The stunning diversity of midwater ctenophores is well-known to veterans of oceanographic cruises and ROV operations, but many species lack formal descriptions, leading to taxonomic confusion and a systematic underestimation of the biodiversity of the mesopelagic zone. Here, we present a description of a novel genus and species of one such ctenophore, Vampyroctena delmarvensis gen. nov. sp. nov. This cydippid ctenophore, the sole described representative of Vampyroctenidae fam. nov. (Class Tentaculata, Order Cydippida), was collected in mesopelagic waters off the coast of Delaware in the northwest Atlantic Ocean and has a characteristic bright red mesoglea, large paragastric diverticulae, deep red macrocilia, and a darkly pigmented gut. A molecular phylogenetic analysis of Ctenophora based on transcriptomic data places V. delmarvensis gen. nov. sp. nov. as the closest known relative to Euplokamis dunlapae Mills, 1987 (Euplokamididae), in a clade that is sister to all other ctenophore lineages.

中文翻译：

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代表一个新家庭的中古生骨鱼类，并在Ctenophora：Vampyroctena delmarvensis gen中记录了家庭层面的分类学。十一月 sp。十一月 （11月，Fampyroctenidae）

水下巡行和ROV作业的资深人士众所周知，中水下十足动物的惊人多样性，但是许多物种缺乏正式的描述，从而导致分类学混乱和对中弹性带生物多样性的系统性低估。在这里，我们介绍一种新的属和种，例如c虫，Vampyroctena delmarvensisgen。十一月 sp。十一月 唯一描述的Vampyroctenidae fam代表的这种赛普拉德c鳍。十一月 （Tentaculata类，Cydippida类）收集在西北大西洋德拉瓦海岸附近的近中生水域，具有特征性的鲜红色中胚芽，大胃旁憩室，深红色大纤毛和深色肠。基于转录组数据的Ctenophora分子系统发育分析放置了V. delmarvensis gen。十一月 sp。十一月 1987年是与Euplokamis dunlapae Mills（Euplokamididae）亲缘关系最近的亲戚，在一个进化枝上是所有其他c科家族的姊妹。