. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). I'YPE TRACHE AT A. 489 lit or larval imbers, form julturist, the 11^ at times cl by the at- liavJug the ?he most au- the auteiiijiv \y following e prothorax, ;wo bearing , while pos- icallj of ten the juuetion w stalk. In gments falls osterior seg- the thorax, horacic seg- ose associa- gmeut. head. TJie greatly in :^ng sloiuh'!' hairs. The 88 aU(l two for biting, u is that in J(l that may to be con- the}' occnr. ted toothed tid arc ))i()- as thev aio other ha ml I ^ tW
. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). I'YPE TRACHE AT A. 489 lit or larval imbers, form julturist, the 11^ at times cl by the at- liavJug the ?he most au- the auteiiijiv \y following e prothorax, ;wo bearing , while pos- icallj of ten the juuetion w stalk. In gments falls osterior seg- the thorax, horacic seg- ose associa- gmeut. head. TJie greatly in :^ng sloiuh'!' hairs. The 88 aU(l two for biting, u is that in J(l that may to be con- the}' occnr. ted toothed tid arc ))i()- as thev aio other ha ml I ^ tW f*" >•'/'> tVf Ui t r t ; t' • •, •oars on its lates in one. or two unsegmented plates of which the innermost is usually toothed. The second maxill* (Fig. 225, A) are also jointed and are fused together to form a lower lip, or laUum. The fused basal joints form the sKbmentum {sm), the second joints the mentum (m), which bears, as does the stipes of the maxillcTO, a jointed pal}) (p) and terminates frequently in two uujointed plate-like processes. The three pairs of appendages of the thorax are typically ambulatory, but are niodilied for clasping, swimming, digging, etc., according to the habits of the insect. They typically con- ^. sist of a basal joint, the coxa ^^"" 225.—Moutii-paiits op a Bkr- •succeeded by one or two small ''"^f ^''7/'"""«««- ... ,, "^ , A = labium, joints, the trochanter, upon B = miuilla. which follow a femur, a tibia, C = miiudible. and a tarsus, the last consisting of five (occasionally four) short joints, the terminal one bear- ii:g two claws or ungues. Abdominal appendages are ropre- sented only by cerci, which are usually many-jointed structures occurring near the posterior end of the body in many groups of lusecta (Fig. 23G), and by the pairs of spurlike processes which occur on a number of the al)dominal segments of the Thysanura and which recall the spurs on the trunk-segments of Scolo
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1896
