Forest entomology . entary. Seventh joint setaceous, and as longas the third. Cornicles cylindrical, and equally thick short, sometimes hardly visible. Legs moderately long. Wingsgenerally shorter than the preceding genera, but veining similar. Aphis craT;£gi (Kalt.) In several districts in Cheshire during the season 1893-94 verymuch damage was done to young thorn hedges and young quicks bythe Aphis cratcegi, young thorns in many cases being killed is no mistaking this pest. In consequence of growth beingarrested, the shoots are comparatively short, the leaves c
Forest entomology . entary. Seventh joint setaceous, and as longas the third. Cornicles cylindrical, and equally thick short, sometimes hardly visible. Legs moderately long. Wingsgenerally shorter than the preceding genera, but veining similar. Aphis craT;£gi (Kalt.) In several districts in Cheshire during the season 1893-94 verymuch damage was done to young thorn hedges and young quicks bythe Aphis cratcegi, young thorns in many cases being killed is no mistaking this pest. In consequence of growth beingarrested, the shoots are comparatively short, the leaves curl up, andin general appearance the infested plants look as if the leaves andyoung shoots are covered and killed with fresh soot (fig. 281). If infested plants are examined during the winter months, the top-most portions will be found studded with dark-brown eggs. Theseeggs hatch out as soon as the leaves burst, and throughout the summerthe insect pest in all its various stages may be found. 302 FOREST It is very variable in colour and appearance. Hence Buckton re-marks that it is exceedingly difficult to reconcile the descriptionsof various insects named Aiihis cratcegi by authors. The apterous viviparousfemale is a bright - green-coloured insect with browneyes. The antennae areshorter than the body. Thethird and seventh joints arethe longest. The corniclesare comparatively long, cylin-drical, and equally thickthroughout. The tail isshort but conspicuous. The pupa in many respectsresembles the apterous speci-mens, but on the whole isvery much smaller in size. As I have not made any descriptive notes on the winged form (fig. 282) when examining the living insect, and mounted specimens lose all colour, I append Bucktons description :— Head, neck, ring, thorax, and its lobes black, head broad and convex, abdomen shining bright-green, with the same marked carin-ation and minute pore marks ofthe larvae. Cornicles long andstraight, colour olive - green, an-tennae an
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