Aldisa cf. pikokai Bertsch & S. Johnson, 1982

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 : 43

Aldisa cf. pikokai Bertsch & S. Johnson, 1982

( Figure 13 G )

Material examined. Two specimens. MB28-004928, ZRP, 19 Aug. 2015, 0.5m, 7mm. MHN-YT1554, ZRP, 25 May 2016, 0.5m, 12mm.

Habitats. Subtropical tidal reefs.

Occurrences. Zavora.

Geographic distribution. Indo-west, central Pacific. Hawaii, Marshall Islands (Gosliner et al. 2008), British Indian Ocean Territory ( Yonow et al. 2002) and Mozambique .

Remarks. The specimens examined match the external morphological description of A. pikokai ( Bertsch & Johnson 1982) . Rudman (2005a) identified a species of Aldisa from South Africa as potentially A. pikokai , but mentioned that due to the geographic distance from the type locality (Hawaii) further anatomical studies and additional material from the Indo-Pacific were needed to be able to confirm such identification. Gosliner et al. (2008) refer to Rudman’s specimen as Aldisa sp. (p. 160, lower photo). This specimen has a cream-yellow depression, while the specimen found in Mozambique has a red depression as originally described for A. pikokai . However, we agree with Rudman (2005a) that due to the geographic distance, additional investigations are needed to confirm this identification.

Figures

FIGURE 13. A, Thorunna australis (MB28-004823). B, Thorunna horologia (MB28-005006). C, Thorunna punicea (MB28- 004404).D, Verconia norba (MB28-004715). E. Verconia simplex (MB28-005013). F, Verconia sp. (MB28-005012). G, Aldisa cf. pikokai (MHN-YT1554). H, Aldisa fragaria (MB28-004395). I, Aldisa zavorensis (MB28-004398). J–K, Asteronotus cespitosus (ZMBN105161), dorsal and ventral view. L, Asteronotus sp.(MB28-004911).