Insect life; an introduction to nature-study and a guide for teachers, students, and others interested in out-of-door life . Neuroptera. Mecoptera. Trichoptera. Lepidoptera. Diptera. Siphonaptera. Coleoptera. Hymenoptera. Physopoda. Order Thysanura (Thys-a-nura).Bristletaiis, Springtails, Fish-moths, and others. The members of this order are wingless insects zvliichundergo no metamorphosis, the larval form being retainedhy the adult. The mandibles and max-illcs are retracted zvithin the cavity ofthe head, so that only their tips arevisible ; they have, however, some free-dom of motion, and can
Insect life; an introduction to nature-study and a guide for teachers, students, and others interested in out-of-door life . Neuroptera. Mecoptera. Trichoptera. Lepidoptera. Diptera. Siphonaptera. Coleoptera. Hymenoptera. Physopoda. Order Thysanura (Thys-a-nura).Bristletaiis, Springtails, Fish-moths, and others. The members of this order are wingless insects zvliichundergo no metamorphosis, the larval form being retainedhy the adult. The mandibles and max-illcs are retracted zvithin the cavity ofthe head, so that only their tips arevisible ; they have, however, some free-dom of motion, and can be used forbiting and cheiving soft compound eyes are rarely prescjit ;but in some genera there is a group ofsimple eyes on each side of the abdomen is sometimes furnishedwith rudimoitary legs. A familiar example of this orderis the fish-moth (Fig. 33), whichoften does damage to starched cloth-ing, bookbindings, and sometimesloosens wall paper by eating outthe paste. The hair line at theleft of the figure indicates the length of the insect. The fish-moth is one of the bristletaiis, which are. 64 INSECT LIFE. SO called on account of the bristles at the hind end of the body. Fig. 34 represents one of the springtails. In these insects there is a ^^^T^¥ taillike organ, which is bent ^^^ ^|^^tt|^ under the insect when it is J^^m^^^^^lk. ^^ ^^^^ ^^^ ^y vv^hich it can jHBH^^^^^E leap several feet. Spring- y^V^^^^^HHBg- tails are abundant in damp ^ places, among decaying veg- FiG. 34. A springtail. • , , ^ & & etation ; but they are com-monly overlooked on account of their minute size. The name Thysanura is from two Greek words:thysanos, a tassel, and oura, the tail. Order Ephemerida (Eph-e-meri-da).The May-flies. The members of this order have delicate membranouswings zvith a fine network ofveins ; the fore wings are largeand the hind wings are muchsmaller, or wanting. The mouth-parts are riidimentary. Themet morphosis is incomplete. The name of this order
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomol, bookyear1901
