On the Hemerobiinae of Japan. 



By 



Waro Nakahara. 



With pi. r. 



In continuation of my paper on the subfamily Osmylinae (family 

 Hemerobiidne), published in the ' Annotationes,' 1 * I propose here to give 

 short descriptions of all the Japanese forms, known to me at present, of 

 another subfamily, the Hemerobiinae. 



Only five species 25 of the Hemerobiinae, so far as I am aware, have 

 hitherto been recorded as indiginous to Japan, viz, Hemerobius Harman iinus 

 Nav:is, Ninguta deltoides (Navâs), Micromus numerosus Navâs, M. novitius 

 Navàs, and Sisyrell i nikkoana (Navâs). From my studies of the subfamily 

 during the last few years seventeen more species have become known to 

 me, thus giving in all twenty-two species to the Hemerobian fauna of Japan. 

 Of the newly added species only two could be identified with species 

 hitherto known outside of Japan, and all the rest I consider to be new to 

 science. Two new genera I have been led to erect for the reception of 

 some of the species. Besides, I have divided the subfamily into two tribes, 

 the Hemerobiini and the Neurorthini. 



Here I beg to express my warmest thanks to Mr. E. Petersen, who 

 has kindly taken the wing photographs reproduced in this article and 

 moreover has favored me with kind advice and valuable specimens 

 of European Hemerobians. My hearty thanks are also due to Messrs. A. 

 Nohira, S. Yamamura, and some other friends for gifts of man)' in- 

 teresting specimens. 



1) On the Osmylinae of Japan. Annot. Zool. Japon., viii, pp. 4S5-518 (1914). 



2) Without taking into account nomina nuda, such as Megalomus pun tains Mats., Hemerobius 

 albosligma Mats., Mkromus multipwictatus Mats., &c, which were given by Prof. Matsumura in 

 his " KonchC-Bunruigaku " and " Ekichu-Mokuroku." 



