PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued iMfii\A,^M iy the 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 

 Washington: 1934 



Vol. 83 No. 2973 



AMERICAN MUSCOID FLIES OF THE GENERA CERA- 

 TOMYIELLA AND PARADIDYMA 



By H. J. Reinhard 

 Texas Agricultural Experiment Station, College Station, Tex. 



This paper contains a discussion of the generic characters of the 

 tachinid genera Geratomyiella and Paradidymal keys for separating 

 the species in both sexes, and descriptions of 24 species, of which 15 

 are new to science. The material used is preserved in the United 

 States National Museum, the Kansas University Museum, and my 

 own collection. 



I am under great obligations to the late Dr. J. M. Aldrich for the 

 privilege of studying the material in the National Museum collection, 

 which he kindly assembled and forwarded to me, and for carrying 

 on considerable correspondence, in which \qvj helpful notes on the 

 genotype of Paradidyma were supplied through the generous coop- 

 eration of Miss Daphne Aubertin, of the British Museum. To Dr. 

 R. H. Beamer I am indebted for permission to examine the type 

 specimens of Lachnomma magnicornis Townsend and Atrophopoda 

 hraueri Williston, in addition to other material, in the Kansas 

 University Museum. 



The genera here under consideration may be readily recognized 

 by the row of bristles extending down the inner margin of the para- 

 facial and the bare first vein of the wing. In the female the fore 

 claws and pulvilli are small or atrophied. There are a number of 

 genera sharing this combination of characters except that the first 

 vein of the wing is beset with hairs. Among approximately 200 

 specimens of Geratomyiella and Paradidyma examined in the pres- 



73007—34 1 a 



