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The Wings of Insects: An Exposition of the Uniform Terminology of the Wing ...
John Henry Comstock
No preview available - 2018
accessory veins adult anal area anal vein appears arise basal trachea base bears become branches cell CHAPTER characteristic closely coalescence comparatively conclusion condition costal course cross-veins Cu₁ cubito-anal cubitus described designated determine discussion distance distinct evident examined example exists extends fact Figure fold fore wing forked front furrow genera given greatly hind wing homologies Hymenoptera illustrating important indicated insects known later Lepidoptera less lines longitudinal M₁ M₁+2 M₂ margin medial trachea method modification nearly Needham nymph Odonata portion position posterior preceded present preserved primitive type principal probable pupa R₁ R₂ radial sector radius reduction regarding remains represented result separate short shown side similar single specialization species stem structure subcosta taken termed tion trachea transverse two-branched typical unbranched usually vein Cu₂ venation wing-veins