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

Halgerda sp. 4

( Figure 17 B )

Material examined. Six specimens. MB28-004459, ZWH, 0 5 Feb. 2012, 17m, 25mm, collected by L. Robisson; MB28-004527, ZGWS, 23 Mar. 2012, 22m, 25mm; MHN-YT567, ZA51, 23 Aug. 2012, 12m, 24mm; MB28- 0 0 4698, ZGWS, 26 Jul. 213, 18m, 29mm; MB28-004716, ZT, 11 Aug. 2013, 33m, 20mm; MB28-0 0 4802, ZY, 0 4 Feb. 2014, 33m, 24mm.

Habitats. Subtropical rocky reefs.

Occuurences: Zavora.

Geographic distribution. Western Indian Ocean. Mozambique .

Remarks. This species resemble H. toliara but differs externally by the lack of secondary lines between the ridges and small tubercles surround the mantle.

Figures

FIGURE17. A, Halgerda sp.3 (MB28-005031).B, Halgerda sp.4 (MB28-004527).C, Halgerda sp. 5(MB28-004933).D–E, Sebadoris nubilosa (MHN-YT1377). F, Taringa caudata (MB28-005045). G–H, Tayuva lilacina (MB28-004964), dorsal and ventral view.I, Tayuva lilacina (MHN-YT1278b).J, Thordisacf.sanguinea (MB28-004806).K, Thordisa sp. (MB28-004473). L, Atagema echinata (MB28-004879).