Morphology of the spermatheca in the Cydnidae (Hemiptera: Heteroptera): Bearing of its diversity on classification and phylogeny
Morphology of the spermatheca in the Cydnidae (Hemiptera: Heteroptera): Bearing of its diversity on classification and phylogeny
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伞蛾科（半翅目：异翅目）受精囊的形态：其多样性对分类和系统发育的影响
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发表时间：
2008
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通讯作者：
J. Lis
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作者：
D. Pluot;J. Lis
对目前已知的5个亚科（遗忘科、头脊科、Cydninae、garsaurinae、Sehirinae）共65属190种的精囊表皮部分和相关阴道结构（主要是顶阴腺的环状硬膜）进行了研究和比较。还研究了原属鲤科的4种（Dismegistus, Parastrachia, Thaumastella, Thyreocoris）。描述了精囊的三个主要部分（精囊（远端球），中间部分（泵器），精囊管）的形态。从远端花托和中间部分可以识别出四种主要的精子类型：Amaurocorini型（在Sehirinae: Amaurocorini中）、遗忘型（在遗忘科中）、garsaurine型（在garsaurinae中）和“cydnoid”型（在Cephalocteinae + Cydni- nae: Cydnini， Geotomini + Sehirinae: Sehirini中）。没有发现这些类型的突触性，这表明目前设想的雪蝇科不是单系的。此外，在这四种类型中，只有“卵状体”是典型的五突状，这是由于中间部分的存在，通常由两个法兰很好地划分，并且总是有一个未硬化的柔性区，以及两个内部角质层结构（隔膜和隔膜）部分阻塞管腔。在所有的五子体中，简单管状的黑毛石型是不寻常的和异常的。与五子纲以外的分类群有一定的相似之处，特别是与一些卵圆精科或卵圆精科的相似之处，主要表现在中间部分未近端划界（无法兰）和无挠性带。在“卵状”类型中，主要根据顶端储层及其中间部分的形状和精管的分异来划分6种精囊相。不可能找到所有物种和属于精子囊“卵状体”类型的六个相的任何突触形态。我们认为目前定义的雪蝇科可能是一个多系群；此外，其主要的“cydnoid”分支，即我们所称的严格的cydidae （Cephalocteinae + Cydninae + Sehirinae: Sehirini）似乎在五元总科中相对较晚。Nishadana和Nishocoris从Garsauriinae转移回Cydninae: Cydnini和Amauro- corini部落（Sehirinae）被升级为一个单独的Amaurocorinae亚科。11 .此外，我们认为Geotomini和Sehirini都是非单系的，并通过附加它们来表明它们是sensu lato （Geotomini“s. l.”，Sehirini“s. l.”）。内容
Cuticular parts of the spermatheca and associated vaginal structures (chiefly the ring sclerites of the parietovaginal glands) have been examined and compared in 190 cydnid species representing 65 genera and all five subfamilies currently recognized in the family (Amnestinae, Cephalocteinae, Cydninae, Garsauriinae, Sehirinae). Four species belonging to genera formerly included within the Cydnidae (Dismegistus, Parastrachia, Thaumastella, Thyreocoris) were also examined. Morphology of the three main parts of the spermatheca (seminal receptacle (distal bulb), intermediate part (pump apparatus), spermathecal duct) is described. Four main types of spermathecae can be recognized from the distal receptacle and the intermediate part: the amaurocorine type (in Sehirinae: Amaurocorini), amnestine type (in Amnestinae), garsauriine type (in Garsauriinae), and "cydnoid" type (in Cephalocteinae + Cydni- nae: Cydnini, Geotomini + Sehirinae: Sehirini). No synapomorphy of these types was found which suggests that the currently con- ceived Cydnidae are not monophyletic. Moreover, out of these four types only the "cydnoid" is typically pentatomoidean due to the presence of an intermediate part usually well delimited by two flanges and having always an unsclerotized flexible zone as well as two internal cuticular structures (septum and fretum) partly obstructing the lumen. The simple tubular amaurocorine type is unusual and aberrant within all Pentatomoidea. The amnestine and garsauriine types display some similarities with taxa outside the Pentato- moidea, especially with some lygaeoid or coreoid spermathecae, mainly in the structure of the intermediate part not delimited proxi- mally (absence of flanges) and devoid of the flexible zone. Within the "cydnoid" type, six spermathecal facies can be characterized principally according to the shape of both the apical reservoir along with the intermediate part, and the differentiations of the sper- mathecal duct. It has been impossible to find any synapomorphy for all species and for the six facies belonging to the "cydnoid" type of spermatheca. We suggest that the Cydnidae as defined presently are probably a polyphyletic group; moreover its main "cydnoid" branch, called by us Cydnidae sensu stricto (Cephalocteinae + Cydninae + Sehirinae: Sehirini) seems to be relatively recent among the Pentatomoidea. Nishadana and Nishocoris are transferred from Garsauriinae back to Cydninae: Cydnini and the tribe Amauro- corini (Sehirinae) is upgraded to a separate subfamily Amaurocorinae stat. nov. Moreover, we regard the Geotomini and the Sehirini both as non-monophyletic and we indicate that by appending them sensu lato (Geotomini "s. l.", Sehirini "s. l.") Contents