Lecture 4Outline of previous lectureI. Body planII. HeadIII. Eyesa. Simpleb. CompoundIV. Grasshopper mouthpartsV. Insect antennaeVI. ThoraxVII. LegsVIII. WingsOutline of current lectureI. OrientationII. FunctionIII. FeaturesIV. AdaptationsCurrent lectureOrientation of mouthpartsHypognathous-Pointed downwardsthysanura, cockroaches, mantide, beetlesPrognathous-face anterior to bodyearwigs, beetles, neuroptera, termites, antsOpisthognathous-towards the backhamipteraInsect mouthpartsMandibulateChewing (primitive)HaustellatePiercing/suckingFeed on plants and bloodProbing/sippingFeed on nectarSponging/lappingMouthpart function (chewing)LabrumAnteriorMandiblesCapture foodMaxillary palpsSensory organsLabiumLower lipLibial palpsHypopharynxTongueCommon features of haustellate (sucking) mouthpartsPresence of a sucking tubeCreate negative pressure at base of tube-allows for suckingPresence of sucking pumpFood canal and salivary duct create “over and under double barrel shotgun”Allows for injection into preyMouthpart adaptationsLabium covers all other mouth partsMandible and maxillary are thin and longCutting implements of mosquitoHypotharynxHouse flies cause secondary infectionsFeed after horse flies on open woundsButterflies/mothsEvolved from waspsReduced maxillary, labrumGaleae-flexible curled tubeFuse to form food canalENTO 208 1st EditionLecture 4  Outline of previous lecture I. Body plan II. Head III. Eyes a. Simple b. Compound IV. Grasshopper mouthparts V. Insect antennae VI. Thorax VII. Legs VIII. Wings  Outline of current lecture I. Orientation II. Function III. FeaturesIV. Adaptations  Current lecture  Orientation of mouthparts - Hypognathous-Pointed downwards o thysanura, cockroaches, mantide, beetles - Prognathous-face anterior to body o earwigs, beetles, neuroptera, termites, ants - Opisthognathous-towards the back These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o hamiptera Insect mouthparts - Mandibulate o Chewing (primitive)- Haustellate o Piercing/sucking  Feed on plants and blood o Probing/sipping  Feed on nectar o Sponging/lapping  Mouthpart function (chewing)- Labrumo Anterior - Mandibles o Capture food - Maxillary palps o Sensory organs - Labium o Lower lipo Libial palps - Hypopharynx o Tongue  Common features of haustellate (sucking) mouthparts - Presence of a sucking tube o Create negative pressure at base of tube-allows for sucking - Presence of sucking pump - Food canal and salivary duct create “over and under double barrel shotgun” o Allows for injection into prey  Mouthpart adaptations- Labium covers all other mouth parts - Mandible and maxillary are thin and long o Cutting implements of mosquito - Hypotharynx House flies cause secondary infections- Feed after horse flies on open wounds  Butterflies/moths- Evolved from wasps - Reduced maxillary, labrum- Galeae-flexible curled tube o Fuse to form food