Thaumastochelopsis

Thaumastochelopsis
Systematics
Class :	Higher crabs (Malacostraca)
Order :	Decapods (decapoda)
Subordination :	Pleocyemata
Partial order :	Large crayfish (Astacidea)
Family :	Lobster-like (Nephropidae)
Genre :	Thaumastochelopsis
Scientific name
	Thaumastochelopsis
	Bruce , 1988

Thaumastochelopsis is a marine genus of the decapods (Decapoda) from the family of the lobster-like (Nephropidae). It comprises two species, both of which arenative tothe Coral Sea near Australia.

description

The genus has a uniform yellowish-white color. The carapace lengths of the previously known specimens range from 19 to 33 mm, with total body lengths from 46 to 78 mm.

The rostrum is flattened towards the front and slopes downwards, it has lateral teeth. The carapace is granulated and has no particular ridges. The pleon is strongly depressed and, like the carapace, mainly granulated on the back. The telson has a square shape with round corners and has no spines or thorns. The stalk eyes are mobile but unpigmented. The exopodites of the third maxillipede are stunted.

The scissors on the first pair of striding legs are fully developed and clearly unequal and of different lengths. The hand (palm) of the larger scissors appears swollen, the fingers are elongated and have many variable thorns. With the smaller scissors, the hand is rather elongated and the length of the scissor fingers is longer than that of the scissor hand. The second, third and fifth pair of striding legs are also provided with very small scissors.

The first pair of swimming legs is reduced in females and without branching, while in males it is clearly two-parted. The uropods are hairy on their edges and have a clear diaeresis, a transverse depression.

distribution and habitat

The species of the genus are common in the Coral Sea. The find of Thaumastochelopsis brucei comes from 425 m depth, the finds of Thaumastochelopsis wardi from 199 to 250 m depth. So far nothing is known about the habitat. However, it is assumed that the species of this genus, like other lobster-like species, can also be found on rather soft substrates where they inhabit caves.

Systematics and taxonomy

The genus consists of the following species, which are v. a. distinguish by the different reinforcement of the dactylus and propodus of the first pair of striding legs:

Thaumastochelopsis brucei Ahyong, Chu & Chan, 2007
Thaumastochelopsis wardi Bruce, 1988

Thaumastochelopsis is closely related to the genera Thaumastocheles and Dinochelus . These three genera form a monophyletic group within the lobster-like. From Thaumastocheles , Thaumastochelopsis u. a. due to the different stalk eyes and the morphology of the exopodites of the maxilla.

AJ Bruce described the genus using two captured specimens of Thaumastochelopsis wardi . This species is thus a type species . The suffix '-opsis' means 'external appearance of', the generic name therefore refers to the similarities with Thaumastocheles .

literature

Individual evidence

↑ ^a ^b ^c ^d ^e ^f A.J. Bruce: Thaumastochelopsis wardi, gen. Et sp. nov., a new blind deep-sea lobster from the Coral Sea (Crustacea: Decapoda: Nephropidea) . In: Invertebrate Taxonomy . tape 2 , 1988, p. 903-914 ( PDF, 2.7 MB [accessed June 29, 2012]).
↑ ^a ^b ^c ^d ^e ^f Shane T. Ahyong, Ka-Hou Chu, Tin-Yam Chan: Description of a new species of Thaumastochelopsis from the Coral Sea (Crustacea: Decapoda: Nephropoidea) . In: Bulletin of Marine Science . tape 80 , no. 1 , 2007, p. 201–208 ( abstract and link to full text [accessed June 29, 2012]).
↑ Tin-Yam Chan: Annotated checklist of the world's marine lobsters (Crustacea: Decapoda: Astacidea, Glypheidea, Achelata, Polychelida) . In: The Raffles Bulletin of Zoology . Suppl. 23, 2010, p. 153–181 ( PDF, 1.7 MB [accessed June 29, 2012]).
↑ Dale Tshudy, Rafael Robles, Tin-Yam Chan, Ka Chai Ho, Ka Hou Chu, Shane T. Ahyong, Darryl L. Felder: Phylogeny of marine clawed lobster families Nephropidae Dana, 1852, and Thaumastochelidae Bate, 1888, based on mitochondrial genes . In: Joel W. Martin, Keith A. Crandall, Darryl L. Felder (Eds.): Decapod Crustacean Phylogenetics . CRC Press, 2009, ISBN 1-4200-9258-8 , pp. 357–368 ( PDF, 1.2 MB [accessed June 29, 2012]).

[Bruce-1] ↑ ^a ^b ^c ^d ^e ^f A.J. Bruce: Thaumastochelopsis wardi, gen. Et sp. nov., a new blind deep-sea lobster from the Coral Sea (Crustacea: Decapoda: Nephropidea) . In: Invertebrate Taxonomy . tape 2 , 1988, p. 903-914 ( PDF, 2.7 MB [accessed June 29, 2012]).

[Ahyong-2] ↑ ^a ^b ^c ^d ^e ^f Shane T. Ahyong, Ka-Hou Chu, Tin-Yam Chan: Description of a new species of Thaumastochelopsis from the Coral Sea (Crustacea: Decapoda: Nephropoidea) . In: Bulletin of Marine Science . tape 80 , no. 1 , 2007, p. 201–208 ( abstract and link to full text [accessed June 29, 2012]).

[Chan-3] Tin-Yam Chan: Annotated checklist of the world's marine lobsters (Crustacea: Decapoda: Astacidea, Glypheidea, Achelata, Polychelida) . In: The Raffles Bulletin of Zoology . Suppl. 23, 2010, p. 153–181 ( PDF, 1.7 MB [accessed June 29, 2012]).

[Tshudy-4] Dale Tshudy, Rafael Robles, Tin-Yam Chan, Ka Chai Ho, Ka Hou Chu, Shane T. Ahyong, Darryl L. Felder: Phylogeny of marine clawed lobster families Nephropidae Dana, 1852, and Thaumastochelidae Bate, 1888, based on mitochondrial genes . In: Joel W. Martin, Keith A. Crandall, Darryl L. Felder (Eds.): Decapod Crustacean Phylogenetics . CRC Press, 2009, ISBN 1-4200-9258-8 , pp. 357–368 ( PDF, 1.2 MB [accessed June 29, 2012]).