This news item explains how to find the gaps in coverage in ADU Virtual Museum projects. On the Virtual Museum website, first choose (from the left hand side menu) the project you are interested in finding the gaps for. Then, from this menu, choose "Maps" and click on the tab "Gap Analysis" and then on "Request summary." A map like the one on the left appears. The grid generates the Quarter Degree Grid Cells. Those with data are coloured. Those without data are blank. Click on the grid cell you are interested in. A Google map like the one on the right appears. This grid cell is 2824DA and covers part of Kimberley, and a section of the Vaal River. It is the basic road map that appears first; I clicked "Satellite" at the top right corner to get this view.
If a grid cell has records, then a species list for the Quarter Degree Grid Cell appears under the map.
This is the Gap Analysis for LacewingMAP. It is little short of astonishing that this new section of the Virtual Museum already has records for 47 Quarter Degree Grid Cells, 2.3% of the region.
This is Version 1 of the ADU Virtual Museum Gap Analysis. It will be extended to cover Africa, and be extended to be able to find the gaps for specific time periods, for example, gaps since 2000.