Halgerda, Bergh, 1880

Tibiriçá, Yara, Pola, Marta & Cervera, Juan Lucas, 2017, Astonishing diversity revealed: an annotated and illustrated inventory of Nudipleura (Gastropoda: Heterobranchia) from Mozambique, Zootaxa 4359 (1), pp. 1-133 : 50

publication ID	https://doi.org/10.11646/zootaxa.4359.1.1
publication LSID	lsid:zoobank.org:pub:8D06174D-B19F-4B5C-B9B0-DA74E6D43C75
DOI	https://doi.org/10.5281/zenodo.6025950
persistent identifier	https://treatment.plazi.org/id/03EB87A2-FFE1-FFB5-9790-FD83FC62FBCF
treatment provided by	Plazi (2017-12-01 10:00:15, last updated 2024-11-28 18:37:34)
scientific name	Halgerda
status

Treatment

Halgerda View in CoL sp. 2

( Figure 16 L View FIGURE 16 )

Material examined. Eight specimens. MB28-004417, ZRP, 0 5 May 2011, 1 m, 15mm (preserved); MB28-004565, ZRP, 0 7 Jun. 2012, 2m, 9mm; MB28-0 0 4679, ZRP, 25 May 2013, 1 m, 20mm; MB28-004731, ZRP, 22 Aug. 2013, 2m, 27mm; MHN-YT903, ZRP, 0 7 Sep. 2013, 0.5m, 30mm; MB28-004807, ZRP, 17 Mar. 2014, 0.5m, 42mm; MB28-004901, NKA, 10 Jun. 2014, 18m, 27mm; ZMBN94225, PAE, 2 Feb. 2014, 20– 25m, 20mm.

Habitats. Subtropical tidal reefs, rocky reefs and topical coral reefs.

Occurrences. Ponta do Ouro , Zavora, Paindane, Nacala, Nuarro and Pemba.

Geographic distribution. Indian Ocean. British Indian Ocean Territory, Maldives ( Yonow et al. 2002), Kenya ( Rudman 1978), Madagascar (Eliot 1905), Tanzania (Gosliner et al. 2008) and Mozambique (Gosliner et al. 2008; King and Fraser 2014).

Remarks. This species has been thought to be an Indian Ocean variation of Halgerda tessellata ( Bergh, 1880) . However, it differs genetically and anatomically. The principle of the external difference is the absence of the submarginal band formed by white spots present in the Pacific specimens.

References

Bergh, L. S. R. (1880) On Nudibranchiate Gastropod Mollusca of North Pacific Ocean with special references to those of Alaska. Second part. Scientific Results of the Exploration of Alaska by the parties under the charge of W. D. Dall, during the years 1865 - 1874, 1, 189 - 276.

King, D. & Fraser, V. (2014) The Reef Guide. Fishes, corals, nudibranchs & other invertebrates. East & South Coasts of Southern Africa. Struik Nature, Cape Town, 360 pp.

Rudman, W. B. (1978) The dorid opisthobranch genera Halgerda Bergh and Sclerodoris Eliot from the Indo-West. Zoological Journal of the Linnean Society, 62, 59 - 88. https: // doi. org / 10.1111 / j. 1096 - 3642.1978. tb 00523. x

Yonow, N., Anderson, R. C. & Buttress, S. G. (2002) Opisthobranch molluscs from the British Indian Ocean Territory, Central Indian Ocean. Journal of Natural History, 36, 831 - 882. https: // doi. org / 10.1080 / 00222930110039161

Figures

FIGURE 16. A, Carminodoris bifurcata (MB28-004766). B–C, Discodoris coerulescens (ZMBN105166), dorsal and ventral view. D, Halgerda cf. bacalusia (MB28-004874). E, Halgerda dalanghita (MB28-004815). F, Halgera toliara (MB28- 004783). G–I, Halgerda wasiniensis (MB28-004440, MB28-004779 and MB28-004918, respectively). J. Halgerda cf. wasinensis (MB28-005077). K, Halgerda sp. 1 (MB28-004721).L, Halgerda sp. 2 (MB28-004901).