Proceedings of 

 the United States 

 National Museum 



SMITHSONIAN INSTITUTION • WASHINGTON, B.C. 



Volume 116 1965 Number 3507 



NORTH AMERICAN MOTHS 

 OF THE GENUS SWAMMERDAMIA 

 (LEPIDOPTERA: YPONOMEUTIDAE) 



By W. Donald Duckworth 



Friesc (1960), in his recent revision of the Palaearctic Yponomeu- 

 tidae, proposed a more natural arrangement of the complex of species 

 previously grouped in the genus Swammerdamia Hiibner. The 

 Palaearctic species are now divided into three genera, Pseudoswam- 

 merdamia Friese, Swammerdamia Hiibner, and Paras wammerdamia 

 Friese. In light of this new arrangement it seemed appropriate to 

 examine the two species of Swammerdamia described from North 

 America to determine how they fit into this new scheme. 



The first record of the genus Svmmmerdamia in North America was 

 published by Busck (1911) when he reported collecting specimens 

 identified by him as Swammerdamia pyrella (De Villers) at Monadnock 

 Lake, N.H. Three years later Busck (1914) stated that he had 

 misidentified the specimens from New Hampshire as S. pyrella and 

 that they actually represented a new species which he described as 

 S. castaneae. Braun (1918) described a second species, S. cuprescens, 

 reared from birch in Field, British Columbia. Clarke (1942) reported 

 the first authentic record of S. pyrella (De Villers) from Bellingham, 

 Wash., bringing the known North American species to three. 



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