Insects affecting the orange . to breed, owing to the fact that it in its turn is parasitized by achalcid, of which we have bred thirty-six specimens from a single co-coon, all having made their exit, as usual, from a single hole. It is pos-sible that this chalcid may also be a primary parasite. The specimens were referred to Mr. Howard for study, anddecided to be a new species of the genusEncyrtus of Dalman. It was described {) as Encyrtus artacea n- sp. THE GRASS-WORM. {Laphygma frngiperda, Sm. & Abb.)[Figs. 69 and 70.] Patches of the eggs of this common mothare very commonly found o
Insects affecting the orange . to breed, owing to the fact that it in its turn is parasitized by achalcid, of which we have bred thirty-six specimens from a single co-coon, all having made their exit, as usual, from a single hole. It is pos-sible that this chalcid may also be a primary parasite. The specimens were referred to Mr. Howard for study, anddecided to be a new species of the genusEncyrtus of Dalman. It was described {) as Encyrtus artacea n- sp. THE GRASS-WORM. {Laphygma frngiperda, Sm. & Abb.)[Figs. 69 and 70.] Patches of the eggs of this common mothare very commonly found on orange although the young caterpillars eat theleaves to some extent, they soon find theirway to some other and more succulent food-plant. Full-grown caterpillars are scarcelyever seen upon the Orange, although they can be bred upon it in eggs are dull white, with a pearly luster. The clusters contain a variable number of eggs, and are covered with mouse-colored down from the body of the Fig d ()9.—Laphygma frugiperda:a, larva, natiiral size; b, licad ;c, inidtUe joiut from above; d, side, eularged. (AfterRiley.)
Size: 1382px × 1807px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherwashi, bookyear1885
