PAEACLETUS CIMIOIFOKMIS. 67 



Paracletus cimicifoemis, Heijd., Plate CII, fig. 4. 



Kali., Pass. 



Ajpterous viviparous female. 



.Oval, flat, somewhat shining ; colour wax-yellow, 

 naked. Head rounded, with a furcate mark on the 

 vertex. Eyes small, but obvious. Antennae six- 

 jointed, hairy, yellowish, and about half the length of 

 the body. Abdomen carinated and garnished with 

 rows of small dots. 



This Aphis does not appear to be plentiful anywhere. 

 It has mostly been taken in the nests of Formica rufa, 

 and then usually in company with another underground 

 Aphis , For da fo rmica ria . 



It has somewhat the appearance of the bed-bug, 

 whence its name, but it is active in its movements, and 

 runs quickly. Kaltenbach found about fifty of them, in 

 the month of April, in one nest, where he considered 

 that they had passed the winter in friendly relations 

 with the ants. 



Passerini found them on the roots of Festuca durius- 

 cula. Like Kaltenbach, he notices that the wing-ed 

 form IS unknown ; but Walker describes the veining of 

 the wing of an example that he appears to have met 

 with. Unfortunately, he does not even say if the cubital 

 vein is twice or only once forked. His description, 

 indeed, leaves it doubtful whether his insect was a 

 Schizo7ieura, a Lachnus, or other genus.* 



* Walker's ' Cat. Homop. in the British Museum,' vol. iv, p. 1062. 



