昆虫形态学 Insect morphology 第二章昆虫的头部和颈部 Chapter 2 Head and Cervix (Neck) 五、口器(mouthparts) 片上干
为什么口器是附肢演化来的? ■解剖形态学证据 a)典型的昆虫口器( hewing Mouth与结合 纲、唇足纲头部附肢结构最相似; b)典型的昆虫口器几乎发生于所有原始的 昆虫目中,如直翅目蝗虫等类群;其他 类型的口器均由咀嚼式口器衍化而来
Mouthparts口器 Formed from appendages of head segments a Forms or Styles of feeding apparatus 由 brm上唇, mandibles( paired)上颚, maxillae( paired)下颚 lbim下唇,and 舌 五部分组成
Mouthparts 口器
antenna labrum chewing- solid food compound ey 1Sucking-fluid food audible piercing and sucking maxilla 刺吸式 maxilla oning虹吸式 palps Sponging舔吸式 labium( Rasping-sucking 锉 吸式 Grasping -sucking 捕吸式 labium b 2001 Brooks/Cole
Typical mouthpart Chewing mouthparts咀嚼式口器 → 沟 个 上
咀嚼式
Labrum -1 Upper lip Ocelli Labium -1 Maxilla Lower lip Labium Mandible brum Molar area Mandibles -2 Jaws Labrum Maxilla -2 Cardo 2nd Jaws Stipes Mentum Hypopharynx Hypopharynx Lacinia Tongue like Paraglossa ABIUM AXILLA
Mouth parts Labium Labrum –1 Upper lip Labium – 1 Lower lip Mandibles – 2 Jaws Maxilla – 2 2nd Jaws Hypopharynx – 1 Tongue like
凸颚 臼 上唇 轴节→ ↓ 下十 茎节 中 颚外 下颚须 下侵
咀嚼式口器 Chewing mouthparts 由五部分组成: )上唇1 abru epipharynx 头节1的附肢,内侧有内唇。 Compound e Mandible Labrum Lab ium Maxime Labial palp
2)上颚 mandible, or jaw paired appendages of segment4.头节4的一对附肢。 sclerotized, usually articulations with the subgena. HE 化,与颊下区相联。 In herbivorous forms there are both cutting edges(Eu Pt 的切齿叶 incisor lot) and grinding surfaces(后端的白 If molar lobe) on the mandible SAP 区 切区 2
3)下颚 maxillae Maxillae are the paired appendages of segment 5 Cd adcd a It consists of 5 parts 轴节ardo(基部一节) St adst 节 stipes(下颚中央,相当于 pp- 基肢节) 外颚叶 galea(较大,有很多感觉 器官) A Ga 内颚叶 acela(有齿) 下颚须 maxillary palpus(pl. palps or P palp)(有感觉作用,5节,相当于 端肢节)