This work was made possible through support from the City of Basel (Natural History Museum Basel), the Kugler-Werdenberg Stiftung Basel, the Swiss National Foundation (Grant No. 20-43058.95), and the Werenfels-Fonds Basel. Thanks go to Norbert Vischer (University of Amsterdam, NL) for providing me with the Focus Extend macro, to Norman MacLeod and two anonymous reviewers for their comments on improving the manuscript.