References for species Usofila gracilis Keyserling, in Marx, 1891

Species Reference Comment Distribution
Usofila gracilis Keyserling, in Marx 1891: 35, pl. 1, f. 6
(PDF not available.)  (Dmf). USA
Usophila gracilis Fage 1912: 149, f. 2
(PDF not available.)  (mf).  
Usofila gracilis Comstock 1940: 318, f. 207a-e
(PDF not available.)  (m).  
Usofila gracilis Yaginuma 1974b: 15, f. 3
(PDF not available.)  (m).  
None noted here.
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