Just wanted to write this example down before I loose it. Browsing Bill Piel's trees in Google Earth, and was looking at Lee et al.'s paper (doi:10.1111/j.1365-294X.2005.02707.x) on Physalaemus pustulosus. Searching in iSpecies.org lead to records in GenBank, whereupon I stumble on the fact that in GenBank it is Engystomops pustulosus (Taxonomy ID: 76066). Following up the reference on the NCBI taxonomy page, I find a
PDF of the paper freely available (although only a URL for an identifier). Browsing the GenBank records (e.g., DQ337249), I find Ron et al. (10.1016/j.ympev.2005.11.022). Among other things, this paper refines the genus Engystomops:
Engystomops, Jiménez de la Espada 1872 (converted clade name). Definition: clade stemming from the most recent common ancestor of E. petersi Jiménez de la Espada 1872, and E. pustulatus (Shreve, 1941).
Then paddling off to HerpNET I query for "Engystomops pustulosus" and get one record, whereas for "Physalaemus pustulosus" I get lots of records (although the geographic range doesn't include all the localities in doi:10.1111/j.1365-294X.2005.02707.x.
My point? Well, don't really have one, except that again we are clicking around different web sites to get a complete picture of what is going on, important data are attached to different names for the same animal, and the nature of those names themselves may vary (for example, Nascimento et al. define Engystomops as a set with a type species (E. petersi), whereas Ron et al. (10.1016/j.ympev.2005.11.022) define Engystomops as a least common ancestor of two taxa on a tree. All of this makes integration a challenge, to say the least.