84 BULLETIN 826, U. S. DEPAKTMENT OF AGEICULTURE. 
Genus HORMAPHIS Osten-Sacken. 
Plate XIV, Y-FF. 
1861. Hormaphis Osten-Sacken, Stettiner Ent. Zeit., p. 422. 
The genus Hormaphis was erected by Osten Sacken for a species 
he described as Jiamamelidis. This species it later proved was the 
same described by Fitch as Byrsocrypta Jiamamelidis. The genus 
later was made to include spinosus Shimer, but the distinction 
between this genus and the one described by Shimer has been 
pointed out by Pergande. 1 
Characters. — Cornicles absent; aleyrodiform generations developed; wax glands 
very numerous; stem mother with three-segmented antennae; alate forms with three- 
segmented antennae which are armed with distinct annular sensoria. Wings held 
flat in repose; fore wings with the media simple; hind wings with the cubitus 
absent. Sexual forms small and apterous, possessing beaks, oviparous female laying 
several eggs. 
Type (monotypical), Hormaphis hamamelidis O. S. (Byrsocrypta hamamelidis Fitch). 
Tribe OREGMINI. 
Characters. — Forms living in galls or otherwise upon the leaves of plants, possess- 
ing cornicles and wax secreting glands. Antennae of the winged forms usually armed 
with annular sensoria; cauda rounded or somewhat knobbed, anal plate somewhat 
bilobed. No aleyrodiform generations developed. The sexual forms appear to be 
unknown. 
Key to the Genera of the Oregmini. 
1. Vertex with two horn-like projections 2. 
Vertex without such horn-like projections 3. 
2. Antennae five-segmented Oregma. 
Antennae four-segmented Ceratoglyphina. 
3. Antennae of apterous form with five segments 4. 
Antennae of apterous form with four segments Glyphinaphis. 
4. Media of fore wings once branched Astegopteryx. 
Media of fore wings simple Mansakia. 
Genus ASTEGOPTERYX Karsch. 
Plate XV, Q-X. 
1890. Astegopteryx Karsch, Ber. deutsch Botan. Ges., v. 8, p. 52. 
1906. Nipponaphis Pergande, Ent. News, v. 17, p. 205. 
1916. Schizoneur aphis Van der Goot, Zur Kenntniss dor Blattlause Java's, p. 245. 
The genus Astegopteryx was erected with styracophila Karsch 
as type. Another species, neJcoasJii, was described by Sasaki before 
the International Congress at Brussels in 1911 and a third species, 
styraci, was described by Matsuinura in 1917. It is possible, there- 
fore, to gain a fair conception of the characters. In 1906 Pergande 
erected his genus Nipponaphis with distycliii Perg. as type. This 
species was stated to be from DistyeJiium racemosum in Japan, on 
1 Pergande, T. The life history of two species of plant lice inhabiting both the witch-hazel and birch. 
U. S. Dept. Agr. Bur. Ent. Tech. Ser. no. 9. 1901. 
