSARA, PN San Rafael (Christoph Liedtke November 2008).
FIGURE 1e - (FPANF587PH) Adult lateral, PROCOSARA, PN San Rafael (Paul Smith December 2012).
FIGURE 1f - (FPANF588PH) Same individual as (FPANF587PH) frontal (Paul Smith December 2012).
FIGURE 1g - (FPANF589PH) Same individual as (FPANF587PH) dorsal (Paul Smith December 2012).
FIGURE 1h - (FPANF590PH) Comparative lateral shot D.nanus (left) and D.sanborni (right) PROCOSARA, PN San Rafael (Paul Smith December 2012).
FIGURE 1i - (FPANF591PH) Comparative dorsal shot D.nanus (left) and D.sanborni (right) PROCOSARA, PN San Rafael (Paul Smith December 2012).
VIDEO A - (FPANF325VI) Adult with other singing in background, PROCOSARA, PN San Rafael (Paul Smith November 2007).
VIDEO B - (FPANF326VI) Adult singing, Estancia Laguna Blanca, Departamento San Pedro (Paul Smith February 2010).
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FIGURE 1a
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FIGURE 1b
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FIGURE 1c
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FIGURE 1d
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FIGURE 1e
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FIGURE 1f
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FIGURE 1g
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FIGURE 1h
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FIGURE 1i
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Gallery 2: Colour variation in adult Dendropsophus nanus
Like many Anurans skin colouration of this species is highly variable. Above are some examples of photochromatism found in this species.
FIGURE 2a - (FPANF320PH) Brown adult, PROCOSARA, PN San Rafael (Alberto Esquivel undated).
FIGURE 2b - (FPANF321PH) Pale brown adult, PROCOSARA, PN San Rafael (Christoph Liedtke November 2008).
FIGURE 2c - (FPANF322PH) Orange adult, PROCOSARA, PN San Rafael (Paul Smith November 2007).
FIGURE 2d - (FPANF323PH) Dark orange adult, Estancia Laguna Blanca, Departamento San Pedro (Paul Smith February 2010).
FIGURE 2e - (FPANF324PH) Same individual dorsal (Paul Smith February 2010).
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FIGURE 2a
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FIGURE 2b
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FIGURE 2c
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FIGURE 2d
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FIGURE 2e
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