Program: 154150
Project: 154150
Buggy source:
private void processGenusColumn(ItemList items,Term attachTerm){
  for (  final Item it : items.getContents()) {
    final String genusName=stripDagger(it.getName(KnownField.GENUS));
    final boolean isExtinct=daggerPrefix(it.getName(KnownField.GENUS));
    if (genusName.length() > 0 && !INCERTAESEDIS.equalsIgnoreCase(genusName)) {
      if (genusName != null && target.getTermbyName(genusName) == null) {
        final Term genusTerm=target.addTerm(genusName);
        target.setRankFromName(genusTerm,KnownField.GENUS.getCannonicalName());
        if (it.hasColumn(KnownField.SUBFAMILY) && target.getTermbyName(it.getName(KnownField.SUBFAMILY)) != null) {
          final String parentName=it.getName(KnownField.SUBFAMILY);
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (it.hasColumn(KnownField.FAMILY) && target.getTermbyName(it.getName(KnownField.FAMILY)) != null) {
          final String parentName=it.getName(KnownField.FAMILY);
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (it.hasColumn(KnownField.ORDER) && target.getTermbyName(it.getName(KnownField.ORDER)) != null) {
          final String parentName=it.getName(KnownField.ORDER);
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (attachTerm != null)         target.attachParent(genusTerm,attachTerm);
        if (isExtinct) {
          target.setExtinct(genusTerm);
        }
      }
    }
  }
}

Fixed version (ground truth):
private void processGenusColumn(ItemList items,Term attachTerm){
  for (  final Item it : items.getContents()) {
    final String genusName=stripDagger(it.getName(KnownField.GENUS));
    final boolean isExtinct=daggerPrefix(it.getName(KnownField.GENUS));
    if (genusName.length() > 0 && !INCERTAESEDIS.equalsIgnoreCase(genusName)) {
      if (genusName != null && target.getTermbyName(genusName) == null) {
        final Term genusTerm=target.addTerm(genusName);
        target.setRankFromName(genusTerm,KnownField.GENUS.getCannonicalName());
        if (it.hasColumn(KnownField.SUBFAMILY) && target.getTermbyName(stripDagger(it.getName(KnownField.SUBFAMILY))) != null) {
          final String parentName=stripDagger(it.getName(KnownField.SUBFAMILY));
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (it.hasColumn(KnownField.FAMILY) && target.getTermbyName(stripDagger(it.getName(KnownField.FAMILY))) != null) {
          final String parentName=stripDagger(it.getName(KnownField.FAMILY));
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (it.hasColumn(KnownField.ORDER) && target.getTermbyName(stripDagger(it.getName(KnownField.ORDER))) != null) {
          final String parentName=stripDagger(it.getName(KnownField.ORDER));
          target.attachParent(genusTerm,target.getTermbyName(parentName));
        }
 else         if (attachTerm != null)         target.attachParent(genusTerm,attachTerm);
        if (isExtinct) {
          target.setExtinct(genusTerm);
        }
      }
    }
  }
}