. Economic entomology. Beneficial insects; Insect pests; Thysanura. 220 ARACHNOIDEA, CASE heavy body, rendered still more unseemly by the filth with which XIII. ^ ' , , ' they cover themselves, upsets them at every- step they take when they walk on a flat surface. Their larvae are like the perfect insect, only softer and whiter, and they are always covered by a layer of soil or dirt, pel- lets of which they appear to be to the on- looker. The tarsi are mo- nodactylous in the larva, tri- dactylous in the perfect insect. The present species is of a violet brown colour, like the lees of wine. It
. Economic entomology. Beneficial insects; Insect pests; Thysanura. 220 ARACHNOIDEA, CASE heavy body, rendered still more unseemly by the filth with which XIII. ^ ' , , ' they cover themselves, upsets them at every- step they take when they walk on a flat surface. Their larvae are like the perfect insect, only softer and whiter, and they are always covered by a layer of soil or dirt, pel- lets of which they appear to be to the on- looker. The tarsi are mo- nodactylous in the larva, tri- dactylous in the perfect insect. The present species is of a violet brown colour, like the lees of wine. It is common everywhere near Paris, but is difficult to detect on account of its earthy cover- ing, which, moreover, it is difficult to remove from its back, on account of its lateral spines being interlaced and mixed up with Larva of Notlirus spini^er. _ Claw of Notbnis spinip^er. O">.ooo8o in length. Copied from Nicoljt. Copied from Nicolet's fitjure. IJo. 18. NOTHRUS HORRIDUS {Hemi.).—18. Magnified sketch of perfect insect, copied from M. Nicolet's 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 Murray, Andrew, 1812-1878. [London] Chapman and Hall
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha
