AHT. 20 THE APHID GENUS AMPHOROPHORA MASON 11 



nicies, elongated — triangular, at times with a weak constriction at some distance 

 from the base. On each side there are usually four bristly hairs, at times on 

 one side only three hairs. Size of body, 3.25-1.23 mm.; 4.21-1.44 mm. Color 

 green or light green (may be inclined toward light brick or light reddish). An- 

 tennae dark, brownish with the exception of the base of the third segment which 

 is somewhat lighter. The cornicles are dark tawny, darker toward the end 

 (almost black) and lighter toward the base. The ends of the femora are dark; 

 the ends of the tibiae and tarsi are brown. Eyes reddish brown. The color 

 of the extremities is generally darker than in the other subspecies of rubi Kalten- 

 bach. 



Measurements of two specimens. — 4.14-1.44: Frontal furrow, 0.07; between 

 the base of the antennae, 0.26; mouth of furrow, 0.19; width of furrow at the 

 middle of its depth, 0.15, at base, 0.10; central vertex projection, 0.011; hairs 

 on each side, 0.060; antennae, 4.49; with the following lengths of segments: 

 0.17, 0.10, 1.23, 0.98 (0.96), 0.75 (0.73), 0.19 (0.20) + 1.07 (1.09). Hairs on 

 third segment up to 0.040; diameter of the proximal part of the segment, 0.053. 

 Sensoria, 10 (6). Cornicles, 1.02; their thickness 0.12 (base), 0.066 (0.38 from 

 base), 0.11 (0.32 from end), 0.53 (0.05 from end), 0.060 (0.03 from end), 0.056 

 (in front of flange), 0.066 (flange). Cauda, 0.43; its thickness 0.20 (base), 

 0.14 (0.24 from end); on each side 3-4 bristly hairs. Posterior femora, 1.53; 

 tibia, 2.74; tarsi, 0.14 (0.04:0.12), claws, 0.046, hairs on tibia, 0.029-0.063; 

 diameter of proximal part of tibia, 0.066. 



4.03-1.44: Frontal furrow, 0.08; between basis of antennae, 0.26; mouth of 

 furrow, 0.15; width of furrow at the middle of its length, 0.12, at base, 0.08. 

 Projection of vertex, 0.010; hairs on its side, 0.056. Antennae, 4.39; with the 

 following lengths of segments: 0.17, 0.10, 1.21 (1.16), 0.93 (0.94), 0.73, 0.19 + 

 1.06. Hairs on the third segment, 0.027-0.035, diameter of the proximal part 

 of the segment, 0.054. Sensoria near the base of this segment, 9 (12). Cor- 

 nicles, 0.90; their thickness, 0.12 (base), 0.073 (0.27 from base), 0.11 (0.26 from 

 end), 0.055 (0.04 from end), 0.056 (0.02 from end), 0.053 (in front of flange), 

 0.073 (flange). Cauda, 0.45; its thickness 0.21 (base), 0.15 (0.32 from end), 

 0.16 (0.29 from end), 0.15 (0.20 from end); on each side of the cauda are four 

 l)ristly hairs. Posterior femora, 1.57; tibia, 3.08; tarsus, 0.14 (0.04, 0.11); 

 claws 0.043, hairs on tibia, 0.040-0.060; diameter of proximal part of tibia, 

 0.073. 



This form differs from the European {rubi Kaltenbach) in the darker coloration 

 of the antennae, legs, and cornicles, frequently by a more constant small, hardly 

 noticeable swelling of the cornicles in front of the flange and by the lesser num- 

 ber of hairs on the sides of the cauda (in the specimens which I examined there 

 were not more than four on each side). Apparently the North American Micro- 

 siphum rubicola Oestlund, at least by its dark coloration of the antennae and 

 cornicles stands closest of all to Ac. rubi amurense. 



Distribution. — The subspecies is known so far only from the shores of the lower 

 Amur. 



Habits. — -These aphids were collected from the ends of shoots and from the 

 under side of the leaves of raspberry. Their life habits are apparently similar 

 to those of Ac. rubi rubi. 



AMPHOROPHORA AZALEAE, new species 



Apterous viviparous female. — Body light colored. Antennae about 

 one and one-half times as long as body, dark; the tips of the seg- 

 ments and all of segment VI darker; hairs very small and incon- 

 spiciiOiis; III, with 2-3 sensoria near base. Antennal tubercles 



