GENERIC CLASSIFICATION OF APHIDIDAE. 67 
Genus GEORGIA Wilson. 
Plate IX, U-Z. 
1911. Georgia Wilson, Can. Ent., v. 43, p. 64. 
The genus Georgia appears to be related to Colopha Mon., and yet 
many of the characters are so like those of Eriosoma that the insect 
suggests that genus also. Especially to the species E. americanwn 
Riley there is a striking resemblance. Prominent wax glands are 
lacking but these are sometimes also lacking in the spring forms of 
Eriosoma. 
Characters. — Cornicles present and situated on shallow hairy cones as are those of 
Eriosoma. Stem mother with five-segmented antennae ; alate form with six-segmented 
antennae which are armed with narrow sensoria that do not encircle the segment to 
any extent. Fore wings with the media once branched, hind wings with only one 
oblique vein. Cauda rounded. Prominent wax pores such as those present in 
Eriosoma lacking, but small wax areas present. 
Forms living in pseudogalls on plants, the alate individuals migrating from the 
galls in the early spring. 
Type (monotypical), Georgia ulmi Wlsn. 
Genus GOBAISHIA Matsumura. 
Plate X, A-G; XI, V. 
1909. Byrsocrypta Tullgren, Arkiv for Zoologi, Bd. 5, no. 14, p. 182. 
1917. GobaisMa Matsumura, Synopsis of the Pemphigidae of Japan, Gifu, Japan, p. 75. 
Tullgren used the name Byrsocrypta Hal. as the name of a sub- 
genus with pallida as type, placing it under Tetraneura. He appar- 
ently overlooked the fact that Westwood had set bursarius as the 
type of the genus Byrsocrypta as will be found discussed under the 
genus Pemphigus. Pallida is different from the species of Tetraneura, 
in that the cubitus is retained in the hind wing. If OolopJia is retained 
on account of the branched nature of the media in the fore wings it 
will be necessary to place pallida as typical of a genus related to 
Tetraneura. 
In 1917 Matsumura erected the genus Gobaishia with Gobaishia 
japonica Mats, as type. This species was stated to be very similar to 
Tetraneura alba Ratz. Tetraneura alba Ratz is the same species as 
Eriosoma pallida Haliday and the characters given for the genus are, 
therefore, similar to Tullgren's conception of Byrsocrypta. The 
figures drawn are from specimens of pallida as no japonica was avail- 
able to the writer for study. 
Characters. — Cornicles present, stem mother with four-segmented antennse, alate 
forms with six-segmented antennse which are armed with annular sensoria. Fore wings 
with the media usually simple; hind wings with both cubitus and media present. 
Type (fixed by Matsumura, 1917), Gobaishia japonica Mats. 
