832 



THE ENTOMOLOGIST. 



ON A LECANIVM FKOM EOCHESTER, N.Y. (U.S.A.), CON- 

 SIDERED IDENTICAL WITH L. JUGLANDIS, Botich6. 



By T. D. a. Cockeeell. 

 Entomologist of the New Mexico Agricultural Experiment Station. 



About fifty years ago, Bouche, who was Director of the 

 Botanic Garden at Berlin, described various Coccidfe which came 

 under his observation. One of these, which occurred in Germany 

 on Juglans nifira and J. regia, is the above-mentioned Lccaii'mm 

 jnglandis. Signoret, in his famous 'Essai,' was obliged to quote 

 Bouche's description, never having met with the species himself. 

 He remarked, however, that he thought L. juglandifex of Fitch, 

 though American, was the same species. 



Turning now to Fitch's writings, we find, in the Trans. N.Y. 

 Agr. Soc. for 1856, p. 463, a description of Lecaniumjuglanclifex, 

 n. sp., the Butternut scale-insect. A comparison of this de- 

 scription with that of Bouche, as quoted by Signoret, seems 

 convincing as to the identity. I will give the characters cited 

 in parallel columns, using for juglandis a translation written by 

 my wife : — 



Ij. juglandis, Bouche. 



? oblong, convex, of a grey- 

 brown with yellow bands, and the 

 dorsal line yellow. Length 2 lines. 

 This cochineal much resembles L. 

 .persiea;, but it is still larger. The 

 females end by becoming formless, 

 with much elevation, and are 2-3 

 lines in diameter. 



[(?] pupa is oblong, depressed, 

 whitish, a little striated. 



(? of a deep reddish brown, with 

 blacldsli head, the wings whitish, 

 the anterior edge red, shaded as 

 far as the first nerves, the tails 

 white. Length f line. The an- 

 tennae of the male have knotty 

 hairs at the extremity. 



Looking through the ' Zoological Record,' I find L. juglandis 

 mentioned in 1873 (Signoret's paper), and again in 1884, It is 



L. jnglandife.v, Fitch. 



[ ? ] Hemispheric, dull yellowish 

 or black, about 0-22 long and 0-18 

 broad, notched at hind end, fre- 

 quently with paler stripe along 

 middle, and paler margin with 

 transverse blackish bands. 



(? pupae are oblong oval, mode- 

 rately elevated white scales about 

 0-10 long and half as broad, thin 

 and somewhat hyaline, with a 

 slender snow-white line running 

 lengthwise along each side of the 

 middle, and uniting posteriorly, 

 with a similar line transversely 

 across the scale half-way between 

 middle and hind end. 



(? rusty reddish, thorax darker, 

 scutel and head blackish, neck 

 narrowly pale red. Antennae 8- 

 jointed [error, no doubt, for 10] . 

 Wings transparent but not glassy, 

 vein reddish. 



