RECTIFICATIONS CONCERNING HOMOPTERA. 



BY JULES LICHTENSTELN-. 



I. Coccus latanice, Boisduval (Boisduvalia latanice, Signoret), a 

 very curious, round, brownish leaf-louse, fringed with a snow-white 

 circle of fine secretion, and very common in hot-houses on all kinds 

 of Latanice and Calami, is neither a Coccus nor an Aleurodes, but a 

 true Aphidian. The very scarce winged form looks entirely like the 

 winged forms of the genus Vacuna, Heyden ; it has the same forked 

 neuration of the upper wings, and five-jointed antennae all with fine 

 circles. It is easily distinguished at once from the Vacunce by the 

 presence of two little conical-pointed horns between the antennae 

 under the forehead. I suggest for it the new generic name Ceeat- 

 aphis ("horned plant-louse"), and the species will become Cerataphis 

 latanice, Boisduval. 



II. Coccus rubi, Schrank, has not, according to Signoret, been re- 

 discovered since the short description appeared in the "Fauna Boica." 

 But I found the insect last autumn, and succeeded in breeding it. It 

 lives in the larval state through the winter, sucking the under-side of 

 the leaves of Bubus discolor. Early in spring the male larva forms a 

 little cocoon in the same manner as in Dactylopius, and the imago 

 makes its appearance in April. The female is an oval, purple-red 

 scale-louse, fringed and spotted with snow-white woolly secretion, and 

 has eight-jointed antenna?. The male is also purple-red, and has ten- 

 jointed antenna? ; wings and legs white ; four snow-white tails or setae, 

 the interior pair as long as the entire insect, the exterior as long 

 as the wings. This latter character induces me to term the genus 

 "Tetruea," and the species will thus be T. rubi, Schrank. 



Montpellier : 8th April, 1882. 



Note on Aphalara nebulosa, Zett. — This species was originally introduced by 

 me into the British list in my Monograph of the Psyllidce, under the name of A. 

 radiata, from specimens in the collection of the Rev. T. A. Marshall, which were 

 taken at Cheltenham, as he informed me, either by beating or sweeping. In No- 

 vember, 1876, Dr. F. Low sent me an example from the Imperial Museum of Yienna, 

 desiring to know whether it was the same species as that described by me ; but as 

 he did not then give, nor has since given, me any clue as to what plant it was 

 attached, I presume he has not been in a position to do so. Dr. O. M. Reuter, 

 however, in the " Entomologisk Tidskrift " for 1881, p. 152, sp. 7, says that he has 

 seen an example from Stockholm, on the ticket of which is "in Epilobio angustifolio," 

 and as this, as well as other species of willow-herb, are not uncommon throughout 

 this country, we appear to be now in a fair way to become acquainted with it. 

 Nothing seems to be known of its earlier stages, so that a still greater inducement 

 is in store for those who desire to be first in the field. — John Scott, Lee, S.E. : 

 March 6th, 1882. 



