Dplyr question

Hi All,

Trying to get familiar with dplyr so I have a basic question:

How to summarise sum(Values) per species, maintaining Code column (each species has a Code):

          Species					Values	     Code
1        Acanthocybium solandri        33        		LC
2        Makaira nigricans        		20        		VU
3        Makaira nigricans                 20        		VU
4.       Makaira nigricans                 20       		VU
5	  Sarda sarda        		         2      		LC
4        Lethrinus lentjan                   12        		LC
5        Raja pita        			8        		DD
6        Raja pita  				2			DD

I need:

         Species					Values	     Code
1        Acanthocybium solandri        33        		LC
2        Makaira nigricans        		60        		VU
3	  Sarda sarda        		         2      		LC
4        Lethrinus lentjan                   12        		LC
5        Raja pita        			10        		DD


Thanks :)