Insect life; an introduction to nature-study and a guide for teachers, students, and others interested in out-of-door life . n African name of this order is from two Greek words:isos, equal, and ptcron, a wingf. It refers to the factthat the twostructure. pairs of wings are similar in form and Order Corrodentia (Cor-ro-denti-a).jyic Psocids i^Psocids) and the Book-lice. The ivingcd members of this order have four mem-branous tvings, with the veins prominent, but tvith com-paratively fezu cross-veins; the fore ivings are largerthan the hind wings ; and both pairs zvhen not in use ar
Insect life; an introduction to nature-study and a guide for teachers, students, and others interested in out-of-door life . n African name of this order is from two Greek words:isos, equal, and ptcron, a wingf. It refers to the factthat the twostructure. pairs of wings are similar in form and Order Corrodentia (Cor-ro-denti-a).jyic Psocids i^Psocids) and the Book-lice. The ivingcd members of this order have four mem-branous tvings, with the veins prominent, but tvith com-paratively fezu cross-veins; the fore ivings are largerthan the hind wings ; and both pairs zvhen not in use areplaced rooflike over the body, being almost vertical, andnot folded in plaits. The mouth-parts are formed forbiting. The nietamorpJiosis is incomplete. The winged members of this order feed uponlichens and are found on the trunks of trees and on fences ; they often occur in swarms. Fig. 43 represents a common form with its wings spread. The most familiar repre-sentative of the wingless forms is the book-louse(Fig. 44). This is a minute insect which occurs be-tween the leaves of old books and on papered wallsof
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomol, bookyear1901
