AFRICAN APHIDIDAE — PART II. 151 



areas, all three, however, paler than the large central dusky area of the head. Eyes 

 very small and black. Antennae pale, sixth segment pale smoky. Thorax and 

 abdomen hairy, bright orange. Venter orange. Proboscis reaching well beyond 

 third coxae, dark at apex, pale medianly, dusky at base. Legs pale, including tarsi ; 

 claws dark. 



Egypt: Ghezireh, 30.iv.09 and 5. v. 08 (F. C. Willcocks). Occurring also in 

 Italy, France, and Britain. 



Food-plants. Bean roots, including French beans (Phaseolus vulgaris), broad beans 

 (Fabia) and scarlet runners (Phaseolus coccineus) ; also Brassica, Euphorbia and 

 Amaranthus. 



The apterae from Egypt agree exactly with European specimens. The alate female 

 of this species does not appear to have been described before. It is very marked 

 both in antennal structure and wing venation (fig. 37). Willcocks sends a note saying 

 that it occurs in very large colonies on bean roots in the Laboratory gardens, and that 

 the alate females are produced in numbers. The young when born are quiescent, 

 the limbs not being free, but only remain in that condition a very short time, soon 

 becoming very active. 



Rhizobius ?graminis, Buckton (fig. 38). 



Buckton, Mono. Brit. Aph., iv, p. 93, pi. cxxix, figs. 9-14 (1882). 



Alate viviparous female. — ^Head, antennae, thoracic lobes and legs black, the rest 

 of the body ohvaceous green, yellowish green or dull yellowish green, median dorsal 

 area dusky grey. Head small, narrow in front, shghtly indented in the middle ; 

 eyes large and black. Antennae not as long as the head and thorax, of six segments, 

 with pale bands between the black segments ; first small, irregular, broader than the 

 second, which is semiglobular ; the third shghtly longer and narrower, constricted 

 at the base, with one large apical sensorium ; the fourth of the same length as or 

 shghtly shorter than the third, of similar form and with a large apical sensorium ; 

 the fifth a httle longer and rather narrower than the fourth, narrowed at the base, 

 with a single large apical sensorium ; sixth the longest, with a short blunt nail and an 

 elongate large sensorium. Proboscis short, thick, reaching nearly to or just past the 

 first pair of legs. Wings iridescent, with yellowish green insertions and dusky costa ; 

 ochreous stigma, margin bottle-green ; veins pale smoky, with smoky pigment 

 outhning them; longer than the body; venation marked (fig. 38). Legs rather 

 short and with small scanty hairs on the tibiae, a few on the apex of the femora and 

 one on the tarsus ; ungues double on each leg. Cauda dusky, small, the anal plate 

 projecting beneath, with rather long hairs. Body nude. Venter ochreous green, 

 shghtly farinose laterally ; prosternum smoky green ; sternal plate black. 

 Length, 1*8-2 mm. 



Apterous viviparous female. — Entirely pale creamy white, pale buff or dull yellowish, 

 except the legs, antennae and head, which are smoky ; elongate oval. Head small, 

 rounded in front. Antennae farinose, brown to smoky ; very short, of five segments ; 

 the first four nearly equal in length ; the first and second broader than the third 

 and fourth ; the fifth the longest, as long as the third and fourth and thinner, with 

 a short blunt nail ; a single large sensorium at the apex of the fourth and two at the 

 base of the nail of the fifth. Proboscis short and thick, the three segments nearly 

 (C177) e2 



