Engel, C. R.Daguin, C.Serrão, Ester2014-06-022014-06-022006Engel, C.R.; Daguin, C.; Serrão, E.A.When is a hybrid a hybrid? A counter-reply to Wallace et al. Molecular Ecology, 15, 11, 3481-34, 2006.0962-1083AUT: ESE00527;http://hdl.handle.net/10400.1/4152In a reply to a brief citation of their paper (Wallace et al . 2004), Wallace et al . (2006) re-analyse their data using the same methods as we did (Engel et al . 2005) to conclude again that an ecad of the brown alga Fucus sp., which occurs only in a particular type of habitat, was a hybrid. While we wholly agree that the ecad individuals (called ‘muscoides-like’) may be putative hybrids, their conclusions were — and remain — confounded with other, alternative explanations. Here, in response to their Reply (Wallace et al . 2006), we wish to clarify our reservations more fully and offer some reflections on identifying hybrids in species complexes.engjournal article2014-05-21http://dx.doi.org/doi: 10.1111/j.1365-294X.2006.02979.x