Editorial Type:
Article Category: Research Article
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Online Publication Date: 30 Nov 2022

Redescription of the Tadpoles of Gabohyla pauloalvini (Bokermann, 1973) and Sphaenorhynchus prasinus (Bokermann, 1973) (Hylidae: Sphaenorhynchini)

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Page Range: 422 – 433
DOI: 10.1670/21-086
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ABSTRACT

The Neotropical tribe Sphaenorhynchini includes 15 recognized species, 14 of which are allocated to the genus Sphaenorhynchus and 1 in the genus Gabohyla. Here, we redescribe the external larval morphology and include novel information on the lateral line system of G. pauloalvini and S. prasinus from the type localities. In addition, we include comments on the oviposition site and larval development of G. pauloalvini. The tadpoles of G. pauloalvini differentiate from all described larvae of Sphaenorhynchus by having a unique combination of stripes in the coloration: three lateral dark stripes (canthal, oblique, and ventrolateral) on the body and a single ventral dark stripe on the tail. The tadpoles of S. prasinus distinguish from those of G. pauloalvini and from all other larvae of Sphaenorhynchus by having a single, median, dark stripe on the tail musculature, among other characters. Tadpoles of G. pauloalvini and S. prasinus are nektonic and found swimming in the middle of the water column or in deeper regions of ponds. Adults of G. pauloalvini were observed sitting next to spawns, reinforcing the possibility of parental care in this species.

Copyright: Copyright 2022 Society for the Study of Amphibians and Reptiles 2022
Fig. 1.
Fig. 1.

Tadpole of Gabohyla pauloalvini in life (stage 34, lot MZUESC 22093). (A) lateral, (B) dorsal, and (C) ventral views of the body. Scale = 1 cm.

Fig. 2.
Fig. 2.

Morphological structures of Gabohyla pauloalvini (stage 37, lot MZUESC 22093). (A) Left nostril. (B) Spiracle. (C) Vent tube in lateral view. (D) Vent tube in ventral view. (E) Oral disc. Scales = 1 mm.

Fig. 3.
Fig. 3.

Lateral line system of Gabohyla pauloalvini (stage 38, lot MZUESC 22093). (A) Lateral and (B) dorsal views of the body. (C) Lateral view of the tail. Scales = 1 cm.

Fig. 4.
Fig. 4.

(A) Clutch of eggs of Gabohyla pauloalvini. (B) and (C) Adult individuals (sex not determined) sitting next to spawns. Photos A, C: M. Sena Nascimento.

Fig. 5.
Fig. 5.

Larval development of Gabohyla pauloalvini (lot MZUESC 22095). Gosner's stages in (A) 34, (B) 38, (C) 41, (D) 42, (E) 43, and (F) 44. (G) Adult male. Scales = 1 cm.

Fig. 6.
Fig. 6.

Tadpole of Sphaenorhynchus prasinus in life (stage 37, lot MZUESC 22094). (A) Lateral view, (B) dorsal, and (C) ventral views of the body. Scale = 1 cm.

Fig. 7.
Fig. 7.

Morphological structures of Sphaenorhynchus prasinus (stage 38, lot MZUESC 22094). (A) Left nostril. (B) Spiracle. (C) Vent tube in lateral view. (D) Vent tube in ventral view. (E) Oral disc. Scales = 1 mm.

Fig. 8.
Fig. 8.

Lateral line system of Sphaenorhynchus prasinus (stage 38, lot MZUESC 22094). (A) Lateral and (B) dorsal views of the body. (C) Lateral view of the tail. Scales = 1 cm.

Contributor Notes

4Corresponding author. E-mail: katy.vieira@gmail.com
Accepted: 23 Jun 2022
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