Macrophthalmus (Tasmanoplax) Barnes, 1967

Barnes, R. S. K., 2010, A Review Of The Sentinel And Allied Crabs (Crustacea: Brachyura: Macrophthalmidae), With Particular Reference To The Genus Macrophthalmus, Raffles Bulletin of Zoology 58 (1), pp. 31-49 : 42

publication ID

https://doi.org/ 10.5281/zenodo.4508304

DOI

https://doi.org/10.5281/zenodo.4508919

persistent identifier

https://treatment.plazi.org/id/03C48786-FFBB-FFA0-5240-FC5EFB65F935

treatment provided by

Carolina

scientific name

Macrophthalmus (Tasmanoplax) Barnes, 1967
status

 

Macrophthalmus (Tasmanoplax) Barnes, 1967

( Fig. 5A View Fig )

Medium-sized, up to 30+ mm carapace breadth; ocular peduncles elongate but not projecting beyond lateral carapace margins, longer than breadth of front; front moderately narrow, not constricted between bases of ocular peduncles, where its breadth is ca. 20% distance between external orbital angles; ischium of external maxilliped ca.1.2 times length of merus; carapace with breadth 1.5–1.6 times length, with lateral margins subparallel, with large, broad-based, subrectangular anterolateral teeth, branchial regions with transverse and longitudinal rows of granules; central region of posterior border of epistome with large convexity; males without stridulatory apparatus; fingers of male chelae elongate with index downflexed and with clearly differentiated tooth on dactylus only. Intertidal in soft sediments.

This is a monotypic subgenus for M. latifrons Haswell, 1882 , restricted to south-eastern Australia, the only macrophthalmid in that region. It appears to differ behaviourly from other Macrophthalmus in that allocleaning (foraging on the carapace or walking legs of other conspecific individuals) is not displayed (Kitaura & Wada, 2004).

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