A review of Chiromantes obtusifrons (Dana, 1851) (Decapoda: Brachyura: Sesarmidae), with descriptions of four new sibling-species from Christmas Island (Indian Ocean), Guam and Taiwan

Zootaxa ◽  
2013 ◽  
Vol 3609 (1) ◽  
pp. 1-25 ◽  
Author(s):  
PETER J.F. DAVIE ◽  
PETER K.L. NG
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Sibling Species ◽  
Species Complex ◽  
Eastern Indian Ocean ◽  
Abdominal Somite ◽  
West Pacific ◽  
Christmas Island ◽  
Species Separation

The identity of Chiromantes obtusifrons (Dana, 1851), previously considered widespread in the tropical West Pacific re-gion to the eastern Indian Ocean, is revised and found to be a species-complex. Chiromantes obtusifrons is now considered endemic to the Hawaiian Is., and four new species are described from Guam, Taiwan and Christmas Island. Two species live sympatrically in Taiwan. Species separation is based on carapace and frontal shape and granulation, leg proportions, abdominal somite proportions, and distinctive live colouration.

The systematics of land crabs of the genus Gecarcoidea and recognition of a pseudocryptic species, G. humei, from the eastern Indian Ocean (Crustacea : Decapoda : Gecarcinidae)

2017 ◽  
Vol 31 (4) ◽  
pp. 406 ◽  
Author(s):  
Joelle C. Y. Lai ◽  
Hsi-Te Shih ◽  
Peter K. L. Ng
Keyword(s):  
Indian Ocean ◽  
Morphological Characters ◽  
Eastern Indian Ocean ◽  
Valid Species ◽  
West Pacific ◽  
Land Crab ◽  
Christmas Island ◽  
Extant Species ◽  
Land Crabs ◽  
The Family

The gecarcinid genus Gecarcoidea H. Milne Edwards, 1837 is currently represented by two species from the Indo-West Pacific – the widely distributed purple land crab, G. lalandii H. Milne Edwards, 1837, and the red crab endemic to Christmas Island, G. natalis (Pocock, 1889). One species, G. humei (Wood-Mason, 1874), described from the Nicobar Islands, has had a confused taxonomic history, but was treated as a junior synonym of G. lalandii by Türkay (1974) in his revision of the family. In this study, using molecular as well as morphological characters, we show that G. humei is a valid species. Gecarcoidea lalandii and G. humei have distinct non-overlapping distributions throughout much of their range, with G. lalandii occurring in most of South-east Asia and the West Pacific, while G. humei is known only from the eastern Indian Ocean. On Christmas Island, in the eastern Indian Ocean, however, all three species are present. As a result, Christmas Island is the only locality where all extant species of Gecarcoidea are found. The three species can also be separated by differences in live colours and patterns, as well as proportions of the carapace, male abdomen, ambulatory legs and third maxillipeds, and details of the orbits and male first gonopods.

Two new species of deepwater flathead Bembras Cuvier, 1829 from the Andaman Sea, eastern Indian Ocean

2018 ◽  
Vol 65 (4) ◽  
pp. 488-495
Author(s):  
Hisashi Imamura ◽  
Peter N. Psomadakis ◽  
Htun Thein
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Andaman Sea ◽  
Eastern Indian Ocean ◽  
Two New Species

scholarly journals A new species of Ancylomenes Okuno & Bruce, 2009 (Crustacea: Decapoda: Pontoniinae) from the Kimberley region, Western Australia

Zootaxa ◽  
2011 ◽  
Vol 3018 (1) ◽  
pp. 66 ◽  
Author(s):  
A. J. BRUCE
Keyword(s):  
New Species ◽  
Western Australia ◽  
Species Level ◽  
Abdominal Somite ◽  
West Pacific ◽  
Pacific Species ◽  
A New Species

The pontoniine shrimp genus Ancylomenes Okuno & Bruce, 2009 now includes 17 Indo-West Pacific species (Okuno & Bruce 2009). With a few exceptions, such as A. aesopius (Bate, 1863) and A. longicarpus (Bruce & Svoboda, 1983), these present a highly consistent morphology, differing at species level principally in details of the rostrum, third abdominal somite, ophthalmic process, dentition of the second pereiopod chelae, and ambulatory propods and dactyls. This consistency renders detailed descriptions repetitive and largely redundant.

