PROCTOTRUPOIDEA IN U.S. NATIONAL MUSEUM 113 



Lygocerus latifrons Muesebeck 



Lygocerus latifrons Muesebeck, 1959, p. 93. 



Holotype female, USNM no. 64576; Escondido, Calif., June 1, 1936, 

 from hemerobiid cocoon, D. W. Clancy; well preserved. Eight para- 

 types (males and females). 



Lygocerus leucopidis Muesebeck 



Lygocerus leucopidis Muesebeck, 1959, p. 91. 



Holotype female, USNM no. 64574; Albany, Calif., July 1958, from 

 puparium of Leucopis sp., F. D. Bennett; well preserved. Twenty- 

 three paratypes (males and females). 



Lygocerus niger (Howard) 



Megaspilus niger Howard, 1890a, p. 247. 



Lectotype female, USNM no. 1468; Selkirk, Mich., July 1889; well pre- 

 served. One female paralectotype. 



Lygocerus pacificus Ashmead 



Lygocerus pacificus Ashmead, 1893, pp. 109, 112. 



Holotype female, USNM no. 2201; Placer County, Calif., August; well 

 preserved, only apical segment of left antenna missing. Unique. 



Lygocerus picipes Ashmead 



Lygocerus picipes Ashmead, 1893, pp. 108, 109. 



Holotype female, USNM no. 24395; Ottawa, Canada, Harrington no. 14; 

 left antenna missing after 4th segment, right after 6th. Unique. 



Lygocerus pinicola Muesebeck 



Lygocerus pinicola Muesebeck, 1959, p. 92. 



Holotype female, USNM no. 64575; Berkeley, Calif., June 20, 1958, 

 from Leucopis atrifacies Aldrich, F. D. Bennett; well preserved. 

 Four paratypes (males and females). 



Lygocerus ratzeburgi (Ashmead) 



Dendrocerus ratzeburgi Ashmead, I904d, p. 70. 



Lectotype male, USNM no. 7120; Japan, A. Koebele; well preserved. 

 Described from a male and a female; the female specimen has not 

 been found. 



