.'.Mi THE CANADIAN ENTOMOLOGIST. 



Aphis caryte, Harris, Ins. Inj. to Veg., 1841. 



" The largest species known to me is found in clusters beneath the 

 limbs of the pignut hickory ( Carya porcina), in all stages of growth, from 

 the first to the middle of July. It is the Aphis caryce. of my catalogue. 

 Its body, in the winged state, measures one-quarter of an inch to the end 

 of the abdomen, and above four-tenths of an inch to the tips of the upper 

 wings, which expand rather more than seven-tenths of an inch. It has no 

 terminal stylet, and the honey tubes are very short. Its body is covered 

 with a bluish-white substance like the bloom of a plum, with four rows of 

 little transverse black spots on the back ; the top of the thorax and the 

 veins of the wings are black, as are also the shanks, the feet and the 

 antennae, which are clothed with black hairs; the thighs are reddish 

 brown. This species sucks the sap from the limbs and not from the 

 leaves of the hickory." 



I have used the description of Mr. C. M. Weed as given to this 

 species under Lachnus platamcola, p. 286, Vol. Ill, Insect Life, which 

 also helps to explain the synonymy, and is complete except the mention 

 of the long, slender, curved stigma, which is shown in his illustrations. 



Description. 



" Apterous viviparous female : Body 6 millimeters long by 3 5 

 millimeters wide across middle of abdomen ; antennie 3 millimeters long ; 

 posterior legs 9 millimeters long. 



"General colour light brown, with a glaucous bloom. Antennse, eyes, 

 most of head, two triangular spots united basally on middle of pronotum, 

 a large quadrangular spot on middle of mesonotum, one row of small 

 spots on each side of the dorse-meson on the segments posterior to this, 

 another row along each side margin of all the dorsal segments, and a few 

 smaller spots between the middie abdominal terga, together with cornicles, 

 black ; coxae du^ty ; trochanters and femora, except tips, reddish-brown ; 

 tips of femora, together with tibiae and tarsi, black, except that the middle 

 of the tibia is often reddish-brown. Cornicles very short, conical, truncate. 

 Ventral surface dusky, with a glaucous bloom. Rostrum dusky, reaching 

 posterior coxae. Body, legs and antennae furnished with rather long, 

 light-brown hairs. Antennae roughened ; joint iii very long, equal to iv 

 plus v. the latter being subcqual, though v is slightly longer than iv ; vi 

 short, with a well-developed thumb, forming vii ; v slightly enlarged near 

 tips by a distinct sensorium ; and another on vi, at the base of the 

 projecting thumb. 