A new species of Palaemonella Dana, 1852, (Crustacea: Decapoda; Pontoniinae) from the Red Sea

Zootaxa ◽  
2008 ◽  
Vol 1844 (1) ◽  
pp. 63 ◽  
Author(s):  
A. J. BRUCE
Keyword(s):  
New Species ◽  
Red Sea ◽  
Species Complex ◽  
West Pacific ◽  
A New Species

A new species of the pontoniine shrimp genus Palaemonella Dana, 1852, from the Red Sea is described and illustrated. Found from 519–544m; this is the greatest depth from which this genus has so far been reported. It is a species of the Indo-West Pacific P. dolichodactylus species complex, to the taxa of which a key is provided.

The order Zoraptera (Insecta) from Christmas Island, Indian Ocean

1995 ◽  
Vol 9 (2) ◽  
pp. 243 ◽  
Author(s):  
TR New
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Christmas Island ◽  
Insect Order ◽  
A New Species

A new species of Zorotypus Silvestri, Z. lawrencei, sp.nov., is described from female specimens collected on Christmas Island, marking the first species of the insect order Zoraptera from an Australian territory.

Two new species of the scorpionfish genus Trachyscorpia (Sebastidae:  Sebastolobinae) from the southern Indo–West Pacific, with comments  on the distribution of T. eschmeyeri

Zootaxa ◽  
2007 ◽  
Vol 1466 (1) ◽  
pp. 19-34 ◽  
Author(s):  
HIROYUKI MOTOMURA ◽  
PETER R. LAST ◽  
GORDON K. YEARSLEY
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Lateral Surface ◽  
The Body ◽  
Morphometric Characters ◽  
West Pacific ◽  
Two New Species ◽  
Upper Jaw ◽  
Southwestern Indian Ocean ◽  
Pelvic Fin

Two new species of the scorpionfish genus Trachyscorpia are described on the basis of 20 and 7 specimens collected from Australasia at depths of 731–1020 m and the southwestern Indian Ocean at depths of 620–1080 m respectively. The two new species, classified into the subgenus Mesoscorpia, are distinguished from the only other member of the subgenus, T. (M.) eschmeyeri, by the following characters: the tympanic spines absent (vs. usually present in the latter), the upper-jaw lip well developed, covering the premaxillary tooth band laterally (vs. lip poorly developed, the premaxillary teeth exposed laterally), scales absent on the lateral surface of the maxilla (vs. scales present), and 4 blackish saddles on the body in preserved specimens (vs. no blackish saddles). Trachyscorpia (M.) carnomagula sp. nov. differs from T. (M.) longipedicula sp. nov. in having 57–63 scale rows in longitudinal series (vs. 50–53 in the latter). They are also distinguished by several morphometric characters, including lengths of pelvic-fin spine and soft ray, and first anal-fin spine. The subgenus Mesoscorpia is redefined. A key to the species of Trachyscorpia and comments on distribution of T. (M.) eschmeyeri are also provided.

Labuanium vitatum (Crustacea: Decapoda: Brachyura: Sesarmidae), a new Indo-West Pacific species of arboreal crab

Zootaxa ◽  
2011 ◽  
Vol 2889 (1) ◽  
pp. 35 ◽  
Author(s):  
PETER K. L. NG ◽  
PETER J. F. DAVIE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Species Group ◽  
Species Status ◽  
West Pacific ◽  
Full Species ◽  
Pacific Species ◽  
A New Species

A new species of Labuanium Serène & Soh, 1970, L. vitatum is described from northeastern Indian Ocean. It belongs to the L. rotundatum species-group, but is most closely related to L. scandens Ng & Liu, 2003, and L. papuomalesiacum (Nobili, 1899), the latter being here formally removed from synonymy with L. rotundatum (Hess, 1865) and raised to full species status. The new species differs from congeners by numerous characters including the structure of the male first pleopod, carapace and third maxillipeds, and by differences in proportions of the male abdominal somites.

Sign in / Sign up

Export Citation Format

Share Document