| 词条 | Leuconidae |
| 释义 |
| regnum = Animalia | phylum = Arthropoda | subphylum = Crustacea | classis = Malacostraca | subclassis = Eumalacostraca | superordo = Peracarida | ordo = Cumacea | familia = Leuconidae | familia_authority = Sars, 1878 | diversity_link = #Genera | diversity = 16 genera }}Leuconidae is a family of marine hooded shrimp (order Cumacea). The family was established by Georg Ossian Sars in his 1878 study of Mediterranean cumaceans.[1] DescriptionLeuconidae retain the original number of free thoracic somites, but do not possess a free telson. Their mandibles are truncated dorsally to the molar. In males, the flagellum of the second antenna reaches beyond the hindmost edge of the carapace. Their gills do not have gill plates or other supports.[2] The endopods (interior branches) of the uropods are present on two (or more rarely one) segments. The males of almost all Leuconidae also have pleopods, typically two pairs that lack an external process on the inner ramus. In females the second antenna is greatly reduced. They have exopods (outer branches) on the maxillipeds and on the first two pereiopods, in females of some species often also on the third, and in the males of most species also on the third and fourth.[2] Genera{{div col|colwidth=20em}}
References{{Wikispecies}}1. ^{{cite journal |author=Georg Ossian Sars |year=1878 |title=Nye bidrag til kundskaben om Middelhavets Invertebratfauna. II. Middelhavets Cumaceer |trans-title=New contribution to the knowledge of the Mediterranean invertebrate fauna. II. Mediterranean cumaceans |journal=Archiv for Mathematik og Naturvidenskab |volume=3 |pages=416–512 + pls. 1–18 |language=Danish |authorlink=Georg Ossian Sars}} {{Taxonbar|from=Q2040939}}2. ^1 {{cite web |author=Les Watling |work=World Cumacea database |url=http://www.marinespecies.org/cumacea/cumacea.php?p=taxdetails&id=110382 |title=Leuconidae |date=December 21, 2004 |accessdate=April 9, 2009 |publisher=World Register of Marine Species}} 1 : Cumacea |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。