Mexichromis macropus is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.MolluscaBase (2018). Mexichromis macropus Rudman, 1983. Accessed on 2019-01-22.
Distribution This species is recorded from temperate and subtropical Australia including SW Western Australia, South Australia, Tasmania, Victoria, New South Wales and southern Queensland.Rudman, W.B., 1999 (January 16) Mexichromis macropus Rudman, 1983. [In] Sea Slug Forum. Australian Museum, Sydney.
Description Mexichromis macropus has a mantle border decorated with radially arranged orange or yellow-orange stripes rather than spots, as in Mexichromis katalexis or continuous lines as in Mexichromis mariei. The mantle ranges in colour from white to pink-purple and has scattered pointed papillae tipped in purple.
Ecology This species feeds on a sponge in the genus Dysidea.
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