![]() With an apical knob-like enlargement.Ĭastes. A rounded swelling: applied especially to swollen regions at the front or back of the thorax.Ĭapitate. Flanges on venter of head, on each side of the first segment of the labium in Heteroptera.Ĭallus. Two-pronged, or divided into two branches or parts.īuccula (pl. Cuticular chamber immediately internal to spiracle.Īxillary sclerites. Consisting of segments united by joints.Ītrial chamber. In adult Odonata, an arch-shaped vein connecting radius and median near base of wing, forming an elongate triangle between them.Īrticulate. insects which have never developed wings during their evolutionary history) in modern classifications this includes the Thysanura, but not Collembola, Diplura, and Protura which are no longer considered insects, but are termed Hexapods instead.Īrculus. Any member of the Apterygota -primitively wingless insects (i.e. ![]() Any limb or other organ, such as an antenna, which is attached to the body by a jointĪpterygote. An elongate projection from the exoskeleton, either internally or externally.Īppendage. An exoskeletal pit and evidence of an internal apophysis.Īpophysis. Pair of segmented appendages located on the head and usually sensory in function - the 'feelers'.Īpophysial pits. Formed in ring-like segments or with ring-like markings.Īntenna (pl., Antennae). Pertaining to last abdominal segment which bears the anus.Īnnulate. Able to live both on land and in water.Īnal. Intermittent organ in most insects, formed from a subdivision of the primary phallic lobes.Īmphibious. Not native and not fully established locally or temporarily naturalizedĪedeagus. The hindmost of the three main body divisions of an insect.Īdventive. Snakefly male ( Agulla sp.), photo by Werner Eigelsreiterįrom The Insect Families of British ColumbiaĪbdomen.
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