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1 October 2013 Absence of a Ventral Spur on the Chelicera in Lacinius ephippiatus (Oligolophinae: Phalangiidae; Opiliones)
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Abstract

Both regular and irregular, i.e., sporadic, absence of the ventral spur (ventral tooth) on the basal cheliceral article has been reported in Oligolophinae. In this contribution, a female Lacinius ephippiatus with one missing ventral spur, and the other partly reduced, on the basal cheliceral article is described. For comparison, we studied chelicerae in a normally developed female from the same locality. We suggest that the ventral spur on the basal cheliceral article is an apomorphic character within Oligolophinae and that its sporadic absence is a case of spontaneous atavism.

P. Kozel and T. Novak "Absence of a Ventral Spur on the Chelicera in Lacinius ephippiatus (Oligolophinae: Phalangiidae; Opiliones)," Entomological News 123(3), 201-205, (1 October 2013). https://doi.org/10.3157/021.123.0306
Received: 18 February 2013; Accepted: 1 April 2013; Published: 1 October 2013
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