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.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 123 • No. 3