ART. 20 



THE APHID GENUS AMPHOBOPHOEA MASON 



35 



Van der Goot describes the oviparous female and the male. 



Described from three alate viviparous females and four apterous 

 viviparous females taken by Dr. Edith M, Patch on Onoclea sensihilis 

 at Orono, Me., July 21, 1922 (Maine No. 172-22). Paracotype 

 specimens were taken by T. L. Guy ton at Inglenook, Pa., July 1, 1920 

 (Guyton number 20-58), by Hayhurst at Sheridan, N. Y. (Hayhurst 

 No. 209, Pergande No. 9986), and were received from Takahashi 

 (Q No. 22018). 



Host plants.— Onoclea sensihilis, 0. struthiopteris, Polystichum 

 species, Asplenium species. 



Distribution. — United States (Maine, New York, Pennsylvania, 

 Minnesota), England, Holland, Russia, Japan. 



Cotypes — Returned to Maine Agricultural Experiment Station. 

 Paracotypes deposited in U. S. National Museum. Cat. No. 26373. 



AMPHOROPHORA MAXIMA, new species 



Figs. 174-176 



This is one of the largest species of AmpJiorophora I have seen. We 

 have only a single alate specimen and several nymphs. Like ruMcola 

 Oestlund the cornicle is conspicuously longer than segment III, but 

 it can be distinguished from rubicola by its light-colored antennae 

 and by the smaller number of sensoria on III, about 13-17. The 

 wings are torn, so that I am unable to determine whether or not it 

 has a dusky spot. 



Alate viviparous female. — Antennae longer than the body, light 

 colored, ends of segments and VI darker, hairs about as long as 

 width of segment, III with 13-17 sensoria on outer side; other seg- 

 ments inbricated; length of segments as follows: 



Antennal tubercles prominent. Head 0.608 mm. across eyes. 

 Beak reaching third coxae. No dorsal tubercles showing on head 

 or prothorax. Lateral tubercles present on prothorax and abdomen. 

 Cornicles dark colored, 1.056-1.072 mm. long, distinctly reticulated 

 for 0.08-0.144 mm., the remainder conspicuously imbricated; widest 

 diameter, 0.112-0.064 mm.; flange, 0.08 mm. Cauda light colored, 

 0.32 mm. long, rather broad, distinctly constricted, tip somewhat 

 upturned. 



Described from one specimen taken on salmon-berry in California 

 in 1911. The slide, which bears a number of very young n3rmphs 

 has the Pergande number 124121. Pergande's notes under this 

 number give no additional data, except that they were received in 

 August. 



Cotypes. — Deposited in U. S. National Museum. Cat. No. 26378. 



