﻿576. 

 CINARA ROBORIS. 



The clouded-winajed Oak -louse. 



Order Homoptera. Fam. Aphidae. 



Type of the Genus, Aphis Pini Linn. ? 

 CiNARA Curt. — Aphis Linn., Fab., Lat. 



AntenncE considerably shorter than the body, inserted in the 

 face near to the eyes, filiform, pilose and 7 -jointed, two basal 

 joints robust and oblong, the remainder slender, 3rd the longest, 

 4th and 5th shorter, 6th considerably shorter, 7th abbreviated, 

 apparently triarticulate and conical at the apex (4). 

 Trophi arising from the anterior margin on the underside of the 

 head(F). 



Labrum long, narrow and lanceolate (3). 

 Mandibles and MaxiUcB very long and exceedingly slender. 

 Labium inflected, as long or longer than the antennae, especially 

 in the male (2); pilose, membranous at the base, 5-jointed, 

 basal joint the broadest, elongated, 2nd twice as long, 3rd a 

 little broader and nearly as long as the 1st, 4th shorter, slenderer 

 and attenuated, 5th the shortest and very slender. 

 Head obtuse, broad and transverse : face tricjonate (1). Ocelli S, form- 

 ing a very large triangle, one being at the base of the clypeus, the 

 others close to the internal margin of the Eyes, which are globose, 

 lateral and very prominent. Thorax globose ; collar very short in 

 the male : scutellum semlorbicular . Abdomen short, thick and 

 rounded at the apex, with 2 tubercles on the back of the 5th} segment. 

 Males generally with wings, all membranous, deflexed when at rest, 

 superior ample, tivice as long as the body, the marginal furcate cells 

 elongated (9) ; inferior wings much smaller, with 2 oblique nervures 

 approximating at the casta (*). Females /or the most part apterous 

 (F) . Legs slender, hinder jjair the longest : thighs rather short : 

 tibiae longer, hinder pair very long and curved : tarsi short, biarti- 

 cnlate, 2nd joint twice as long as the \st and clavate : claws bent, 

 acute (6, a fore leg). Obs. The outline figure of the female, being 

 drawn from a dried specimen, does not give the character of that sex 

 so well as could be wished. 



RoBORis Linn. — Curt. Guide, Gen. 1047". 30. 



Shining black, wings iridescent, superior with the apical portion 

 and a fascia across the middle dark brown ; stigma ferruginous, 

 margined by a lunate transparent spot divided in the centre by 

 a brown line ; antennae and legs ferruginous, 2 basal and 2 apical 

 joints of the former fuscous, apex of the tibiae, of the posterior 

 thighs, the hinder tibiae, excepting the base, and all the tarsi 

 piceous. Female similar, but apterous. 



There is no insect that does more mischief in this country, 

 and causes a greater loss of property, than the Aphides, or 

 plant-lice, for not only is the beauty of our gardens defaced 

 and the loveliest flowers destroyed, but the most promising 

 crops are rendered unproductive through the agency of one 

 of these little animals, the Hop-fly. 



The Aphides are very remarkable in their ceconomy, and 

 their increase is almost marvellous : the female is sometimes 



