看链接：澳大利亚国家网站对什么是真正lobster 的定义

Classification	Rock Lobsters	Lobsters	Crayfish
Kingdom	Animalia	Animalia	Animalia
Phylum	Arthropoda	Arthropoda	Arthropoda
Subphylum	Crustacea	Crustacea	Crustacea
Class	Malacostraca	Malacostraca	Malacostraca
Order	Decapoda	Decapoda	Decapoda
Infraorder	Achelata	Astacidea	Astacidea
Family	Palinuridae	Nephropidae	Cambaridae, Astacidae, Parastacidae

Lobsters, sometimes named “true” lobsters, belong to the family Nephropidae whereas rock lobsters belong to Palinuridae. Moreover, there are three families of crayfish: Cambaridae, Astacidae,Parastacidae, also different from the two previous families.

http://museum.wa.gov.au/research/collections/amphipods/crustacea-section/lobsters-rock-lobsters-and-crayfish

所有跟帖： 

• 哈哈，看到底谁是龙的私生子。。 -司马南瓜- ♂ (0 bytes) () 09/21/2016 postreply 07:43:11

• 中文“龙虾”特指无钳Palinuridae，有钳子的在科学上在渔船上叫做螯虾。也许可以叫螯龙虾，但实际没人这么叫。 -中航科工六院- ♂ (0 bytes) () 09/21/2016 postreply 07:49:00

• 翻译的一点错没有。蟹六跪而二螯。―《荀子·劝学》中国人形容大钳子的时候还没LOBSTER这个词 -中航科工六院- ♂ (0 bytes) () 09/21/2016 postreply 08:01:05