THE POLITUM GROUP (BULBATE SPECIES) OF LEIOBUNUM (ARACHNIDA: PHALANGIDA: PHALANGIIDAE) OF NORTH AMERICA1
THE POLITUM GROUP (BULBATE SPECIES) OF LEIOBUNUM (ARACHNIDA: PHALANGIDA: PHALANGIIDAE) OF NORTH AMERICA1
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北美 LEIOBUNUM（蛛形纲： PHALANGIDA： PHALANGIIDAE）的 POLITUM 组（鳞状动物种）1
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
C. McGhee
中科院分区：
文献类型：
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作者：
C. McGhee
Leiobunum属（蛛形纲：鬼笔目）包含几个相当明确的物种群，但迄今为止尚未被如此对待。作为分类学修订的基础，本属的主要特征是雄性插入器官的形态。次要特征包括雄性须肢、生殖器盖和其他身体特征。本文描述了仅含“珠芽组”的滑唇兰属的“珠芽种”。“它包括L. polymorphisWeed，L. bracchiopsis，sp . 11月，和L . Holtae，sp. nov.考虑到这些物种的可能的系统发育关系。利用博物馆标本和从阿巴拉契亚山脉中部和南部许多地点收集的标本，最近对北美Leiobunum属进行了一项研究，结果发现了几个不同的物种群。这些类群的识别被认为是重要的，因为它为那些对该属物种感兴趣的人所提出的分类学问题提供了一种不同的方法。重新描述和更详细的插图包括澄清，也许更好地描绘以前描述的物种的性质。一些新的物种已经被描述并包括在组中。雄性生殖器的形态特征在种的划分和种组的建立中是一个重要的分类学特征。雄性须肢、雄性和雌性的背腹被认为是重要的次要性状。通过使用这些特征，试图证明每个群的物种之间可能的系统亲缘关系，也许，尽管是推测性的，对属内的进化趋势的认识获得一些见解。本文讨论了滑脂属（Leiobunum）的“鳞茎状种”（Bulbate Species）的“Polymorphic类群”（Polymorphic Group）。选择术语“pollutants”作为组名是因为L。杂草是其最古老的公认物种。术语“球状”是指在每个物种的阴茎干的远端附近具有封闭的薄壁、球状发育的共同结构特征。目前正在研究的其他类群将包括“具纹组”、“距组”和一个或莫尔个“囊状种”。“到目前为止，有三个物种被归入politum组。Leiobunum polymorphic Weed，1889是一个众所周知的和广泛分布的物种，它是重新描述和说明。其余种为L. holtae和L. bracchiopathy，是新的和描述的第一个
The genus Leiobunum (Arachnida : Phalangida) contains several rather well defined species groups which until now have not been treated as such . The primary characteristic used as a basis for a taxonomic revision of the genus is the morphology of the male intromittent organ. Secondary characteristics include male pedipalps, genital operculum and other body features . This paper describes th e "Bulbate Species" of Leiobunum which contains only the "Politum Group ." It includes description s of L. politum Weed, L. bracchiolum, sp . nov ., and L . holtae, sp. nov . Consideration is also given to th e possible phylogenetic relationships of these species . A recent study of the North American genusLeiobunum utilizing both museum specimens and specimens collected from numerous sites throughout the middle and souther n portions of the Appalachian Mountains has resulted in the recognition of several rathe r distinct species groups . The recognition of these groups is considered to be importan t since it offers a somewhat different approach to the problems of taxonomy encountere d by those interested in the species of the genus . Redescriptions and more detailed illustrations are included to clarify and perhaps better delineate the nature of previously described species. Several new species have been described and included in the groups . The morphology of the male intromittent organ is utilized as a primary taxonomi c character in defining species and establishing species groups . The male pedipalps and mal e and female dorsum and ventrum are considered to be important secondary characters. An attempt has been made to demonstrate, through the use of these characters, possibl e phyletic affinities between the species of each group, and perhaps, although speculatively , to gain some insight toward the recognition of an evolutionary trend within the genus. This paper deals with the proposed "Politum Group" of the "Bulbate Species" o f Leiobunum. The term "politum" was selected as the group name because L. politu m Weed is its oldest recognized species . The term "bulbate" refers to the common structura l feature of having a closed thin walled, bulb-like development near the distal end of th e penial shaft of each species. Additional groups now being studied and to be described in future papers will include the " Vittatum Group," "Calcar Group" and one or mor e groups of "Sacculate Species." Three species are, thusfar, placed in the politum group. Leiobunum politum Weed, 1889 is a well known and widely distributed species which is redescribed and illustrated. The remaining species, L. holtae and L. bracchiolum, are new and described for the first