74 BULLETIN 826, U. S. DEPARTMENT OF AGRICULTURE. 



Characters. — Cornicles absent. Stem-mother with five-segmented antennse; alate 

 form with the media simple, the cubitus a,nd anal joined near their bases. Hind wings 

 with only the media present, antennee of six segments, armed with large subcircular 

 or elongate sensoria. Forms living in true galls. 



Type (monotypical), Tetraneura lentici Pass. 



Genus MELAPHIS Walsh. 



Plate XII, F-K. 



1S66. Melaphis Walsh, Proc. Ent. Soc. Phila., v. 6, p. 281. 

 1883. Schlechtendalia Lichtenstein, Stett. Ent. Zeit., v. 44, p. 240. 

 1905. Abamahkia Del Guercio, Redia, v. 3, p. 364. 



Walsh erected his genus for rliois Fitch, a species forming galls on 

 sumach and in his discussion mentioned the Chinese gall, wonder- 

 ing if it could be congeneric. The writer has recently published an 

 account of the Chinese gall 1 and therein placed Schlechtendalia Licht. 

 as a synonym of Melaphis. Del Guercio's genus was erected with 

 his lazareivi as type and placed as a thelaxine. Although the writer 

 has never obtained specimens of this species he is of the opinion 

 that it can not possibly be one of these insects and that it evidently 

 belongs in the Melaphini where the shape of the stigma would imme- 

 diately place it as a Melaphis. 



Characters. — Cornicles absent. Apterous form with five-segmented antennae. 

 Alate form with either five or six segmented antennge which are armed with some- 

 what linear or oval sensoria. Fore wings with the media simple, although sometimes 

 slightly forked, distal extremity of the stigma rather long drawn out; hind wings with 

 both media and cubitus present; abdomen with distinct wax plates. Forms living 

 in galls from which the alate forms escape in late summer or fall. 



Type (monotypical), Byrsocrypta rhois Fitch. 



Genus NURUDEA Matsumura. 



• Plate XII, L-Q. 



1917. Nurudea Matsumura, Synopsis of the Pemphigidae of Japan, p. 65. 

 1917. Nurudeopsis Matsumura, Synopsis of the Pemphigidae of Japan, p. 67. 

 1917. Fushia Matsumura, Synopsis of the Pemphigidae of Japan, p. 70. 



Matsumura erected his genus Nurudea for his Nurudea ihofushi, a 

 species somewhat similar to a species of Melaphis. This species differs 

 quite markedly, however, in the form of the stigma. At the same 

 time he erected the genus Kurudeopsis with -A 7 , shiraii as type. This 

 species differs little from ihofushi excepting in the proportions of the 

 segments, and hi the fact that the cubitus and first anal are some- 

 what closer togetner at the base. The writer is of the opinion that 

 these characters are not sufficient on which to form another genus. 

 In the same work also he erected the genus Fushia with Fushia rosea 

 Mats, as type. This species differs somewhat from the t} r pe of Nuru- 

 dea but the writer believes that there are not differences sufficient 

 to cause this to be considered as a separate genus. The antennae 



i Baker, A. C. On the Chinese gall (Aphididae— Horn.). In Ent. News, v. 28, p. 385-393, 1917. 



