EDIT

1. The area label should be in its own span dom element with class attribute area-label
2. The area label and language label are properties of the description element and thus should go inside of the DescriptionElement-CommonTaxonName span element. --> rejected! This makes no sense since the common names are grouped by name, so the lables must be separate.

Once implemented apply the following css to the salvador portal:

#block-cdm-dataportal-feature-common-name  .language-area-label {
  display:none;
}

... and consider setting the areas again in the salvador DB.