Del Norte Salamander

The Del Norte Salamander dataset is consumed from an external Open Geospatial Consortium Web Mapping Service (OGC WMS) via the following URL endpoint and layer name:
  URL:
  https://www.sciencebase.gov/geoserver/CONUS_HabMap_2001/wms
Layer name: Del Norte Salamander (Plethodon elongatus) aDNSAx v1

OpenLayers

If you are developing in OpenLayers 2, you will want to use the OpenLayers WMS class.

An example of your solution might look similar to the code below.

layer = new OpenLayers.Layer.WMS(
    "Del Norte Salamander"",
    "https://www.sciencebase.gov/geoserver/CONUS_HabMap_2001/wms",
    {
      layers: Del Norte Salamander (Plethodon elongatus) aDNSAx v1,
      transparent: "true",
      format: "image/png"
    },
    {}
);

map.addLayer(layer);