Mexichromis, Bertsch, 1977
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.6025891 |
persistent identifier |
https://treatment.plazi.org/id/03EB87A2-FFF6-FFA2-9790-FB73FB78F887 |
treatment provided by |
Plazi |
scientific name |
Mexichromis |
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( Figure 11 E–F View FIGURE 11 , 12 A–D View FIGURE12 )
Material examined. Seven specimens. MB28-004587, ZDRS, 21 Jun. 2012, 30m, 18mm; MHN-YT1223 3spcs., POD, 11 May 2014, 15m, 11–14mm; MB28-004850, 3 spcs., POD, 11 May 2914, 15m, 11–22mm.
Habitats. Subtropical rocky reefs.
Occurrences. Ponta do Ouro and Zavora.
Geographic distribution. Western Indian Ocean. South Africa ( Rudman 1999a) and Mozambique.
Remarks. Mexichromis sp. is externally similar to M. mariei ( Crosse, 1872) . Based on external morphology, Rudman (1999a) was unsure if this species was M. mariei or a different species because of inconsistencies in colour pattern between M. mariei from the Pacific and M. cf. mariei from the western Indian Ocean. Therefore, we examined the radula of one specimen and confirmed Rudman’s (1999a) belief that this species is different from M. mariei . While the radula formula for M. mariei is 55x 27.0.27 (+3) ( Rudman 1983), in the specimen examined it is 22x 15.0.15 (+3) ( Fig. 12 A View FIGURE12 ). Moreover, the very long lateral teeth clearly distinguish these species. The cusp of the lateral tooth is round and the number of denticles varies from two to four ( Fig. 12 B View FIGURE12 ). The innermost tooth has a wider base and four denticles on the outer side; these denticles gradually reduce in size from the cusp to the base ( Fig. 12 C–D View FIGURE12 ). In the inner side of the innermost teeth there are one or two denticles ( Fig. 12 C View FIGURE12 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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