We had plenty of discussion a couple years back about the proposal to divide Anolis into eight genera. The debate seems to have quieted down without clear resolution. Now, in a new paper on Mesoamerican herp conservation, Johnson and colleagues come out in favor of the Nicholson et al. proposal. I’ll place their commentary below, but I want to address a point they raise at the end of their discussion.
Johnson et al. conclude: “We agree that Nicholson and her coauthors provided a perceptive set of reasons why their classification will be accepted in time, just as with other classifications that sought to make sense of formerly unmanageable genera, such as Eleutherodactylus , which now not only is segmented into a number of genera, but also a number of families.”
This is not the place to discuss or debate these points, which have been thoroughly aired in previous commentary in these pages [e.g., 1,2]. But what about the authors’ suggestion that this new classification will be accepted in time? Is that happening?
It’s hard to assess how the winds of systematic practice blow, but I took a crack using Google Scholar, restricting my search to the years 2014 and 2015. When I queried how many hits there were for “Anolis,” GS returned (searched on August 14, 2015): “about 2600.” For Norops, “about 110.” Can we conclude that represents a 24-fold preference for the old taxonomy over the new one? Of course not. For one thing, some of those Anolis papers may have been referring to species that would still be Anolis in the new classification, most notably A. carolinensis.
I then tried again, focusing on probably the most studied species that would change its name in the new classification, Anolis (Norops) sagrei. In this case, for the same 2014-2015 period, GS located 16 hits for Norops sagrei vs. 270 for Anolis sagrei. These results would seem to indicate that the new classification system hasn’t penetrated very far into the broader scientific community.
One clear schism in the anole community is between those scientists who work in the West Indies, who overwhelmingly use the name Anolis, versus those in Central and South America, who are more split. So, as a second test, I looked at what I think may be the most frequently referred to mainland anole, A. limifrons. The GS search in this case yielded six hits for N. limifrons and 22 for A. limifrons. Searching on the species chrysolepis gave a comparable result, 29-8 in favor of Anolis (and proving that my guess was wrong about which species is most discussed in the literature). Still a large preference for the established taxonomy, but only a 4:1 ratio compared to sagrei‘s 17:1 ratio.
Of course, there are much more sophisticated ways of addressing their question, but they would take a lot more time. Anyone want to dig further?
Here’s what the authors have to say (broken into paragraphs for easier reading):