CREATE TABLE table_name_70 (red_list INTEGER, family VARCHAR(255), species_authority VARCHAR(255))
What is the highest Red List for the muridae family and species Authority of microtus pinetorum (le conte, 1830)?
    
SQL: SELECT MAX(red_list) FROM table_name_70 WHERE family = "muridae" AND species_authority = "microtus pinetorum (le conte, 1830)"