Tuesday, July 18, 2017

[Crustacea • 2017] Homolidae from the South China Sea, with Descriptions of Two New Species of Homologenus A. Milne-Edwards, in Henderson, 1888, and the Identities of Homologenus malayensis and Lamoha superciliosa


Fig. 24.   Homolidae from the  South China Sea. Colour in life.
ALamoha longirostris (Chen, 1986), female (24.9 × 20.3 mm);
 
BLamoha murotoensis (Sakai, 1979), male (20.8 × 18.4 mm); CParomola macrochira Sakai, 1961, female (16.5 × 11.4 mm); DParomola macrochira Sakai, 1961, female (16.3 × 11.1 mm); EMoloha majora (Kubo, 1936), male (54.8 × 47.8 mm); FHomolochunia gadaletae Guinot & Richer de Forges, 1995, ovigerous female (34.1 × 26.4 mm); GHomolomania sibogae Ihle, 1912, male (15.4 × 11.3 mm); HParomolopsis boasi Wood-Mason, in Wood-Mason & Alcock, 1891, male (20.1 × 17.7 mm). 

Ng & Richer de Forges, 2017. RAFFLES BULLETIN OF ZOOLOGY. 65

Abstract
 Recent collections from southern Taiwan and the South China Sea obtained 10 species of homolid crabs, of which two species of Homologenus A. Milne-Edwards, in Henderson, 1888, are described as new. The taxonomy of the allied H. malayensis Ihle, 1912, from Indonesia and Papua New Guinea is also clarified. The identity of Lamoha superciliosa (Wood-Mason, in Wood-Mason & Alcock, 1891) s. str. from the Indian Ocean is discussed and specimens from East Asian seas that had been referred to this species are here shown to be conspecific with L. longirostris (Chen, 1986) instead. The taxonomy of L. superciliosa and L. longirostris is treated.

 Key words. Taxonomy, new species, South China Sea, deep sea, homolid crabs, Homologenus


Fig. 24. Colour in life, AH from South China Sea;
I, J from Papua New Guinea and Bismarck Sea.
A, Lamoha longirostris (Chen, 1986), female (24.9 × 20.3 mm) (ZRC 2016.0555); B, Lamoha murotoensis (Sakai, 1979), male (20.8 × 18.4 mm) (ZRC 2016.0200); C, Paromola macrochira Sakai, 1961, female (16.5 × 11.4 mm) (ZRC 2016.0560); D, Paromola macrochira Sakai, 1961, female (16.3 × 11.1 mm) (ZRC 2016.0562); E, Moloha majora (Kubo, 1936), male (54.8 × 47.8 mm) (ZRC 2016.0197); F, Homolochunia gadaletae Guinot & Richer de Forges, 1995, ovigerous female (34.1 × 26.4 mm) (ZRC 2016.0198); G, Homolomania sibogae Ihle, 1912, male (15.4 × 11.3 mm) (ZRC 2016.0199); H, Paromolopsis boasi Wood-Mason, in Wood-Mason & Alcock, 1891, male (20.1 × 17.7 mm) (ZRC 2016.0565);
I, Homologenus malayensis Ihle, 1912, ovigerous female (16.0 × 13.9 mm) (MNHN-IU-2015-80); J, Homologenus malayensis Ihle, 1912, ovigerous female (14.9 × 9.9 mm) (MNHN-IU-2014-8052). 

Homologenus exilis n. sp.

Etymology. From the Latin “exilis” meaning “thin or slender”, alluding to the relatively long ambulatory legs of the species when compared to the other new species, H. brevipes. Used as a noun in apposition.

Homologenus brevipes n. sp. 

Etymology. The name alludes to the relatively shorter ambulatory legs of this species when compared to those of the allied new species, H. exilis. Used as a noun in apposition.




Peter K. L. Ng and Bertrand Richer de Forges. 2017. On A Collection of Homolidae from the South China Sea, with Descriptions of Two New Species of Homologenus A. Milne-Edwards, in Henderson, 1888, and the Identities of Homologenus malayensis Ihle, 1912, and Lamoha superciliosa (Wood-Mason, in Wood-Mason & Alcock, 1891).
 RAFFLES BULLETIN OF ZOOLOGY. 65: 243–268. 


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