LACHNUS PINI. 51 



Very large. Colour of various shades of brown, but 

 usually of a dull brownish, grey. Strongly pilose, par- 

 ticularly on the abdomen, which is soft and velvet like. 

 Whole body finely punctured with dark brown dots. 

 Dark patches occur on the front, the thorax, and the 

 apical abdominal rings. Head large ; eyes black and 

 prominent. Antennae fine, the third and fourth joints 

 cinereous brown, the other joints black. Legs very 

 stout and long, the hind pair particularly so. Colour 

 pale drab with black femoral and tibial tips. Tarsi 

 double-jointed and long. Cornicles obtuse and conical. 

 Rostrum stout and about three quarters the length 

 of the whole body. The whole insect is clothed with 

 tawny hair. 



Active in its habits, like the last two species, it 

 rapidly threads the green pinnules of the Scotch fir, 

 Pinus sylvestris, to avoid observation. It is solitary 

 in its haunts, occurring sparsely on the older twigs, 

 with the bark of which it assimilates so well in colour 

 that it easily may be overlooked, except from the small 

 tufts of cotton-like fibre that it attaches to the leaves. 



Taken at Haslemere and at Southgate in June ; but 

 it appears to be rather restricted in locality. 



Wijiged viviparous female. 



This form is fully described by Kaltenbach and by 

 Walker. It is reddish brown and covered with yel- 

 lowish hair. The thoracic region is studded with 

 black punctures. 



De Geer makes some lengthy remarks on this Aphis 

 under the name of Aphis nuda pini. The colour of 

 the wingless forms is dependent on age. They occur 

 occasionally of hues — yellowish, greenish, and reddish 

 brown. Living specimens of these I have not met 

 with. 



