. Elementary entomology. Entomology. 74 ELEMENTARY ENTOMOLOGY - a there is no metamorphosis. In some forms there are rudimentary appendages on the underside of the abdomen, which are supposed to be degenerated abdominal legs, though not now capable of being used as such. The order is divided into two distinct suborders, sometimes considered separate orders. Bristletails {Thysanurd). One of the commonest bristletails is the little shiny fish-moth, which annoys housekeepers by getting into starched clothes, among books, papers, etc. It is about half an inch long, with long antennae and three bri
. Elementary entomology. Entomology. 74 ELEMENTARY ENTOMOLOGY - a there is no metamorphosis. In some forms there are rudimentary appendages on the underside of the abdomen, which are supposed to be degenerated abdominal legs, though not now capable of being used as such. The order is divided into two distinct suborders, sometimes considered separate orders. Bristletails {Thysanurd). One of the commonest bristletails is the little shiny fish-moth, which annoys housekeepers by getting into starched clothes, among books, papers, etc. It is about half an inch long, with long antennae and three bristles extending half the length of the body from the tip of the abdomen, and is covered with silvery scales which glisten as it darts around in a book- case or drawer, reminding one of a fish's scales flashing in the sunlight. They are very soft-bodied little insects, more abundant in warm climates, and feed on starchy matter or soft paper. In some species of bristletails the bris- tles have been modified into forcep- like appendages. Most bristletails are much smaller than the fish- moth, and are found beneath stones, logs, and loose bark, and in similar situ- ations ; and one genus {Machilis), found in many parts of the world, has rudimentary abdominal appendages, as shown in Fig. 88. Springtails {Collembold). Every boy who has worked in a northern maple-sugar " bush " knows the litde snow fleas, large numbers of which jump around on the snow and have a propen- sity for getting into the sap buckets. Other species are found on. Fig. 88. Underside of abdomen of a female Machilis ?na>-iii>na, to show rudimentary limbs {a) of segments 2 to 9; c, cerci. (Enlarged) (After Oudemans, from Folsom). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero F
Size: 994px × 2513px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
