Hypselodoris bullockii ( Collingwood, 1881 )

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 : 32

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.6025857

persistent identifier

https://treatment.plazi.org/id/03EB87A2-FFCF-FFA4-9790-FE56FDFEFE48

treatment provided by

Plazi

scientific name

Hypselodoris bullockii ( Collingwood, 1881 )
status

 

Hypselodoris bullockii ( Collingwood, 1881) View in CoL

( Figures 7 H View FIGURE 7 , 9 A–D View FIGURE 9 )

Material examined. Six specimens. MB28-004828, 5 spcs., POA, 0 8 May 2014, 40m, 34mm; MHN-YT1671, NSS, 16 Feb. 2017, 25m, 49mm.

Habitats. Subtropical tidal reefs and tropical coral reefs.

Occurrences. Ponta do Ouro.

Geographic distribution. Indo-west, central Pacific. Marshall Islands, Japan, New Caledonia (Gosliner et al. 2008), Australia ( Debelius 1996; Gosliner et al. 2008), Taiwan, Indonesia, the Philippines (Gosliner et al. 2008), Thailand ( Mehrotra & Scott 2015), Christmas Island, Indonesia, Maldives ( Debelius 1996) and Mozambique ( King & Fraser 2014).

Remarks. Published details of the morphology of H. bullockii are relatively poor and in need of further study ( Gosliner & Johnson 1999). Gosliner et al. (2015) consider H. bullockii to be restricted to the Pacific Ocean and note that records from the Indian Ocean refer to Thorunna punicea ( Rudman, 1995) . Thus, to confirm the generic placement of our material, we examined the radula of one specimen (MB28-004828, Fig. 9 View FIGURE 9 ). Despite some external similarities between Thorunna and Hypselodoris , the radular teeth of these two genera are distinctive ( Rudman 1990). The radula formula of the examined specimen was 57x 47.0.47 ( Fig. 9 A View FIGURE 9 ). Central teeth are absent ( Fig. 9 B View FIGURE 9 ), the innermost teeth bear two to three pointed denticles of different size on the inner and four on the outer sides ( Fig. 9 C View FIGURE 9 ). The median lateral teeth bear 3-5 denticles including one that is bicuspid ( Fig. 9 D View FIGURE 9 ). This confirms that this species belongs to the genus Hypselodoris . Nevertheless, additional studies are needed to verify the intraspecific variability of this species.

NSS

University of Liverpool Botanic Gardens

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