JAPANESE SAWFLIES IN THE COLLECTION OF THE 

 UNITED STATES NATIONAL MUSEUM. 



By S. A. RoHWER. 



Bureau of Entomology , U. S. Department of Agriculture, Washington, D. C. 



In connection with work on Nearctic Tenthredinoidea it has been 

 deemed advisable to study the faunae of the world, and more espe- 

 cially that of the Palsearctic region, to obtain a more perfect knowl- 

 edge of the genera and to become better acquainted with the work of 

 other writers on these insects. In these days of fast steamship con- 

 nection between the different countries the possibility of introducing 

 foreign insects into this country is much greater than in former times. 

 A conspicuous example of this has already been observed — when 

 Nesodiprion (olim Lophyrus) japonicus (Marlatt) came to the port of 

 San Francisco on a Japanese pine in 1902. 



The following paper is a partial result of the study of the collection 

 of sawflies from Japan in the United States National Museum. The 

 material has been presented by Mr. T. Tukai, Mr. A. Koebele, and 

 Doctor Matsumura, and part is thought to belong to a collection sent 

 by Dr. K. Mitsukuri. 



The list of species which follows is believed to be complete. All 

 synonyms are omitted. "V^Tien the species is unknown in nature, the 

 the generic position given is usually that assigned by Konow. 



Family XYELID^. 



XYELA JAPONICA, new species. 



Differs from the European Xyela julii (Brebisson) as determined 

 by Konow as follows: The clypeus has a small rounded tubercule in 

 the middle and is more coarsely sculptured; antenna! furrows are 

 wanting near the ocelli and on the front; the postocellar line is less 

 than the ocelloccipital line; the head is darker, and the mesonotum 

 coriaceous. 



Female. — Length of body, 3 mm.; length of ovipositor, 1.25 mm.; 

 length of anterior wing, 3.5 mm. Head as wide as the length of the 

 second and third antenna! joints, occiput convex; antenna! furrows 

 wanting; postocellar area not defined; the postocellar line shorter 



Procefdinqs U. S. National Museum, Vol. 39— No. 1777. 



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