We describe a new unusual setule on type IV urticating setae of the theraphosid spider Homoeomma uruguayense (Mello-Leitão 1946). These processes have a filiform stalk and a funnel-like apex that arise from the main axis of the urticating seta. The probable function of these structures in passive and active defense is discussed.
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1 April 2010
An unusual setule on type IV urticating setae of Homoeomma uruguayense (Araneae: Theraphosidae)
Carlos Perafán,
Fernando Pérez-Miles
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