Hyperolius igbettensis SchiØtz, 1963

Segniagbeto, Gabriel Hoinsoudé, Ohler, Annemarie, Rödel, Mark-Oliver, Luiselli, Luca & Dubois, Alain, 2024, Amphibians of Togo: taxonomy, distribution and conservation status, Zoosystema 46 (25), pp. 631-670 : 646

publication ID	https://doi.org/10.5252/zoosystema2024v46a25
publication LSID	lsid:zoobank.org:pub:D4AC1F89-AC34-43C4-9761-3F2015A02265
DOI	https://doi.org/10.5281/zenodo.13942757
persistent identifier	https://treatment.plazi.org/id/03F187A4-FFA5-FFF3-A9D8-FF6AFA44FAB0
treatment provided by	Plazi (2024-10-09 08:41:37, last updated 2024-11-26 01:37:28)
scientific name	Hyperolius igbettensis SchiØtz, 1963
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Hyperolius igbettensis SchiØtz, 1963 View in CoL

( Fig. 6D View FIG )

MATERIAL EXAMINED. — Togo • 10 ♂; Kpeisolongo (close to Fazao Malfakassa National Park); Coll. GHS-W 2052-2056 .

ADDITIONAL MATERIAL. — Côte d’Ivoire • 4 ♂, 8 ♀; Lamto ; MNHN-RA-2000.4077-4079, MNHN-RA-2000.4096, MNHN-RA-2000.4099, MNHN-RA-1996.8881, MNHN-RA-2000.4074, MNHN-RA-2000.4075, MNHN-RA-2000.4092, MNHN-RA-2000.4093, MNHN-RA-2000.4095, MNHN-RA-2000.4097 • 1 ♂, 1 ♀; Tchan Tabou ; MNHN-RA-2000.5346, MNHN-RA-1997.9583 .

DESCRIPTION. — Small (SVL 16.2-21.7 mm ♂, 21.1-23.7 mm ♀) and slender frog, with pointed snout. Head small, slightly longer than wide (HW 24-33% SVL; HL 31-38% SVL).Tympanum barely distinct, covered by skin (TYD 7-11% SVL). Hind leg moderately long (TL 40-58% SVL). Webbing rather large, leaving up to two phalanges free; webbing formula: I 1 – 1 ¼ II ½ – 2 III 1 – 2 IV 1 ½ – ½ V. Fingers and toes with terminal discs. Skin uniformly smooth on the back and flanks, slightly granular on the belly.

COLOURATION. — The dorsal colouration is green with white dorsolateral bands from tip of snout to groin. The canthus rostralis and upper eyelid are brown. The ventral body is white.

SEXUAL DIMORPHISM. — Males have a yellow gland on the subgular vocal sac. Nuptial spines are not distinct, prepollex not distinctly thickened.

HABITATS AND DISTRIBUTION. — The species is widely distributed in the Guinean savannah areas of West Africa. Rödel & Agyei (2003) and Leaché et al. (2006) reported its presence in the forest area between Togo and Ghana. Specimens have been studied by Bourgat (1979) in his work on the trematodes of Togo. During our survey, this species was collected in Kpei Solongo (Fazao Malfakassa National Park). Populations of this species have been observed along Mono River in ecological zone III.

TAXONOMY NOTE. — Older publications ( Channing et al. 2002; Amiet 2005) discussed the taxonomy of these frogs, and regarded them as part of Hyperolius nasutus Günther, 1865 , with a wide range in western, central and southern Africa. Channing et al. (2013) revised the group and validated the name originally proposed by SchiØtz (1963) and limited the distribution of this species to West Africa.

References

AMIET J. - L. 2005. - Les Hyperolius camerounais du groupe d' H. nasutus (Amphibia, Anura, Hyperoliidae). Revue suisse de Zoologie 112: 271 - 310. https: // doi. org / 10.5962 / bhl. part. 80299

BOURGAT R. 1979. - Trematodes d'amphibiens du Togo. Bulletin du Museum national d'Histoire naturelle (4 e serie) 3: 597 - 624.

CHANNING A., MOYER D. & BURGER M. 2002. - Cryptic species of sharp-nosed reed frogs in the Hyperolius nasutus complex: advertisement call differences. African Zoology 37 (1): 91 - 99. https: // doi. org / 10.1080 / 15627020.2002.11657159

CHANNING A., HILLERS A., LOTTERS S., RODEL M. - O., SCHICK S., CONRADIE W., RODER D., MERCURIO V., WAGNER P., DEHLING J. M., DU PREEZ L. H., KIELGAST J. & BURGER M. 2013. - Taxonomy of the super-cryptic Hyperolius nasutus group of long reed frogs of Africa (Anura: Hyperoliidae), with descriptions of six new species. Zootaxa 3620 (3): 301 - 350. https: // doi. org / 10.11646 / zootaxa. 3620.3.1

LEACHE A. D., RODEL M. - O., LINKEM C. W., DIAZ R. E., HILLERS A. & FUJITA M. K. 2006. - Biodiversity in a forest island: reptiles and amphibians of the West African Togo hills. Amphibian & Reptile Conservation 4: 22 - 45. https: // www. biodiversitylibrary. org / page / 51145036

RODEL M. - O. & AGYEI A. C. 2003. - Amphibians of the Togo- Volta highlands, eastern Ghana. Salamandra 39: 207 - 234.

SCHIOTZ A. 1963. - The amphibians of Nigeria. Videnskabelige meddelelser fra den Naturhistoriske forening i Kjobenhavn 125: 1 - 92.

Figures

FIG. 6. — Representatives of anuran species from Togo in life: A, B, Hyperolius concolor (Hallowell, 1844) males (Kalaré); C, Hyperolius fusciventris burtoni (Boulenger, 1883) female (Togblekope); D, Hyperolius igbettensis Schiøtz, 1963 (Kpeisolongo).