Insects : their life-histories and habits . ;and it may have occurred to him to wonder how the culpritobtained access to its snug quarters. The explanation isreally quite simple. Its parent, the nut-weevil (Balamnusnucum), bores a hole with her long rostrum in a youngnut, and inserts her egg. As the nut develops and theshell hardens, all trace of the injury is obliterated. Butthe grub within feeds sumptuously upon the kernel. Inthe autumn it bores a small round hole through the shell,drops to the ground, hibernates beneath the soil, andchanges to a pupa in the early spring. The pea beetle(Bruc
Insects : their life-histories and habits . ;and it may have occurred to him to wonder how the culpritobtained access to its snug quarters. The explanation isreally quite simple. Its parent, the nut-weevil (Balamnusnucum), bores a hole with her long rostrum in a youngnut, and inserts her egg. As the nut develops and theshell hardens, all trace of the injury is obliterated. Butthe grub within feeds sumptuously upon the kernel. Inthe autumn it bores a small round hole through the shell,drops to the ground, hibernates beneath the soil, andchanges to a pupa in the early spring. The pea beetle(Bruchus pisi) is another seed - destroying insect. Thefemale lays her eggs on the pods when they are veryyoung, and the grub on hatching bores through the podand into a pea, where it finds sufficient nourishment forits development. It eventually pupates in the pea, havingfirst eaten its way to the outer coat, so that when theadult beetle matures it has only to break its way througha thin skin. An allied species of Bruchus is said to Plate XXIX. Marble Galls, on Oak. caused by the (.all-wasp Cynipa kollari. (Inset) The insect, greatly magnified
Size: 1878px × 1331px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1913
