Hi jpd,
Sorry to hear that the redesign makes it less convenient to access your added species. Have you tried searching for those species in the text search box on the left that says "Enter species or common name"? It should search your local hgcentral.dbDb table (fields: name, genome, scientificName) so it should be able to match the added species.
You will need to substitute some local directory names, and "hgcentral" for "hgcentraltest". Instead of placing the resulting dbDbTaxonomy.js file in ~/kent/src/hg/js/dbDbTaxonomy.js, I recommend giving it a new name, for example dbDbTaxonomy.bergmanlab.js.
If you name the new file dbDbTaxonomy.bergmanlab.js then you will need to copy it into the web server directory htdocs/js/ and add this line to the web server cgi-bin/hg.conf file:
hgGateway.dbDbTaxonomy=../js/dbDbTaxonomy.bergmanlab.js
Angie