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A New Rhacophorid Treefrog from Taiwan, with Comparisons to Chirixalus eiffingeri (Anura, Rhacophoridae)

Mitsuru Kuramoto and Chin-Shiang Wang
Copeia
Vol. 1987, No. 4 (Dec. 9, 1987), pp. 931-942
DOI: 10.2307/1445556
Stable URL: http://www.jstor.org/stable/1445556
Page Count: 12
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A New Rhacophorid Treefrog from Taiwan, with Comparisons to Chirixalus eiffingeri (Anura, Rhacophoridae)
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Abstract

A new treefrog, Chirixalus idiootocus, is described from Taiwan. It is closely related to C. eiffingeri but distinct in its smaller size, poorly developed pollex, and lack of white spinules on the back. Differing from all the other Taiwan frogs, it lays eggs directly on land near the edge of water without forming a foam nest. Hatching is apparently stimulated by rain, and tadpoles spend a typical aquatic larval life in ponds or rain pools. Most predominant calls are composed of a series of pulses, which seemed to play some roles in vocal interactions between males in breeding aggregations. The karyotype consists of 2n = 26 chromosomes with five large and eight small pairs. These characters of C. idiootocus are compared with those of a close relative, C. eiffingeri. Generic allocation of C. idiootocus and C. eiffingeri is discussed in relation to their breeding habits.

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