Two new species of Oxycera (Diptera, Stratiomyidae) from Ningxia, China Yang, Zai-Hua ; Yu, Jin-Yong ; Mao-Fa, Yang Abstract Publication: ZooKeys Pub Date: May 2012 DOI: 10.3897/zookeys.198.2624 Bibcode: 2012ZooK..198...69Y