Four new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from shallow groundwater habitats on the Coastal Plain and eastern margin of the Piedmont in Maryland and Virginia, USA
			        		
				        							        		JOHN R. HOLSINGER
			        			        				        		, 					        
				        							        		LYNNETTE MEADOR ANSELL
			        			        				        		, 					        
				        							        		JUSTIN SHAFER
			        			        				        							        			        	
			    			  
					Published on: 2011-07-21
			    	
                            
                                			            
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