. Economic entomology . ITopIrphora contractilis. Ditto, .â -hut up. perffC- insect, not siiut up. Copied from Claparede. Claw of ditto. Copied from Clapariide. M. Claparede of Geneva, not long before his death, made a series of studies of the Acaridae, one result of which was to reveal an affinity between the Oribatidte and the Acarids proper (cheese mite tribe), which, if suspected, had, at all events, not been previously tistablished. The older writers, Gervais for example, instinctively, perhaps, felt that it was so, and so arranged them; but in the most recent handbooks (such as those of
. Economic entomology . ITopIrphora contractilis. Ditto, .â -hut up. perffC- insect, not siiut up. Copied from Claparede. Claw of ditto. Copied from Clapariide. M. Claparede of Geneva, not long before his death, made a series of studies of the Acaridae, one result of which was to reveal an affinity between the Oribatidte and the Acarids proper (cheese mite tribe), which, if suspected, had, at all events, not been previously tistablished. The older writers, Gervais for example, instinctively, perhaps, felt that it was so, and so arranged them; but in the most recent handbooks (such as those of Gerstaecker and Glaus), the GamasidjB and Ixodid^ are placed between the Oribatidse and the Acarids proper, but Glaparede has given good reasons for regarding this as an unnatural arrangement. The arrangement of Gervais was better. He placed the Acarids next the Ixodidse, and the Oribatidae last; but we wish to close the arrangement of the mites with the parasitic Sarcoptidse as a passage to the lice, and therefore place the Oribatidse before the Acarids instead of after them, it being indifferent so far as any other affinity is concerned^ where we place them. The present species was the medium which led Claparede to these conclusions. It lives in moist and decaying fir wood, burrowing in and feeding on the wood, the burrows for the most part running parallel with the vessels of the Avood, but also occasionally running into one another. Its habits thus give some facility for observation. A morsel of v/ood inhabited by them could be put in a glass tube and kept at the proper degree of moisture, while their development is being watched. The perfect mite is very minute, clothed with a thick, hard, rigid, brown coat of mail, and with a curious power of
Size: 4393px × 1138px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha
