WEB BUILDING BEHAVIOR AND THE PHYLOGENY OF AUSTROCHILINE SPIDERS
WEB BUILDING BEHAVIOR AND THE PHYLOGENY OF AUSTROCHILINE SPIDERS
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南线蜘蛛的建网行为和系统发育
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Luis A. Compagnucci
中科院分区：
文献类型：
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作者：
Lara Lopardo;M. Ramírez;Cristian J. Grismado;Luis A. Compagnucci
摘要我们报道了南美澳唇蛛Thaida peculiaris和澳唇蛛Austrochilus forsteri的自然历史和织网行为，它们是蜘蛛目中相对基础的谱系。这两个筛状的属的物种构建大，二维片网与漏斗撤退。当梳理筛状丝时，澳蛛使用两条第四腿，就像恩氏蛛，而不像Hypochilidae和Filistatidae。此外，梳理腿IV的交替由参与筛状节段的附接的腿III确定;与进行附接的腿III同侧的腿IV将梳理下一节段，除了第一节段。这种相似性Entelegyandria在梳理与第四条腿相矛盾的基础araneomorph关系目前的假设，并建议Austrochilidae可能是姐妹组entelegyne蜘蛛。
Abstract We report on the natural history and web building behavior of the South American austrochilids Thaida peculiaris and Austrochilus forsteri, relatively basal lineages within Araneomorphae. Species of these two cribellate genera construct large, two-dimensional sheet webs with a funnel retreat. When combing cribellate silk, austrochilids use both fourth legs, like entelegyne spiders, and unlike Hypochilidae and Filistatidae. Furthermore, the alternancy of combing legs IV is determined by the leg III involved in the attachment of a cribellate segment; the leg IV ipsilateral to the leg III that made the attachment will comb the next segment, except for the first segment. This similarity to Entelegynae in combing with both fourth legs contradicts current hypotheses of basal araneomorph relationships and suggests that the Austrochilidae may be the sister group of entelegyne spiders.