Jacobus van der Vecht
... that a number of insect species were named in honour of Dutch entomologist Jacobus van der Vecht?
... that a number of insect species were named in honour of Dutch <a href="./Entomology" id="mwA6k" rel="mw:WikiLink" title="Entomology">entomologist</a> <b id="mwA6o"><a href="./Jacobus_van_der_Vecht" id="mwA6s" rel="mw:WikiLink" title="Jacobus van der Vecht">Jacobus van der Vecht</a></b>?