. Insect life; an introduction to nature study and a guide for teachers, students and others interested in out-of-door life. Entomology; Nature study. 68 INSECT LIFE. queens, also occur. A mature, egg-laying queen is presumably present in each nest; but this form of our common species has not yet been found. Fig. 42 represents an egg-laying queen of an African species. The name of this order is from two Greek words: isos, equal, and pteron, a wing. It refers to the fact that the two pairs of wings are similar in form and structure. Order Corrodentia (Cor-ro-den'ti-a). The Psocids {Psoc'ids) an
. Insect life; an introduction to nature study and a guide for teachers, students and others interested in out-of-door life. Entomology; Nature study. 68 INSECT LIFE. queens, also occur. A mature, egg-laying queen is presumably present in each nest; but this form of our common species has not yet been found. Fig. 42 represents an egg-laying queen of an African species. The name of this order is from two Greek words: isos, equal, and pteron, a wing. It refers to the fact that the two pairs of wings are similar in form and structure. Order Corrodentia (Cor-ro-den'ti-a). The Psocids {Psoc'ids) and. the Book-lice. The winged members oj this order have four hranous wings, with the veins , but with com- paratively few cross-veins; the fore wings are larger than the hind wings ; and both pairs when not in use are placed rooflike over the body, being almost vertical, and not folded in plaits. The mouth-parts are formed for biting. The metamorphosis is incomplete. The winged members of this order feed upon lichens 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. Tj,^ '^ . * .. The most fig. 44.—a book- FIG. pSOCld. ^„3^ laminar 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 walls of 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. New York, D. Appleton and Company
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