ART. 20 THE APHID GENUS AMPHOROPHORA — MASON 71 



AMPHOROPHORA VAGANS (Van der Goot) 



Rhopalosiphum vagans Van deb Goot, Records of the Indian Museum, vol. 

 13, pt. 4, no. 2, 1917, p. 177. 



All I know of this species is in Van der Goot's original account. 



AMPHOROPHORA ZHURAVLEVI MordrUko 



Acyrthosiphon (Amphorophora) rubi zhuravlevi Mordvilko, Fauna de la 

 Russie, vol. 1, liv. 2, 1919, p. 265. 



Mordvilko described this form as a subspecies of rubi Kaltenbach. 

 I have not seen it, but judging from his description it is a good species. 

 The apterous form can be distinguished from rubi Kaltenbach by the 

 differences in proportion of the antennal segments (see page 54). 

 I quote herewith a translation of Mordvilko by A. J. Bruman. 



Apterous viviparous female. — Depth of frontal furrow represents about three- 

 tenths the distance between the bases of the antennae. Mouth of furrow about 

 two-thirds this distance. The projection of the vertex is distinct. Antennae 

 somewhat longer than the body. The third segment is one and three-sevenths to 

 one and one-half times longer than the fourth and this one is only slightly longer 

 than the fifth. The base of VI equals one-fifth to two-elevenths the length of 

 the third segment, and the unguis of the sixth segment is one and two-ninths times 

 or thereabouts longer than the third. On the third segment near the base there 

 are 3-4 sensoria, its longest hairs reach three-fifths to four-fifths of the diameter of 

 the proximal part of the segment. The cornicles reach one-fifth to two-ninths 

 the length of the body; toward the base they become wider, at one-fourth 

 to one-third from the base they become narrow, from the point to one-third 

 from the end they widen and finally, at the flange they again become narrow. 

 Cornicles without sculpture, except at the very tip one may notice 2-3 trans- 

 verse, ring-shaped ribs. The cornicles are two and one-half to two and one- 

 third times longer than the cauda. The cauda is long-triangular with uneven 

 laterial edges, with 4-5 bristly hairs on each side. Length of body of two speci- 

 mens was 3.11-3.21 mm. Color as in Ac. rubi rubi; that is, pale yellowish-green. 



Measurements of two specimens from Uralsk 3.11-1.47: Frontal furrow, 0.07; 

 between bases of antennae, 0.23; mouth of furrow, 0.14; width of furrow at the 

 middle of its depth, 0.12, at base 0.08; frontal vertex projection, 0.009; hairs on 

 each side, 0.053. Antennae, 3.43, with the following measurements of individual 

 segments: 0.13, 0.10, 0.86, 0.57 (0.59), 0.54, 0.18 (0.17), 1.06. Hairs on the third 

 segment, 0.017-0.035 (0.017-0.031) ; diameter of proximal part of segment 0.043, 

 near base 3 sensoria. Cornicles 0.66 (0.68), their thickness: 0.10 (base), 0.056 

 (0.22 from base), 0.070 (0.23 from tip), 0.046 (in front of flange), 0.063 (flange). 

 Cauda, 0.26; its thickness 0.15 (base), 0.12 (0.11 from tip); on each side there are 

 four hairs. The posterior femora, 1.16; tibia, 2.15: tarsi, 0.15 (0.046, 0.13); 

 claws, 0.043; hairs on leg, 0.33, 0.066; the diameter of the proximal part of the leg 

 0.050, 3.21, 1.54. Frontal projection, 0.009; hairs on the sides, 0.060. Antennae, 

 3.52, with the following size of separate segments: 0.13, 0.10, 0.86, (0.87), 0.59 

 (0.61), 0.56 (0.58), 0.18 (0.17), 1.10 (1.06). Hairs on the third segment, 0.014- 

 0.027; diameter of proximal part of segment, 0.047; near the base are 4 sensoria. 

 Cornicles, 0.67; their thickness, 0.10, 0.053 (0.19 from base), 0.070 (0.22 from 

 tip), 0.046 (0.016 from tip). 0.046 (in front of flange), 0.070 (flange). The 

 cauda is 0.29 (length), 0.17 (base), 0.10 (0.14 from end); on each side 4-5 hairs. 

 Posterior femora, 1.16; tibia, 2.32; tarsi, 0.15 (0.046, 0.12); claws, 0.043. Hairs 

 on posterior tibia, 0.026-0.066; diameter of the proximal part of the tibia, 0.053. 



Male. — The males are winged. Vertex as in Ac. rubi rubi. In the antennae the 

 third segment considerably (for instance one and two-fifth times) exceeds the 

 fourth, and this one is one and one-fifth longer than the fifth. The unguis of the 

 sixth segment is one and one-sixth times longer than the third segment, the base 



