Achelata
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| Scholtz & Richter 1995 |
The Achelata are a suborder of the decipod crabs . It contains some species of lobster of culinary importance.
features
The edge area of the tail fan is not calcified and is therefore, unlike almost all other decapod crabs, soft and flexible. The so-called phyllosoma , a larval stage that is characterized by a flat, leaf-shaped carapace , is unique among the decapods . All Achelata have an enlarged antenna base (antenna peduncle).
The name-giving feature is the lack of scissors on the first four pairs of striding legs (Greek Chelae "scissors", a- as Alpha privativum "-los"). Only females have small claws on the fifth pair of striding legs. Another exception is the species Justitia longimanus , which carries so-called subchelae on the first pair of striding legs, with which gripping is possible.
Systematics
The Achelata consist of two recent families with a total of 143 species:
- Lobster (Palinuridae) Latreille, 1802 including the furry lobster (Synaxidae)
- Slippery shrimp (Scyllaridae) Latreille, 1825
swell
- Gerhard Scholtz and Stefan Richter: Phylogenetic systematics of the reptantian Decapoda (Crustacea, Malacostraca) . In: Zoological Journal of the Linnean Society . tape 113 , 1995, pp. 289-328 ( pdf 2.7Mb ).
Individual evidence
- ↑ Sammy De Grave, N. Dean Pentcheff, Shane T. Ahyong et al .: A classification of living and fossil genera of decapod crustaceans . In: Raffles Bulletin of Zoology . Supplement No. 21. 2009, p. 1-109 ( pdf 7.73Mb ).
