STATE AGRICULTURAL SOCIETY. 435 



CURRANT. LEAVES. 



leaf leaving tlie skin entire, producing a beetle which occurs 

 upon the bushes in May and June, its wing covers of an oblong 

 square form with elevated lines and intervening rough grooves, 

 its color light yellow, black beneath and with the antennae, the 

 sides and two stripes on the thorax and variable lines on the wing 

 covers also black. Length 0.15. As I have commonly met with 

 this beetle upon the wild black currant, I infer with considerable 

 confidence that its larv^se subsist upon the leaves, mining them as 

 the Rosy Hispa No. 37 does those of the apple. 



145. Currant Aphis, Aphis Rihis^ Linn. (Homoptera. Aphidae.) 



Irregular bulges or blister-like elevations of a brownish red 

 color upon the leaves, opposite which on their under sides are 

 corresponding hollows occupied by multitudes of plant lice suck- 

 ing the juices of the leaf and sometimes covering the green suc- 

 culent young shoots also; many of them without wings and of a 

 pale yellowish color; others with clear glassy wings, and these 

 mostly black with the abdomen light green and having a slightly 

 protruded tail and black horns or honey tubes reaching about half 

 way to the tip, with a row of deep green or black dots along each 

 side forward of the horns, the antennae and legs also black with 

 the shanks and bases of the thighs pale, and with the third 

 oblique vein of the vv'ings obliterated at its commencement. 

 Length 0.13 to the tips of the wings. More or less common in 

 every garden, attended by ants and devoui-ed by lady-birds 

 {Coccinellce) which are always seen on the same bushes, and wliich 

 with other destroyers often wholly exterminate these lice so tliat 

 only the bulged spots on the leaves remain to indicate tlieir 

 having been there. 



146. Oblique-striped LEAF- HOPPER, jETrt/^/ironcura obliqua, Say. (Homop- 

 tera. Tettigoniidse.) 



Puncturing the leaves and sucking their juices, a very small 

 white leaf-hoi^per 0.12 long, its head and thorax with two bright 

 blood-red or orange stripes and three short oblique ones on the 

 wing covers, the outer one placed on the shoulder, the middle one 

 on the disk and the inner one endhicj on the niieldle of the inner 

 margin. This is common, particularly upon the bushes of the 

 wild currant, but occurs on various other shrubs and trees 



