British Insects a Familiar Description of the Form Structure Habits And Tra
British Insects a Familiar Description of the Form Structure Habits And Tra
E F Staveley
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Distinguished by the form of the lip (labium), which is trifid in the Sawflies, simple in the Wood-borers. The tibia of the fore-leg in the Sawflies has two spurs, in the Wood-borers one. These insects vary also in the form and proportion of the Labium of Sawfly Trichiosoma. , thorax. Division I. THE SAWFLIES. The Sawfly, or Ten- thredo* (Pl. VL, fig. 1) is amongst the most easily recog- nised of insects, its form and general appearance readily distinguishing it from all other insects except it...s allies the Woodborers. From these, as has been said above, it may at once be known by the two spurs on the fore leg, a character the more useful as it does not entail the necessity of dissection, and is available in either sex. The body of the Sawfly is of nearly equal width throughout, the head usually, but not always, rather narrower than the thorax. The thorax and abdomen are nearly equal in width, and the sides of the abdomen * The name Tenthredo is used because it is familiar as having formerly been that of nearly the whole family.
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